WO2023103687A1

WO2023103687A1 - Radio frequency front-end device, radio frequency transceiving system, and communication device

Info

Publication number: WO2023103687A1
Application number: PCT/CN2022/130653
Authority: WO
Inventors: 王国龙
Original assignee: Oppo广东移动通信有限公司
Priority date: 2021-12-07
Filing date: 2022-11-08
Publication date: 2023-06-15
Also published as: CN114039614B; CN114039614A

Abstract

The present application discloses a radio frequency front-end device, a radio frequency transceiving system, and communication device, which are used for a main antenna radio frequency link, such that a non-independent networking mode can be supported without an external multi-mode multi-frequency power amplifier device, thus the integration level is improved, and the occupied mainboard area is reduced. In addition, due to the improvement of the integration level of the device, the cost is also reduced. Further, by means of integration, wiring related to power supply and transmission control is reduced, the complexity of the single-board layout is reduced, and the performance of a radio frequency transceiving system and communication device is improved.

Description

RF front-end devices, RF transceiver systems and communication equipment

technical field

This application relates to but not limited to radio frequency technology, especially a radio frequency front-end device, radio frequency transceiver system and communication equipment.

Background technique

With the development and progress of technology, 5G mobile communication technology has gradually begun to be applied to electronic devices. With the increase of communication network standards, terminal equipment must support communication requirements under various network standards of 2G, 3G, 4G, and 5G; limited by the size constraints of terminal equipment, the space of the motherboard PCB has not been increased due to the increase in demand. A substantial increase, which will lead to very tight space layout and wiring of the motherboard PCB.

In order to support ENDC, an additional multimode multiband power amplifier (MMPA, Multimode Multiband Power Amplifier Module) device is required, which will undoubtedly make the problem of space layout and wiring very tight, and also increase the complexity of PCB layout and wiring. , increasing the cost. Among them, ENDC is the abbreviation of EUTRA NR Dual-Connectivity, E stands for E-UTRA, which belongs to the air interface of 3GPP LTE, and is the eighth version of 3GPP; N stands for N radio 5G; D stands for LTE and 5G dual connection. ENDC can be understood as the mutual compatibility of 4G and 5G dual connections.

Summary of the invention

The embodiment of the present application provides a radio frequency front-end device (the first radio frequency front-end device), which is used for the radio frequency link of the main antenna, and is provided with a first intermediate frequency transmission port and an intermediate frequency auxiliary transmission port; the radio frequency front-end device includes:

The first transmitting circuit is connected to the first intermediate frequency transmitting port and the intermediate frequency auxiliary transmitting port, and is used to perform power amplification processing on the first intermediate frequency signal from the first intermediate frequency transmitting port and output it through the intermediate frequency auxiliary transmitting port;

Wherein, the first intermediate frequency band signal is a signal of one of the preset intermediate frequency bands in the non-independent networking mode;

The radio frequency front-end device is also provided with a second intermediate frequency transmitting port, at least two receiving ports, a first antenna port and at least two auxiliary receiving ports; wherein, the intermediate frequency auxiliary transmitting port and an auxiliary receiving port are connected to an external circuit connection; a second antenna port is also provided; the radio frequency front-end device also includes:

A first switch circuit, a plurality of second ports of the first switch circuit are respectively connected to the second transmitting circuit and the first receiving circuit, a first port of the first switch circuit is connected to the first antenna port, and is used for selectively conducting the first antenna port Two radio frequency paths between the transmitting circuit and the first receiving circuit and the first antenna port; a first port of the first switch circuit is connected to the second antenna port;

The second transmitting circuit is connected to the second intermediate frequency transmitting port, and is used to amplify and process the second intermediate frequency band signal among the plurality of intermediate frequency band signals from the second intermediate frequency transmitting port and output it to the first antenna port, and to output the signal from the second intermediate frequency band to the first antenna port performing amplifying processing on a plurality of intermediate frequency band signals other than the second intermediate frequency band signal at the second intermediate frequency transmitting port and outputting them to the first antenna port or the second antenna port;

The first receiving circuit is connected with the receiving port, the auxiliary receiving port and the second transmitting circuit, and is used for amplifying and processing the first intermediate frequency signal received from the auxiliary receiving port connected to the external circuit and outputting it to a The receiving port is configured to amplify the main set MIMO signal of the second intermediate frequency band signal from an auxiliary receiving port and output it to a receiving port, and to amplify at least the second intermediate frequency band signal among the plurality of intermediate frequency band signals from the radio frequency path process and output to a receiving port;

Wherein, the second intermediate frequency band signal is another preset intermediate frequency band signal in the non-independent networking mode;

The radio frequency front-end device is a radio frequency MHB L-PA Mid device.

An embodiment of the present application provides a radio frequency transceiver system (first radio frequency transceiver system), including: a first antenna, a second antenna, a third antenna, a fourth antenna, a radio frequency transceiver, an external circuit, a second combiner, a second Four combiners, the first filter, the second filter and the third filter, the LFEM device and the first radio frequency front-end device described in the above item; wherein,

The radio frequency transceiver is connected to the first antenna via the first radio frequency front-end device, and constitutes a transmission channel of an intermediate frequency band signal including at least the second intermediate frequency band signal and a main set receiving channel of the intermediate frequency band signal including at least the second intermediate frequency band signal;

The radio frequency transceiver is connected to the second antenna through the first radio frequency front-end device, the external circuit, the first filter and the second combiner to form the transmission channel of the first intermediate frequency band signal and the main receiving channel of the first intermediate frequency band signal, And the main set MIMO receiving channel of the second intermediate frequency band signal;

The radio frequency transceiver is connected to the third antenna via the LFEM device to form a diversity receiving channel of the intermediate frequency band signal including at least the second intermediate frequency band signal;

The radio frequency transceiver is connected to the fourth antenna through the LFEM device, the second filter, the third filter and the fourth combiner to form a diversity receiving channel of the first intermediate frequency band signal and a diversity MIMO receiving channel of the second intermediate frequency band signal ;

Wherein, the first intermediate frequency band signal and the second intermediate frequency band signal are signals of two different preset intermediate frequency bands in the non-independent networking mode.

An embodiment of the present application provides a communication device, including the radio frequency transceiver system described in any one of the foregoing.

The first radio frequency front-end device provided by the embodiment of the present application is used for the radio frequency link of the main set antenna, and no longer needs to be connected with an external multi-mode multi-frequency power amplifier device to support the non-independent networking mode, which reduces the occupied area of the PCB and improves the radio frequency The integration of the device reduces the cost, and after the integration, the power supply, transmission control and other wiring are reduced, and the complexity of the board layout is reduced, thereby improving the performance of the radio frequency transceiver system and communication equipment.

The embodiment of the present application also provides a radio frequency front-end device (second radio frequency front-end device), which is used for the radio frequency link of the main set antenna, and is provided with a first intermediate frequency transmission port, at least one reception port, at least one auxiliary reception port, and intermediate frequency auxiliary transceiver port, intermediate frequency auxiliary receiving port; wherein, the intermediate frequency auxiliary receiving port is connected with an auxiliary receiving port through a radio frequency line; the radio frequency front-end device includes:

The first transmitting circuit is connected to the first intermediate frequency transmitting port and the switching circuit, and is used to amplify the first intermediate frequency band signal from the first intermediate frequency transmitting port and output it from the intermediate frequency auxiliary transceiver port through the switching circuit;

The switching circuit is connected with the first transmitting circuit, the intermediate frequency auxiliary transceiving port, and the intermediate frequency auxiliary receiving port, and is used to separate the transmitting and receiving paths according to the transmitting and receiving signal direction of the first intermediate frequency band signal to realize single-antenna two-way communication;

The first receiving circuit is connected with the receiving port and the auxiliary receiving port, and is used to amplify the first intermediate frequency band signal received through the intermediate frequency auxiliary receiving port from the auxiliary receiving port connected to the intermediate frequency auxiliary receiving port and output it to a receiving circuit. port;

The radio frequency front-end device, wherein the auxiliary receiving port includes at least two; the radio frequency front-end device is also provided with a second intermediate frequency transmission port and a first antenna port; a second antenna port is also provided; the radio frequency front-end device Also includes:

A first switch circuit, a plurality of second ports of the first switch circuit are respectively connected to the second transmitting circuit and the first receiving circuit, a first port of the first switch circuit is connected to the first antenna port, and is used to select and guide Connect the radio frequency path between the second transmitting circuit and the first receiving circuit and the first antenna port; a first port of the first switch circuit is connected to the second antenna port;

The first receiving circuit is also connected to the second transmitting circuit, and is also used to amplify and process at least a second intermediate frequency band signal from among a plurality of intermediate frequency band signals from the radio frequency path and output it to a receiving port, for amplifying the main MIMO signal of the second intermediate frequency band signal at the auxiliary receiving port and outputting it to one of the receiving ports;

The radio frequency front-end device is a radio frequency MHB L-PA Mid device.

The embodiment of the present application also provides a radio frequency transceiver system (second radio frequency transceiver system), including: a first antenna, a second antenna, a third antenna, a fourth antenna, a radio frequency transceiver, a second combiner, a fourth combiner circuit device, the first filter, the second filter and the third filter, the LFEM device and the second radio frequency front-end device described in any one of the above; wherein,

The radio frequency transceiver is connected to the first antenna through the second radio frequency front-end device, and constitutes at least the transmission channel of the intermediate frequency band signal including the second intermediate frequency band signal and the main receiving channel of the intermediate frequency band signal including at least the second intermediate frequency band signal;

The radio frequency transceiver is connected to the second antenna through the second radio frequency front-end device, the first filter and the second combiner to form the transmission channel of the first intermediate frequency band signal, the main receiving channel of the first intermediate frequency band signal, and at least the second The main MIMO receiving channel of the second medium frequency band signal;

An embodiment of the present application further provides a communication device, including the radio frequency transceiver system described in any one of the foregoing.

The second radio frequency front-end device provided by the embodiment of the present application is used for the radio frequency link of the main set antenna, and no longer needs to be connected with an external multi-mode multi-frequency power amplifier device and a preset frequency band duplexer to support the non-independent networking mode, reducing the The area occupied by the PCB improves the integration of RF devices and reduces the cost. After integration, the wiring of power supply and transmission control is reduced, and the complexity of single board layout is reduced, thereby improving the performance of the RF transceiver system and communication equipment. .

The embodiment of the present application further provides a radio frequency front-end device (the third radio frequency front-end device), which is used for the radio frequency link of the main antenna, and is provided with a first intermediate frequency transmission port, at least one reception port, and an intermediate frequency auxiliary transceiver port; the radio frequency front end Devices include:

The switching circuit is connected to the first transmitting circuit, the intermediate frequency auxiliary transceiver port, and the first receiving circuit, and is used to separate the transmitting and receiving paths according to the transmitting and receiving signal direction of the first intermediate frequency band signal to realize single-antenna two-way communication;

The first receiving circuit is connected to the receiving port and the switching circuit, and is used to amplify the first intermediate frequency signal received through the intermediate frequency auxiliary transceiver port of the switching circuit and output it to a receiving port;

The radio frequency front-end device is also provided with a second intermediate frequency transmission port, a first antenna port, and at least one auxiliary receiving port; a second antenna port is also provided; the radio frequency front-end device also includes:

A first switch circuit, a plurality of second ports of the first switch circuit are respectively connected to the second transmitting circuit and the first receiving circuit, a first port of the first switch circuit is connected to the first antenna port, and is used for selectively conducting the first antenna port. Two radio frequency paths between the transmitting circuit and the first receiving circuit and the first antenna port; a first port of the first switch circuit is connected to the second antenna port;

The first receiving circuit is also connected to the second transmitting circuit, and is also used to amplify and process at least the second intermediate frequency band signal among the plurality of intermediate frequency band signals from the radio frequency channel and output it to another receiving port, Amplifying and processing the main MIMO signal of the second intermediate frequency band signal at the auxiliary receiving port and outputting it to one of the receiving ports;

The radio frequency front-end device is a radio frequency MHB L-PA Mid device.

The embodiment of the present application further provides a radio frequency transceiver system (third radio frequency transceiver system), including: a first antenna, a second antenna, a third antenna, a fourth antenna, a radio frequency transceiver, a second combiner, a fourth combiner circuit device, the first filter, the second filter and the third filter, the LFEM device and the third radio frequency front-end device described in any one of the above; wherein,

The radio frequency transceiver is connected to the first antenna through the third radio frequency front-end device, and constitutes at least the transmission channel of the intermediate frequency band signal including the second intermediate frequency band signal and the main receiving channel of the intermediate frequency band signal including at least the second intermediate frequency band signal;

The radio frequency transceiver is connected to the second antenna through the third radio frequency front-end device, the first filter and the second combiner to form the transmission channel of the first intermediate frequency band signal, the main receiving channel of the first intermediate frequency band signal, and the second The main set MIMO receiving channel of the mid-band signal;

An embodiment of the present application further provides a communication device, including the third radio frequency transceiver system described in any one of the foregoing.

The third radio frequency front-end device provided by the embodiment of the present application is used for the radio frequency link of the main antenna, and no longer needs to be connected with an external multi-mode multi-frequency power amplifier device and a preset frequency band duplexer to support the non-independent networking mode, reducing the The area occupied by the PCB improves the integration of radio frequency devices and reduces the cost. After the integration, the wiring of power supply and transmission control is reduced, and the complexity of single board wiring layout is further reduced, thereby improving the efficiency of the radio frequency transceiver system and communication. device performance.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

Figure overview

The accompanying drawings are used to provide a further understanding of the technical solution of the present application, and constitute a part of the specification, and are used together with the embodiments of the present application to explain the technical solution of the present application, and do not constitute a limitation to the technical solution of the present application.

FIG. 1 is a schematic structural diagram of a first embodiment of a first radio frequency front-end device in an embodiment of the present application;

FIG. 2 is a schematic structural diagram of a second embodiment of the first radio frequency front-end device in the embodiment of the present application;

3 is a schematic structural diagram of a third embodiment of the first radio frequency front-end device in the embodiment of the present application;

Fig. 4 is the structural representation of the first radio frequency MHB L-PA Mid device in the embodiment of the present application;

5 is a schematic structural diagram of the first embodiment of the first radio frequency transceiver system in the embodiment of the present application;

FIG. 6 is a schematic structural diagram of a second embodiment of the first radio frequency transceiver system in the embodiment of the present application;

7 is a schematic structural diagram of the first embodiment of the second radio frequency front-end device in the embodiment of the present application;

FIG. 8 is a schematic structural diagram of a second embodiment of a second radio frequency front-end device in the embodiment of the present application;

9 is a schematic structural diagram of a third embodiment of a second radio frequency front-end device in the embodiment of the present application;

Fig. 10 is the structural representation of the second radio frequency MHB L-PA Mid device in the embodiment of the present application;

FIG. 11 is a schematic structural diagram of the first embodiment of the second radio frequency transceiver system in the embodiment of the present application;

FIG. 12 is a schematic structural diagram of the second embodiment of the second radio frequency transceiver system in the embodiment of the present application;

FIG. 13 is a schematic structural diagram of the first embodiment of the third radio frequency front-end device in the embodiment of the present application;

FIG. 14 is a schematic structural diagram of a second embodiment of a third radio frequency front-end device in an embodiment of the present application;

FIG. 15 is a schematic structural diagram of a third embodiment of a third radio frequency front-end device in an embodiment of the present application;

Fig. 16 is the structural representation of the 3rd radio frequency MHB L-PA Mid device in the embodiment of the present application;

FIG. 17 is a schematic structural diagram of the first embodiment of the third radio frequency transceiver system in the embodiment of the present application;

Fig. 18 is a schematic structural diagram of the second embodiment of the third radio frequency transceiver system in the embodiment of the present application.

detail

In order to make the purpose, technical solution and advantages of the application clearer, the embodiments of the application will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined arbitrarily with each other.

In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the application are given in the drawings. However, the present application can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of this application more thorough and comprehensive.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs. The terms used herein in the specification of the application are only for the purpose of describing specific embodiments, and are not intended to limit the application.

It can be understood that the terms "first" and "second" used in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of indicated technical features. Thus, the features defined as "first" and "second" may explicitly or implicitly include at least one of these features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

It can be understood that "connection" in the following embodiments should be understood as "electrical connection", "communication connection", etc. if the connected circuits, modules, units, etc. have the transmission of electrical signals or data between each other.

When used herein, the singular forms "a", "an" and "the/the" may also include the plural forms unless the context clearly dictates otherwise. It should also be understood that the terms "comprising/comprising" or "having" etc. specify the presence of stated features, integers, steps, operations, components, parts or combinations thereof, but do not exclude the presence or addition of one or more The possibility of other features, integers, steps, operations, components, parts or combinations thereof. Meanwhile, the term "and/or" used in this specification includes any and all combinations of the related listed items.

The non-standalone networking (NSA, non-Standalone) mode may include any of the following architectures: EN-DC, NE-DC, NGEN-DC, and so on. Among them, DC stands for Dual Connectivity, that is, dual connection; E stands for E-UTRA, that is, 4G wireless access network; N stands for NR, that is, 5G new wireless; NG stands for next-generation core network, that is, 5G core network.

Under the EN-DC architecture, the core network is the 4G core network, the 4G base station is the main station, and the 5G base station is the auxiliary station. EN-DC refers to the dual connection between the 4G wireless access network and the 5G NR; under the NE-DC architecture, the core The network is the 5G core network, the 5G base station is the main station, and the 4G base station is the auxiliary station. NE-DC refers to the dual connection between 5G NR and 4G wireless access network; under the NGEN-DC architecture, the core network is the 5G core network, and the 4G base station NGEN-DC refers to the dual connection between 4G wireless access network and 5G NR under the 5G core network.

For convenience of description, the non-standalone networking mode in the embodiment of the present application is described by taking the EN-DC architecture as an example.

Figure 1 is a schematic structural diagram of the first embodiment of the first radio frequency front-end device in the embodiment of the present application, which is used for the main antenna radio frequency link. As shown in Figure 1, the first radio frequency front-end device is at least provided with a first intermediate frequency transmission port MB RFIN1, intermediate frequency auxiliary transmission port MB TX OUT; the first RF front-end device includes at least:

The first transmitting circuit 110 is connected with the first intermediate frequency transmitting port MB RFIN1 and the intermediate frequency auxiliary transmitting port MB TX OUT, and is used to perform power amplification processing on the first intermediate frequency band signal from the first intermediate frequency transmitting port MB RFIN1 and transmit through the intermediate frequency auxiliary transmission Port MB TX OUT output;

Wherein, the first intermediate frequency band signal is a signal of one of preset intermediate frequency bands in the non-independent networking mode.

In an exemplary example, the first radio frequency front-end device is also provided with a second intermediate frequency transmitting port MB RFIN2, at least two receiving ports LNA OUT, a first antenna port ANT1 and at least two auxiliary receiving ports LNA IN; wherein, the intermediate frequency Both the auxiliary transmitting port MB TX OUT and an auxiliary receiving port LNA IN are connected to external circuits; the RF front-end device shown in Figure 1 also includes:

The first switch circuit 130, a plurality of second ports of the first switch circuit 130 are respectively connected to the second transmitting circuit 120 and the first receiving circuit 140, a first port of the first switch circuit 130 is connected to the first antenna port ANT1, For selectively conducting the radio frequency paths between the second transmitting circuit 120 and the first receiving circuit 140 and the first antenna port ANT1 respectively;

The second transmitting circuit 120 is connected to the second intermediate frequency transmitting port MB RFIN2, and is used to amplify at least the second intermediate frequency band signal in the plurality of intermediate frequency band signals from the second intermediate frequency transmitting port MB RFIN2;

The first receiving circuit 140 is connected with the receiving port LNA OUT, the auxiliary receiving port LNA IN and the second transmitting circuit 120, and is used to amplify the received first intermediate frequency band signal from the auxiliary receiving port LNA IN connected with the external circuit Process and output to a receiving port LNA OUT, amplify the main set MIMO signal of the second intermediate frequency band signal from an auxiliary receiving port LNA IN and output it to a receiving port LNA OUT, and amplify and process multiple intermediate frequency band signals from the radio frequency path At least the second intermediate frequency band signal in the frequency band signal is amplified and output to a receiving port LNA OUT;

Wherein, the second intermediate frequency band signal is another preset intermediate frequency band signal in the non-independent networking mode.

In an exemplary embodiment, the second transmitting circuit 120 is connected to a plurality of second ports of the first switch circuit 130 in one-to-one correspondence, and is also used to divide the second intermediate frequency band signal from the second intermediate frequency transmitting port MB RFIN2 A plurality of intermediate frequency band signals other than amplifying and outputting to the first switch circuit 130; the first receiving circuit 140 is also connected to a plurality of second ports of the first switch circuit 130 in one-to-one correspondence, for receiving signals from the first Multiple intermediate frequency band signals of the switch circuit 130 are amplified and output to the receiving port LNA OUT.

The first radio frequency front-end device provided by the embodiment shown in FIG. 1 of the present application supports reception and transmission of intermediate frequency band signals of multiple different frequency bands and supports non-independent networking mode. The multiple intermediate frequency band signals may include intermediate frequency band signals of different frequency bands in the 4G signal, the 5G NR signal, or the 6G signal. Exemplarily, the frequency bands of the multiple intermediate frequency band signals include at least B1, B25, B34, B66, B39 and N3 frequency bands, and a preset first intermediate frequency band and a preset second intermediate frequency band. In one embodiment, the preset first intermediate frequency band may include but not limited to one of the following: frequency bands such as B3 and B1, and correspondingly, the preset second intermediate frequency band may include but not limited to one of the following: N1, N3, etc. band. In one embodiment, the preset first intermediate frequency band may include but not limited to one of the following: N1, N3 and other frequency bands. Correspondingly, the preset second intermediate frequency band may include but not limited to one of the following: B3, B1, etc. band.

The first radio frequency front-end device shown in Figure 1 can be understood as package structure, as shown in Figure 1, in one embodiment, the first radio frequency front-end device is provided with and is used to connect the first intermediate frequency transmission port MB RFIN1 of radio frequency transceiver, The second intermediate frequency transmitting port MB RFIN2 and at least two receiving ports LNA OUT are used to connect the first antenna port ANT1 of the antenna, and the intermediate frequency auxiliary transmitting port MB TX OUT and at least two auxiliary receiving ports LNA IN. Among them, the receiving port LNA OUT, the first intermediate frequency transmitting port MB RFIN1, the second intermediate frequency transmitting port MB RFIN2, the first antenna port ANT1, the intermediate frequency auxiliary transmitting port MB TX OUT and the auxiliary receiving port LNA IN can be understood as the first RF front-end device The RF pin terminals are used to connect with various external devices. In one embodiment, the receiving port LNA OUT, the first intermediate frequency transmitting port MB RFIN1 and the second intermediate frequency transmitting port MB RFIN2 can be used to be connected to the radio frequency transceiver; the first antenna port ANT1 can be used to be connected to the antenna, and the A plurality of intermediate frequency band signals including the second intermediate frequency band signal processed by the first radio frequency front-end device are output to the antenna, and each intermediate frequency band signal including the second intermediate frequency band signal received by the antenna can be transmitted to the first radio frequency front end device ; An intermediate frequency auxiliary transmitting port MB TX OUT and an auxiliary receiving port LNA IN are both connected to an external circuit to realize the transmission and reception of the first intermediate frequency band signal.

In an exemplary example, the external circuit is a switching circuit, and the switching circuit is respectively connected to the intermediate frequency auxiliary transmitting port MB TX OUT, an auxiliary receiving port LNA IN and the antenna. In an embodiment, the switching circuit may be a first intermediate frequency band duplexer, wherein the preset first intermediate frequency band is a frequency band where the first intermediate frequency band signal is located. The first mid-band duplexer is a three-port radio frequency device, which is used to divide the antenna's transmit and receive signals into two different signal paths according to their directions, so as to realize single-antenna two-way communication. In the embodiment of the present application, the transceiving signal is a first intermediate frequency band signal of a preset first intermediate frequency band.

In an exemplary example, one of the output ports of the preset first intermediate frequency band duplexer is connected to the intermediate frequency auxiliary transmission port MB TX OUT for outputting the first intermediate frequency band signal; the first intermediate frequency band duplexer is preset The other output port is connected to an auxiliary receiving port LNA IN for receiving the first intermediate frequency band signal; the common port of the preset first intermediate frequency band duplexer is connected to the antenna for receiving or transmitting the first intermediate frequency band signal. The filtering and isolation of the transmitting signal of the preset first intermediate frequency band and the receiving signal of the preset first intermediate frequency band are realized through the preset first intermediate frequency band duplexer.

In an exemplary example, as shown in FIG. 1 , the first radio frequency front-end device may include: a first transmitting circuit 110 , a second transmitting circuit 120 , a first receiving circuit 140 and a first switching circuit 130 .

In an exemplary example, as shown in FIG. 1, the input end of the first transmitting circuit 110 is connected to the first intermediate frequency transmitting port MB RFIN1, and the first intermediate frequency band signal received by the first intermediate frequency transmitting port MB RFIN1 is amplified. ; The output terminal of the first transmitting circuit 110 is connected with the intermediate frequency auxiliary transmitting port MB TX OUT, and the amplified first intermediate frequency band signal is output from the intermediate frequency auxiliary transmitting port MB TX OUT. The first transmission circuit 110 is provided with a transmission path to support the transmission of the first intermediate frequency band signal. Exemplarily, the frequency band corresponding to the first intermediate frequency band signal may include, for example, the B3 or B1 frequency band, or may be the N1 or N3 frequency band. In one embodiment, the first transmission path may include: a first intermediate frequency transmission port MB RFIN1, a first transmission circuit 110, an intermediate frequency auxiliary transmission port MB TX OUT, an external circuit (such as a preset first intermediate frequency band duplexer) , Antenna jointly constitute the transmission path.

In an exemplary example, as shown in FIG. 1, the input end of the second transmitting circuit 120 is connected to the second intermediate frequency transmitting port MB RFIN2, and the second intermediate frequency transmitting port MB RFIN2 receives multiple signals including the second intermediate frequency band signal. An intermediate frequency band signal is amplified; the output end of the second transmitting circuit 120 includes: a plurality of output ports connected to a plurality of second ends of the first switch circuit 130 in one-to-one correspondence, and a plurality of output ports connected with the plurality of second ends of the first receiving circuit 140 The input ports correspond to multiple output ports connected one by one.

In an exemplary example, the first radio frequency front-end device shown in FIG. 1 is further provided with a second antenna port ANT2 connected to another first port of the first switch circuit 130 . In one embodiment, the second transmitting circuit 120 can amplify a plurality of intermediate frequency band signals received by the second intermediate frequency transmitting port MBRFIN2, wherein the second intermediate frequency band signal in the plurality of intermediate frequency band signals is amplified Then output to the first switch circuit 130. In an embodiment, the second transmitting circuit 120 may be provided with multiple transmitting paths to support the transmission of multiple mid-band signals. Exemplarily, the frequency bands corresponding to the multiple intermediate frequency band signals may include at least frequency bands such as B1/N1, B3/N3, B66, B25, B34, and B39. Exemplarily, the frequency band corresponding to the second intermediate frequency band signal may include, for example, the N1 or N3 frequency band, or may include, for example, the B3 or B1 frequency band. In one embodiment, the second transmission path may include: a transmission path jointly formed by the second intermediate frequency transmission port MBRFIN2, the second transmission circuit 120, the first switch circuit 130, the first antenna port ANT1 or the second antenna port ANT2 .

In an exemplary example, as shown in FIG. 1 , the first receiving circuit 140 is respectively connected to the first switch circuit 130, the second transmitting circuit 120, the receiving port LNA OUT and the auxiliary receiving port LNA IN. The output end of the first receiving circuit 140 is connected to the receiving port LNA OUT. The input end of the first receiving circuit 140 includes: a plurality of input ports connected one-to-one with a plurality of second ends of the first switch circuit 130, at least two auxiliary receiving ports LNA IN, and multiple connections with the second transmitting circuit 120 Each output port is connected to multiple input ports one by one. The first receiving circuit 140 is to the radio frequency signal that comprises the second intermediate frequency band signal from a plurality of input ports, the first intermediate frequency band signal from the auxiliary receiving port LNA IN connected with the external circuit, the second intermediate frequency band signal from another auxiliary receiving port The main MIMO signal of the frequency band signal is respectively amplified and output to the receiving port LNA OUT.

The first receiving circuit 140 in this embodiment supports receiving control of any of the above-mentioned mid-band signals. In an embodiment, the first receiving circuit 140 may be provided with multiple receiving channels to support the reception of multiple mid-band signals. In one embodiment, the receiving path may include: a receiving path jointly formed by the first antenna port ANT1, the first switch circuit 130, the first receiving circuit 140, any receiving port LNA OUT, and the first antenna port ANT1, the first A switch circuit 130, the second transmitting circuit 120, the first receiving circuit 140, and any receiving port LNA OUT jointly constitute a receiving channel, and the auxiliary receiving port LNA IN, the first receiving circuit 140, and any receiving port LNA OUT jointly constitute receiving path. That is, a receiving path may be set for the intermediate frequency band signal of each frequency band, so as to support the receiving and processing of multiple intermediate frequency band signals.

The first radio frequency front-end device shown in Figure 1 of the present application is used for the radio frequency link of the main set antenna, and no longer needs to be connected with an external multi-mode multi-frequency power amplifier device to support the non-independent networking mode, which reduces the PCB footprint and improves the The integration of radio frequency devices reduces the cost, and after the integration, the power supply, transmission control and other wiring are reduced, and the complexity of the single board layout is reduced, thereby improving the performance of the radio frequency transceiver system and communication equipment.

Fig. 2 is the structural representation of the second embodiment of the first radio frequency front-end device in the embodiment of the present application, as shown in Fig. 2, in a kind of exemplary example, the first radio frequency front-end device is also provided with high-frequency transmitting port HB RFIN, 2G high-frequency transmission port 2G HB IN, and high-frequency auxiliary transmission port HB TX OUT connected to external devices, multiple auxiliary transceiver ports TRX (such as TRX1, TRX2 and TRX3), the first radio frequency front-end device can also include: the third The transmitting circuit 160 and the second switching circuit 170 .

In an exemplary embodiment, the input end of the third transmitting circuit 160 is connected to the high-frequency transmitting port HBRFIN, and the multiple output ports of the third transmitting circuit 160 are connected to multiple second terminals of the first switch circuit 130. An output port of three transmitting circuits 160 is connected with the high-frequency auxiliary transmitting port HB TX OUT, and a plurality of output ports of the third transmitting circuit 160 is connected with a plurality of input ports of the first receiving circuit 140, and the third transmitting circuit 160 is used for pairing The received high-frequency signals are amplified; among them, the high-frequency signals are 4G signals and 5G signals. Exemplarily, the multiple high-frequency signals may include signals in frequency bands such as B7, B40, and B41.

In an exemplary example, the first end of the second switch circuit 170 is connected to a second end of the first switch circuit 130, and the multiple second ports of the second switch circuit 170 are respectively connected to multiple auxiliary transceiver ports TRX and The 2G high-frequency transmitting port is connected to 2G HB IN; an auxiliary transceiver port TRX is connected to a second port of the first switch circuit 130.

In one embodiment, the preset first intermediate frequency band in the embodiment of the present application may be the B3 frequency band, and correspondingly, the preset second intermediate frequency band may be replaced by the second high frequency band, that is, a high frequency band signal such as the N41 frequency band, At this time, the sending and receiving of the high frequency band signal will be realized through the third transmitting circuit, the first switching circuit and the first receiving circuit. The specific implementation is easy to understand and will not be described in detail here.

Figure 3 is a schematic structural diagram of the third embodiment of the first radio frequency front-end device in the embodiment of the present application, as shown in Figure 3, in an illustrative example, the first radio frequency front-end device in the embodiment of the present application is also provided with a coupling The output port CPLOUT2 and the coupling input port CPLIN2, the first radio frequency front-end device also includes a coupling circuit 183, which is arranged in the radio frequency path between the first transmitting circuit 110 and the intermediate frequency auxiliary transmission port MB TX OUT, for coupling the intermediate frequency in the radio frequency path The frequency band signal is used to output the coupled signal through the coupled output port CPLOUT2. Wherein, the coupling signal can be used to measure the forward coupling power and reverse coupling power of the mid-band signal. The coupling input port CPLIN2 can be used to connect with other external RF front-end devices with coupling output ports, and is used to receive the coupling signal output by other external RF front-end devices, and the received coupling signal is coupled to the RF front-end device to which the coupling input port CPLIN2 belongs. The output port CPLOUT2 is output to realize the transmission of other externally coupled signals.

As shown in Figure 3, the first radio frequency front-end device in the embodiment of the present application is also provided with a coupling output port CPLOUT1 and a coupling input port CPLIN1, and the first radio frequency front-end device in the embodiment of the present application also includes a first coupling unit 181, a first Two coupling units 182 and a coupling switch 184 . Wherein, the first coupling unit 181 can be coupled in the radio frequency path between the first switch circuit 130 and the first antenna port ANT1, for coupling the radio frequency signal in the radio frequency path, so as to output the first A coupled signal. Wherein, the first coupling signal can be used to measure the forward coupling power and reverse coupling power of the radio frequency signal. The second coupling unit 182 can be coupled in the radio frequency path between the first switch circuit 130 and the second antenna port ANT2, and is used to couple the radio frequency signal in the radio frequency path to output the second coupled signal through the coupling port of the second coupling unit 182. Signal. Wherein, the second coupling signal can be used to measure the forward coupling power and reverse coupling power of the radio frequency signal.

Wherein, the first coupling unit 181 and the second coupling unit 182 have the same structure. Taking the first coupling unit 181 as an example, the first coupling unit 181 includes an input terminal, an output terminal and a coupling terminal. Wherein, the input end of the first coupling unit 181 is connected to the first switch circuit 130, the output end of the first coupling unit 181 is connected to the first antenna port ANT1, and the coupling end is used for coupling the intermediate frequency signal received by the input end and outputting the first antenna port ANT1. A coupled signal, wherein the first coupled signal includes a first forward coupled signal and a first reverse coupled signal. Wherein, based on the first forward coupling signal output by the coupling end, the forward power information of the intermediate frequency signal can be detected; based on the first reverse coupling signal output by the coupling end, the reverse power information of the intermediate frequency signal can be detected correspondingly, and This detection mode is defined as a reverse power detection mode.

The coupling switch 184 is respectively connected to the coupling end of the first coupling unit 181 , the coupling end of the second coupling unit 182 and the coupling output port CPLOUT1 for selectively outputting the first coupling signal or the second coupling signal to the coupling output port CPLOUT1 . That is to say, the coupling switch 184 is used to switch between the detection mode of the first coupling signal and the detection mode of the second coupling signal. The coupling input port CPLIN1 can be used to connect with other external RF front-end devices with a coupling output port CPLOUT, and is used to receive coupling signals output by other external RF front-end devices, and pass the received coupling signal through the RF front-end device to which the coupling input port CPLIN1 belongs The coupling output port CPLOUT1 outputs to realize the transmission of other external coupling signals.

The embodiment of the present application provides that the first radio frequency front-end device is a radio frequency L-PA Mid device. The RF L-PA Mid device can be understood as a power amplifier module with a built-in low noise amplifier (L-PA Mid Power Amplifier Modules including Duplexers WithLNA). The radio frequency L-PA Mid device can support the reception and transmission of intermediate frequency signals and high frequency signals in different frequency bands, and realize the switching control of receiving and switching between multiple intermediate frequency signals, the switching control of transmitting and the switching control between transmitting and receiving , and realize the receiving switching control, transmitting switching control, and switching control between transmitting and receiving among multiple high-frequency signals, and support non-independent networking mode. The multiple medium and high frequency signals may include medium and high frequency signals of different frequency bands in 4G signals and 5GNR signals. Specifically, the frequency bands of the multiple intermediate frequency signals may include frequency bands B1, B3, B25, B34, B66, B39, N1, and N3. The frequency bands of the plurality of high frequency signals may include B30, B7, B40, B41, N7 and N41. Therefore, the radio frequency L-PA Mid device in the embodiment of the present application can also be called a medium and high frequency power amplifier module with a built-in low noise amplifier (MHB L-PA Mid, Middle and High Band PAMid With LNA).

Fig. 4 is the structural representation of the embodiment of the first radio frequency MHB L-PA Mid device in the embodiment of the present application, as shown in Fig. 4, in one embodiment, the first radio frequency MHB L-PA Mid device is provided with for and radio frequency The first intermediate frequency transmitting port MB RFIN1 connected to the transceiver, the second intermediate frequency transmitting port MB RFIN2, at least two receiving ports LNA OUT, the intermediate frequency auxiliary transmitting port MB TX OUT for connecting with external circuits, and the second intermediate frequency transmitting port MB TX OUT for connecting with the antenna An antenna port ANT1, and at least two auxiliary receiving ports LNA IN. Among them, the receiving port LNA OUT, the first IF transmitting port MB RFIN1, the second IF transmitting port MB RFIN2, the IF auxiliary transmitting port MB TX OUT, the first antenna port ANT1, and the auxiliary receiving port LNA IN can be understood as radio frequency LB L-PA The RF pin terminal of the Mid device is used to connect with various external devices. In one embodiment, the receiving port LNA OUT, the first intermediate frequency transmitting port MB RFIN1, and the second intermediate frequency transmitting port MB RFIN2 can be used for connecting with the radio frequency transceiver; the first antenna port ANT1 can be used for connecting with the antenna, and the Multiple intermediate frequency band signals including the second intermediate frequency band signal processed by the radio frequency MHB L-PA Mid device are output to the antenna, and each intermediate frequency band signal including the second intermediate frequency band signal received by the antenna can be transmitted to the radio frequency MHB L-PA Mid PA Mid device; the intermediate frequency auxiliary transmitting port MB TX OUT and an auxiliary receiving port LNA IN are all connected to an external circuit 10 to realize the transmission and reception of the first intermediate frequency band signal, and the external circuit 10 can be used for preset The first intermediate frequency band transmit signal and the first intermediate frequency band received signal of the first intermediate frequency band are filtered and isolated to ensure normal operation of reception and transmission.

In an exemplary example, as shown in FIG. 4, the first transmitting circuit 110 may at least include: a first intermediate frequency power amplifier 111, the input end of the first intermediate frequency power amplifier 111 is connected to the first intermediate frequency transmitting port MB RFIN1, and the first intermediate frequency power amplifier 111 is connected to the first intermediate frequency transmitting port MB RFIN1. An output terminal of an intermediate frequency power amplifier 111 is connected to the intermediate frequency auxiliary transmission port MB TX OUT, and is used for performing power amplification processing on the first intermediate frequency band signal received through the first intermediate frequency transmission port MB RFIN1. In an embodiment, the first intermediate frequency band signal includes a B3 or B1 frequency band signal. In one embodiment, the first transmit path may include: a first intermediate frequency transmit port MB RFIN1, a first intermediate frequency power amplifier 111, an intermediate frequency auxiliary transmit port MB TX OUT, an external circuit 10 (such as a preset first intermediate frequency band duplex Device) and antenna together constitute the transmission path.

In the embodiment of the present application, by integrating the first intermediate frequency power amplifier 111 in the first radio frequency MHB L-PA Mid device, it is no longer necessary to add an external multi-mode multi-frequency power amplifier device, which reduces the PCB footprint and improves the integration of radio frequency devices The cost is reduced, and after integration, the power supply, transmission control and other wiring are reduced, and the complexity of the board layout is reduced, thereby improving the performance of the radio frequency transceiver system and communication equipment.

In an exemplary embodiment, as shown in FIG. 4 , the first radio frequency MHB L-PA Mid device is further provided with a second antenna port ANT2, which is connected to a first port of the first switch circuit 130. The second transmitting circuit 120 can at least comprise: the second intermediate frequency power amplifier 121, the second switch unit 122; Wherein, the input end of the second intermediate frequency power amplifier 121 is connected with the second intermediate frequency transmitting port MB RFIN2, the second intermediate frequency power amplifier 121 The output end is connected with a first port of the second switch unit 122, and is used to carry out power amplification processing to a plurality of intermediate frequency band signals comprising the second intermediate frequency band signal received through the second intermediate frequency transmitting port MBRFIN2, and the second switch unit 122 The multiple second ports of the first switch circuit 130 are correspondingly connected to the multiple second ports of the first switch circuit 130, and the second intermediate frequency band signal amplified by the second intermediate frequency power amplifier 121 is output to the first antenna port, and the second intermediate frequency band signal is output to the first antenna port through the second intermediate frequency power amplifier 121. The intermediate frequency power amplifier 121 amplifies and processes the multiple intermediate frequency signals except the second intermediate frequency signal and outputs them to the first antenna port or the second antenna port. The plurality of first ports of the second switch unit 122 are correspondingly connected to the first receiving circuit 140 for outputting a plurality of intermediate frequency band signals from the first switching circuit 130 to the first receiving circuit 140 . In one embodiment, the second transmitting circuit 120 may further include: a plurality of first filter units 1131 and a plurality of second filter units 1132, and the plurality of second ports of the second switch unit 122 are passed through the first filter unit 1131 respectively. Or the second filter unit 1132 is connected to the first switch circuit 130, and is used to filter the multiple intermediate frequency signals including the second intermediate frequency signal after being amplified by the second intermediate frequency power amplifier 121 and output them to the first switch circuit 130. In one embodiment, the second port of the second switch unit 122 connected to one end of the first filter unit 1131 or the second filter unit 1132 may include five, corresponding to B1/N1, B3/N3/B66, B25, B234, B39 frequency bands. In an embodiment, the second intermediate frequency band signal includes a signal of an N1 or N3 frequency band. In one embodiment, the second transmission path may include: a second intermediate frequency transmission port MBRFIN2, a second intermediate frequency power amplifier 121, a second switch unit 122, a first filter unit 1131 or a second filter unit 1132, a first switch The transmission path jointly constituted by the circuit 130, the first antenna port ANT1 or the second antenna port ANT2.

In an exemplary example, the first receiving circuit 140 may include: at least three low-noise amplifiers 143, at least one third switch unit 142, and a fourth switch unit 144; wherein,

The input terminal of a low noise amplifier 143 (the low noise amplifier LNA1 in the embodiment shown in FIG. 4 ) is connected to the first switch unit 142 of a third switch unit 142 (the third switch unit SP3T#1 in the embodiment shown in FIG. 4 ). One port is connected, a second port of the third switch unit SP3T#1 is connected to the first switch circuit 130, the output end of the low noise amplifier LNA1 is connected to a second port of the fourth switch unit 144, and the low noise amplifier LNA1 is used for The second intermediate frequency band signal is amplified and output to a receiving port LNA OUT (receiving port LNA OUT1 in the embodiment shown in Figure 4) through the fourth switch unit 144;

The input end of a low noise amplifier 143 (the low noise amplifier LNA6 in the embodiment shown in Figure 4) is connected with the auxiliary receiving port LNA IN of the external circuit 10 (the auxiliary receiving port LNA IN6 in the embodiment shown in Figure 4 ) connection, the output end of the low noise amplifier LNA6 is connected to a second end of the fourth switch unit 144, and is used to amplify the received first intermediate frequency signal and output it to another receiving port through the fourth switch unit 144 LNA OUT (receiving port LNA OUT6 in the embodiment as shown in Figure 4);

The input end of a low noise amplifier 143 (low noise amplifier LNA5 in the embodiment as shown in Figure 4) is connected with described with an auxiliary receiving port LNA IN (the auxiliary receiving port LNA IN5 in the embodiment as shown in Figure 4) , the output end of the low noise amplifier LNA5 is connected to a second port of the fourth switch unit 144, and is used to amplify the main set MIMO signal of the second intermediate frequency band signal and then output it to another through the fourth switch unit 144. A receiving port LNA OUT (the receiving port LNA OUT5 in the embodiment shown in Figure 4).

In an exemplary example, the first ports of the third switch unit 142 are respectively connected to the input terminals of some low-noise amplifiers 143, and the second port of the third switch unit 142 may be connected to the first switch circuit 130 or to the Auxiliary receive port LNA IN connection. Taking the third switch unit SP3T#1 as an example, the first port of the third switch unit SP3T#1 is connected to the input terminal of the low noise amplifier LNA1, and among the second ports of the third switch unit SP3T#1, two second ports It is connected with the first switch circuit 130, and a second port is connected with the auxiliary receiving port LNA IN1.

In an exemplary example, the first receiving circuit 140 may further include a plurality of fifth switching units 141 and a plurality of third filtering units 1133 . Wherein, the input terminal of the third filter unit 1133 can be connected to the first switch circuit 130 correspondingly, and the output terminal of the third filter unit 1133 can be connected to a second port of the third switch unit 142 or the fifth switch unit 141 correspondingly, using For filtering the received mid-band signal, the mid-band signal output by the third filtering unit 1133 has different frequency bands.

In an exemplary example, the first port of the fifth switch unit 141 may be respectively connected to the input terminals of some low-noise amplifiers 143, and the second port of the fifth switch unit 143 may be connected to the first switch circuit 130, or With the auxiliary receiving port LNA IN, the output of the low noise amplifier 143 (low noise amplifiers LNA2, LNA3, LNA4 and LNA5 in the embodiment shown in FIG. 4 ) is connected to a second port of the fourth switch unit 144. Taking the fifth switch unit SP4T#1 as an example, the first port of the fifth switch unit SP4T#1 is connected to the input end of the low noise amplifier LNA2, and among the second ports of the fifth switch unit SP4T#1, three ports are connected to the first port of the fifth switch unit SP4T#1. A switch circuit 130 is connected, and one port is connected with the auxiliary receiving port LNA IN2.

It should be noted that, in the embodiment of the present application, the first filtering unit 1131 , the second filtering unit 1132 , and the third filtering unit 1133 are not further limited, and may be set according to actual needs.

In one embodiment, the receiving path may include: the first antenna port ANT1 or the second antenna port ANT1, the first switch circuit 130, the third switch unit 142 or the fifth switch unit 141, the low noise amplifier 143, the fourth switch Unit 144, a receiving path jointly formed by any receiving port LNA OUT, and an intermediate frequency auxiliary transmitting port MB TX OUT, an external circuit 10 (such as a first intermediate frequency band duplexer preset for the first intermediate frequency band), auxiliary receiving Port LNA IN, low-noise amplifier 143, fourth switch unit 144, another receiving path jointly formed by any receiving port LNA OUT, and other external circuits (not shown in the figure), third switch unit 142, low Another receiving path jointly formed by the noise amplifier 143, the fourth switch unit 144, and any receiving port LNA OUT.

In an exemplary example, as shown in FIG. 4 , the first switch circuit 130 includes a first switch unit 131 . In one embodiment, the first switch unit 131 may be a multi-channel selection switch 131 such as DP7T. A first port of the first switch unit 131 is connected to the first antenna port ANT1, and the other first port is connected to the second antenna port ANT2; part of the second ports of the first switch unit 131 are respectively connected to a plurality of first filter units 1131 , multiple second filtering units 1132, and multiple third filters 1133 are connected. In an illustrative example, the radio frequency MHB L-PA Mid device is also provided with a high-frequency transmission port HB RFIN, a 2G high-frequency transmission port 2G HB IN, and a high-frequency auxiliary transmission port HB TX OUT connected to an external switching circuit, multiple An auxiliary transceiver port TRX, the radio frequency MHB L-PA Mid device also includes a third transmitting circuit 160 and a second switching circuit 170. In an exemplary embodiment, the third transmitting circuit 160 may be composed of a power amplifier and a switch unit.

In an exemplary example, the input end of the third transmitting circuit 160 is connected to the high-frequency transmitting port HBRFIN, and the multiple output ports of the third transmitting circuit 160 are connected to multiple second ports of the first switch circuit 130, and the first An output port of three transmitting circuits 160 is connected with the high-frequency auxiliary transmitting port HB TX OUT, and a plurality of output ports of the third transmitting circuit 160 is connected with a plurality of input ports of the first receiving circuit 140, and the third transmitting circuit 160 is used for pairing The received high-frequency signal is amplified; wherein, the high-frequency signal is a 4G signal and a 5G signal. Exemplarily, the multiple high-frequency signals may include signals in frequency bands such as B7, B40, and B41.

In an exemplary example, the second switch circuit 170 may include a seventh switch unit 171 such as SP3T, a first port of the seventh switch unit 171 is connected to a second port of the first switch circuit 130, and the seventh switch unit 171 The second port is connected to multiple auxiliary transceiver ports TRX and 2G high-frequency transmission port 2G HB IN. An auxiliary transceiver port TRX is connected to a second end of the first switch circuit 130 .

It should be noted that, in the embodiment of the present application, the switch units in the illustrations are only some examples, and are not used to limit the number and types of switches included in the switch unit. The switch units in the embodiment of the present application can be based on It is set by the number of circuits connected to it.

In an illustrative example, the first radio frequency MHB L-PA Mid device is also provided with a coupling output port CPLOUT2, and the radio frequency MHB L-PA Mid device also includes a coupling circuit 183, which is arranged between the first intermediate frequency power amplifier 111 and the intermediate frequency auxiliary transmitting In the radio frequency path between the ports MB TX OUT, it is used to couple the intermediate frequency band signal in the radio frequency path to output the coupled signal through the coupled output port CPLOUT2.

In an exemplary example, the first radio frequency MHB L-PA Mid device is also provided with a coupling output port CPLOUT1, and the radio frequency MHB L-PA Mid device further includes a first coupling unit 181, a second coupling unit 182 and a coupling switch 184. Wherein, the first coupling unit 181 can be coupled in the radio frequency path between the first switch unit 131 and the first antenna port ANT1, for coupling the radio frequency signal in the radio frequency path, so as to output the first A coupling signal; the second coupling unit 182 can be coupled in the radio frequency path between the first switch unit 131 and the second antenna port ANT2, for coupling the radio frequency signal in the radio frequency path to pass through the coupling port of the second coupling unit 172 Output the second coupling signal; the coupling switch 184 is respectively connected to the coupling end of the first coupling unit 181, the coupling end of the second coupling unit 182 and the coupling output port CPLOUT1, for selectively outputting the first coupling signal or the second coupling signal to Coupling output port CPLOUT1.

In an exemplary example, the first radio frequency MHB L-PA Mid device may further include: a first controller 191 and a second controller 192. Wherein, the first controller 191 is respectively connected with each switch unit and each power amplifier in the radio frequency MHB L-PA Mid device, and is used to control the on-off of each switch unit and control the working state of each power amplifier. The second controller 192 can be connected with each low noise amplifier, and is used for adjusting the gain coefficient of each low noise amplifier.

The first controller 191 and the second controller 192 can be mobile industry processor interface (MIPI, Mobile Industry Processor Interface)-radio frequency front end control interface (RFFE, RF Front End Control Interface) control unit or radio frequency front end control interface (RFFE, RF Front End Control Interface) control unit, which conforms to the control protocol of RFFE bus. When the first controller 191 and the second controller 192 are MIPI-RFFE control units or RFFE control units, the radio frequency MHB L-PA Mid device is also provided with an input pin CLK of a clock signal, a single/bidirectional data signal input or Bidirectional pin SDATAS, power supply pin VDD, reference voltage pin VIO, etc., to realize the control of the power amplifier, each switching unit, and low noise amplifier in the RF MHB L-PA Mid device.

Based on the miniaturization development trend of the main board of the terminal equipment, the embodiment of the present application provides the first radio frequency MHB L-PA Mid device, and its composition is shown in FIG. 4 . The whole chip integrates multi-band transmission and reception channels, including B1/N1, B3/N3, B66, B25, B34, B39, B7, B40, B41 and 2G HB GSM, as well as 3 auxiliary transceiver ports TRX and 6 use Auxiliary receiving port LNA IN for external frequency band expansion.

Based on the first radio frequency MHB L-PA Mid device shown in Figure 4, it can support non-independent networking mode. Exemplarily, to realize 4G and 5G dual connectivity, the first intermediate frequency band may be the B3 frequency band, and the second intermediate frequency band may be the EN-DC combination of B3+N1 such as the N1 frequency band as an example.

The transmission path of the B3 frequency band is as follows:

The first intermediate frequency transmitting port MB RFIN1 → the first intermediate frequency power amplifier 111 → the auxiliary intermediate frequency transmitting port MB TX OUT → the first intermediate frequency duplexer 10 → the antenna.

The receiving channel path of the B3 frequency band is as follows:

Antenna→first mid-band duplexer 10→auxiliary receiving port LNA IN6→low noise amplifier LNA6→contact 6 of the fourth switch unit 144→receiving port LNA OUT6→radio frequency transceiver.

The transmission path of the N1 frequency band is as follows:

The second intermediate frequency transmitting port MB RFIN2 → the second intermediate frequency power amplifier 121 → the contact 1 of the second switch unit 122 → the contact 4 of the second switch unit 122 → the first filter unit 1131 → the contact 4 of the first switch unit 131 →Contact 1 of the first switch unit 131 →First antenna port ANT1.

The receiving channel path of the N1 frequency band is as follows:

First antenna port ANT1→contact 1 of the first switch unit 131→contact 4 of the first switch unit 131→third filter unit 1133→a third switch unit 142 (such as SP3T#1)→low noise amplifier LNA1→ Contact 1 of the fourth switch unit 144→receiving port LNA OUT1→radio frequency transceiver.

The first radio frequency MHB L-PA Mid device provided by the embodiment of the present application no longer needs an external multi-mode multi-frequency power amplifier device to support the non-independent networking mode, which reduces the PCB footprint and improves the integration of radio frequency devices. The cost is reduced, and after integration, the power supply, transmission control and other wiring are reduced, and the complexity of the board layout is reduced, thereby improving the performance of the radio frequency transceiver system and communication equipment.

In order to meet the requirements of the 5G MB MIMO function, the embodiment of the present application also provides a radio frequency transceiver system, which uses the first radio frequency MHB L-PA Mid device and the low frequency front end module (LFEM, L Frontend) provided by the embodiment of the present application. Module) implementation. The LFEM device in the embodiment of the present application at least includes: a medium-high frequency antenna port MHB ANT, two auxiliary receiving ports LNA AUX IN, at least three medium-high frequency receiving ports LNA OUT MHB, and corresponding receiving circuits and switch circuits for at least Support diversity reception processing for multiple IF signals. It should be noted that the specific implementation of the LFEM device is not used to limit the protection scope of the present application.

Figure 5 is a schematic structural diagram of the first embodiment of the first radio frequency transceiver system in the embodiment of the present application. As shown in Figure 5, the first radio frequency transceiver system includes at least: a first antenna ANT1, a second antenna ANT2, a third antenna ANT3, The fourth antenna ANT4, the radio frequency transceiver 40, the external circuit 10, the first radio frequency front-end device (such as the first radio frequency MHB L-PA Mid device 50) and the LFEM device 60, the first radio frequency front-end device in any embodiment of the foregoing Figures 1 to 4 The second combiner 82 , the fourth combiner 84 , the first filter 71 , the second filter 72 and the third filter 73 . in,

The radio frequency transceiver 40 is connected with the first antenna ANT1 through the radio frequency MHB L-PA Mid device 50, and constitutes at least the transmission channel of the intermediate frequency band signal comprising the second intermediate frequency band signal and the main set of the intermediate frequency band signal comprising at least the second intermediate frequency band signal receiving channel;

The radio frequency transceiver 40 is connected with the second antenna ANT2 through the radio frequency MHB L-PA Mid device 50, the external circuit 10, the first filter 71 and the second combiner 82, and constitutes the transmission channel of the first intermediate frequency band signal, the first intermediate frequency The main set receiving channel of the frequency band signal, and the main set MIMO receiving channel of the second mid-band signal;

The radio frequency transceiver 40 is connected to the third antenna ANT3 via the LFEM device 60 to form a diversity receiving channel of an intermediate frequency band signal including at least a second intermediate frequency band signal;

The radio frequency transceiver 40 is connected with the fourth antenna ANT4 through the LFEM device 60, the second filter 72, the third filter 73 and the fourth combiner 84 to form a diversity receiving channel of the first intermediate frequency band signal, and the second intermediate frequency band Signal diversity MIMO receiving channel;

In an exemplary example, the first mid-band signal is a 4G mid-band signal, and the second mid-band signal is a 5G NR mid-band signal, forming an EN-DC combination. In an embodiment, the first intermediate frequency band is the B3 frequency band, and the second intermediate frequency band is the N1 frequency band. In an embodiment, the first intermediate frequency band is the B1 frequency band, and the second intermediate frequency band is the N3 frequency band.

In one embodiment, the first antenna ANT1 can be used for transmitting and receiving the second mid-band signal, and the first antenna ANT1 is connected to the first antenna port ANT1 of the radio frequency MHB L-PA Mid device 50. The second antenna ANT2 can be used for the transmission and main set reception of the first mid-band signal, and the main set MIMO reception of the second mid-band signal. The second antenna ANT2 is connected to the second end of the second combiner 82, and the second A first port of the combiner 82 is connected with an auxiliary receiving port LNA IN5 of the radio frequency MHB L-PA Mid device 50 through the first filter 71, and is used for the main set MIMO reception of the second intermediate frequency band signal, and the second combiner Another first port of the device 82 is connected with the public port of the external circuit 10, and an output port of the external circuit 10 is connected with the intermediate frequency auxiliary transmitting port MB TX OUT of the radio frequency MHB L-PA Mid device 50 for the first intermediate frequency band signal The other output port of the external circuit 10 is connected with an auxiliary receiving port LNA IN6 of the radio frequency MHB L-PA Mid device 50 for the main set reception of the first intermediate frequency band signal. The third antenna ANT3 can be used to realize the diversity reception of the second intermediate frequency band signal, and the third antenna ANT3 is connected to the medium and high frequency antenna port MHB ANT of the LFEM device 60 . The fourth antenna ANT4 can be used to realize the diversity reception of the first intermediate frequency band signal and the diversity MIMO reception of the second intermediate frequency band signal. The fourth antenna ANT4 is connected to the second end of the fourth combiner 84, and the fourth combiner 84 A first port of the second filter 72 is connected with an auxiliary receiving port LNA AUX IN1 of the LFEM device 60 for diversity MIMO reception of the second intermediate frequency band signal, and another first port of the fourth combiner 84 is passed through The third filter 73 is connected to another auxiliary receiving port LNA AUX IN5 of the LFEM device 60 for diversity reception of the first intermediate frequency band signal. It should be noted that the port in the embodiment is only an example, and is not used to limit the protection scope of the present application.

In an exemplary embodiment, the external circuit 10 is a switching circuit, and the switching circuit is respectively connected to the intermediate frequency auxiliary transmitting port MB TX OUT, an auxiliary receiving port LNA IN6 and the second combiner 82. In an exemplary embodiment, the external circuit 10 is a first mid-band duplexer. In an embodiment, the first mid-band duplexer is a B3 duplexer. In an embodiment, the first mid-band duplexer is a B1 duplexer.

The first radio frequency transceiver system provided by the embodiment of the present application, on the one hand, since the first radio frequency front-end device integrates a multi-mode multi-frequency power amplifier, it no longer needs an external multi-mode multi-frequency power amplifier device to support the non-independent networking mode , reducing the area occupied by the PCB; on the other hand, due to the increase in the integration of RF devices, the cost is reduced; moreover, through integration, the wiring of power supply, transmission control, etc. is reduced, and the complexity of the board layout is reduced. Therefore, the performance of the radio frequency transceiver system is improved.

In an exemplary example, an embodiment of the present application further provides a radio frequency transceiver system. As shown in Figure 5-6, the radio frequency transceiver system may include an antenna group, a radio frequency MHB L-PA Mid device 50, a radio frequency transceiver 40, an LFEM device 60, an external circuit 10, a plurality of filters, a plurality of switch modules and a plurality of Combiner.

Wherein, the antenna group includes a first antenna ANT1 , a second antenna ANT2 , a third antenna ANT3 and a fourth antenna ANT4 . The first antenna ANT1, the second antenna ANT2, the third antenna ANT3 and the fourth antenna ANT4 are antennas capable of supporting 4G frequency band and 5G NR frequency band. In an embodiment, the first antenna ANT1 , the second antenna ANT2 , the third antenna ANT3 and the fourth antenna ANT4 may be directional antennas or non-directional antennas. Exemplarily, the first antenna ANT1 , the second antenna ANT2 , the third antenna ANT3 and the fourth antenna ANT4 may be formed using any suitable type of antennas. For example: the first antenna ANT1, the second antenna ANT2, the third antenna ANT3 and the fourth antenna ANT4 may include antennas with resonant elements formed by the following antenna structures: array antenna structure, loop antenna structure, patch antenna structure, slot antenna structure, at least one of a helical antenna structure, a strip antenna, a monopole antenna, a dipole antenna, and the like. Different types of antennas can be used for frequency band combinations of different RF signals.

The radio frequency MHB L-PA Mid device 50 is used to support the transceiving and processing of radio frequency signals in multiple intermediate frequency bands and supports the non-independent networking mode, at least supporting the transmitting and receiving processing of the first intermediate frequency band signal and the transmitting and receiving processing of the second intermediate frequency band signal , Main set MIMO receiving processing of the second intermediate frequency band signal. Wherein, the radio frequency LB L-PA Mid device 50 may be the first radio frequency MHB L-PA Mid device in any one of the above-mentioned embodiments in Fig. 1 to Fig. 4 . Exemplarily, the frequency bands of multiple intermediate frequency band signals may include at least B1, B3, B25, B34, B66, B39, N1, and N3 frequency bands, wherein the preset first intermediate frequency band may include but not limited to frequency bands such as B3 or B1, The preset second middle frequency band may include but not limited to frequency bands such as N1 or N3.

The LFEM device 60 is at least equipped with a medium-high frequency antenna port MHB ANT, two auxiliary receiving ports LNA AUX IN, at least three medium-high frequency receiving ports LNA OUT MHB, and corresponding receiving circuits and switch circuits, at least for supporting the first Diversity reception processing of the intermediate frequency band signal, diversity reception processing of the second intermediate frequency band signal, and diversity MIMO reception processing of the second intermediate frequency band signal. It should be noted that the specific implementation of the LFEM device 60 is not used to limit the protection scope of the present application.

In the first radio frequency transceiving system shown in Fig. 6, also comprise a radio frequency front-end device for supporting the radio frequency signal of a plurality of low frequency bands to send and receive processing, as shown in Fig. 6, this radio frequency front-end device can be a radio frequency LB PA Mid device. It should be noted that the specific implementation of the radio frequency LB PA Mid device in the embodiment of this application is not intended to limit the scope of protection of this application.

Fig. 6 is a schematic structural diagram of the second embodiment of the first radio frequency transceiver system in the embodiment of the present application. Based on the radio frequency transceiver system shown in Fig. 6 and in combination with Fig. 4 and Fig. 5, the first intermediate frequency band is preset as the B3 frequency band, The second intermediate frequency band is preset as the N1 frequency band as an example to analyze the working principle of the B3+N1 EN-DC as follows.

B3 TX link: the transmission signal (B3 TX1) of the first intermediate frequency band signal is output from the TX1MB port of the radio frequency transceiver 40, through the radio frequency line, to the first intermediate frequency transmission port MB RFIN1 port (of the radio frequency MHB L-PA Mid device 50 Shown as 4G MB RFIN1 in Figure 6); After the signal is amplified by the first intermediate frequency power amplifier 111 (shown as MB 4G PA1 in Figure 6), it is output to the intermediate frequency auxiliary transmission port MB TX OUT port; through Path11, to the external circuit 10 That is, the B3 duplexer Duplexer1 in Figure 6; after the B3 duplexer Duplexer1 filters the B3 TX1, it passes through Path05 to the second combiner 82; after the second combiner 82 combines, through the Path03 path, B3 TX1 passes through The second antenna ANT2 transmits.

B3PRX link: the receiving signal (B3 RX1) of the first intermediate frequency band signal enters from the second antenna ANT2, passes through the Path03 path, to the second combiner 82; after the second combiner 82 is combined, passes through Path05, to the outside Circuit 10 is B3 duplexer Duplexer1 in Fig. 6; after B3 duplexer Duplexer1 filters B3 RX1, to the auxiliary receiving port LNA IN6 of MHB PA Mid device 50 (expressed as LMHB LNA IN2 in Fig. 6); After the noise amplifier 143 is amplified by the LNA6 in Figure 6, it goes to the fourth switch unit 144 as the 6P6T switch in Figure 6; 6P6T switches to the contact 6, and outputs from the receiving port LNA OUT6; B3 RX1 enters the radio frequency transceiver through the SDR PRX3 port device 40.

B3 DRX link: the diversity reception signal (B3 DRX) of the first intermediate frequency band signal enters from the fourth antenna ANT4, passes through Path08 path, to the fourth combiner 84; after the fourth combiner 84 is combined, passes through Path10, To the third filter 73; B3 DRX is filtered by the third filter 73, and then to an auxiliary receiving port LNA AUX IN (shown as LNA AUX HB4 in FIG. 6 ) of the LFEM device 60; the SP3T#3 switch inside the LFEM device 60 Switch the single port to the low-noise amplifier LNA3 channel inside the LFEM device 60; after being amplified by the low-noise amplifier LNA3, it goes to the 6P6T switch inside the LFEM device 60; the 6P6T switch is switched to contact 1, from the medium and high frequency receiving port LNA OUT MHB1 port Output: B3 DRX enters the radio frequency transceiver 40 through the SDR DRX0 port.

N1 TX link: the transmission signal (N1 TX) of the second intermediate frequency band signal is output from the TX0 MB port of the radio frequency transceiver 40, through the radio frequency line, to the second intermediate frequency transmission port MB RFIN2 port of the radio frequency MHB L-PA Mid device 50 (represented as 4G MB RFIN2 in FIG. 6); after the signal is amplified by the second intermediate frequency power amplifier 121 (represented as MB 4G PA2 in FIG. 6), the signal is transferred to the second switch unit 122 such as the 3P5T switch in FIG. 6; the 3P5T switch is switched to Contact 4, after being filtered by N1 TX Filter, goes to the first switch unit 131 (such as the DP7T switch in Figure 6); the DP7T switch is switched to contact 1, and is output from the first antenna port ANT1; via Path02, to the first A combiner 81; after the first combiner 81 is combined, the N1 TX is transmitted from the first antenna ANT1 through Path01.

N1 PRX link: the receiving signal (N1 PRX) of the second intermediate frequency band signal enters from ANT1 on the first day, passes Path01 path, to the first combiner 81; after the first combiner 81 is combined, passes Path02 path, To the first antenna port ANT1 of the MHB PA Mid device 50; the first switch unit 131 (such as the DP7T switch in Figure 6) is switched to the contact 4, after N1 RX filtering, to a third switch of the first receiving circuit 140 Unit 142 (SP3T#1 switch as shown in Figure 6); SP3T#1 switch single port, to a low noise amplifier 143 (LNA1 in the radio frequency MHB L-PA Mid device 50 among Figure 6) path; After the low-noise amplifier LNA1 is amplified, it is sent to the fourth switch unit 144 (such as the 6P6T switch in Figure 6); the 6P6T switch is switched to contact 1, and output to a receiving port LNA OUT (such as the LNA OUT1 in Figure 6); N1 PRX Enter the radio frequency transceiver 40 via the SDR PRX0 port.

N1 DRX link: the diversity reception signal (N1 DRX) of the second intermediate frequency band signal enters from the third antenna ANT3, passes through the Path06 path, and reaches the third combiner 83; after the third combiner 83 is combined, passes through the Path07 path , to the medium and high frequency antenna port MHB ANT of the LFEM device 60; the SP8T switch inside the LFEM device 60 is switched to the contact 5, and after filtering by N1 RX, it goes to the SPDT switch inside the LFEM device 60; the SPDT switch inside the LFEM device 60 is switched to a single Port, to the low-noise amplifier LNA4 channel inside the LFEM device 60; after being amplified by the low-noise amplifier LNA4, to the low-noise amplifier 6P6T switch inside the LFEM device 60; the 6P6T switch is switched to contact 2, to the medium-high frequency receiving port LNA OUT MHB2 Port output; N1 DRX enters the radio frequency transceiver device 40 through the SDR DRX2 port.

N1 PRX MIMO link: the main set MIMO receiving signal (N1 PRX MIMO) of the second intermediate frequency band signal enters from the second antenna ANT2, passes through the Path03 path, and reaches the second combiner 82; after the second combiner 82 is combined , through the Path04 path, to the first filter 71; after the N1 PRX MIMO is filtered by the first filter 71, to an auxiliary receiving port LNA IN5 of the MHB PA Mid device 50 (expressed as LMHB LNA IN1 as shown in Figure 6); After a low noise amplifier 143 (LNA5 as shown in Figure 6) is amplified, to the fourth switch unit 144 (6P6T switch among Figure 6); 6P6T switch switches to contact 5, from a receiving port LNA OUT (such as LNA OUT5) output among Fig. 6; N1 PRX MIMO enters radio frequency transceiver 40 through SDR PRX1 port.

N1 DRX MIMO link: the diversity MIMO reception signal (N1 DRX MIMO) of the second intermediate frequency band signal enters from the fourth antenna ANT4, passes through the Path08 path, and reaches the fourth combiner 84; after the fourth combiner 84 is combined, Through the Path09 path, to the second filter 72; N1 DRX MIMO is filtered by the second filter 72, and then to an auxiliary receiving port LNA AUX IN of the LFEM device 60 (represented as LNA AUX LMB in FIG. 6 ); inside the LFEM device 60 The SP3T#5 switch of the SP3T#5 switch switches the single port to the low-noise amplifier LNA6 channel inside the LFEM device 60; after being amplified by the low-noise amplifier LNA6, it goes to the 6P6T switch inside the LFEM device 60; the 6P6T switch switches to the contact 4 to receive Port LNA OUT MHB4 port output; N1 DRX MIMO enters the radio frequency transceiver 40 through the SDR DRX6 port.

Combined with the analysis of the working principle of the above-mentioned B3+N1EN-DC, the frequency band configuration of each antenna port is shown in Table 1.

Table 1

The first radio frequency transceiver system in this application example supports non-independent networking mode. Taking B3+N1 EN-DC combination as an example, B3 has two channels of receiving PRX and DRX, and N1 has four channels of PRX, DRX, PRX MIMO, and DRX MIMO Receiving; and, in the embodiment of the present application, by integrating the external multi-mode multi-frequency power amplifier device into the first radio frequency front-end device, the area occupied by the PCB is reduced; on the other hand, due to the increased integration of the radio frequency device, the cost; moreover, through integration, the routing of power supply, transmission control, etc. is reduced, and the complexity of single board layout is reduced, thereby improving the performance of the radio frequency transceiver system. The first radio frequency transceiver system in the example of this application also realizes the transmission and reception channels of multiple frequency bands, including B1/N1, B3/N3, B66, B25, B34, B39, B7, B40, B41 and 2G HB GSM, and 3 One auxiliary transceiver port TRX and six auxiliary receiving ports LNA IN for external frequency band expansion expand the communication frequency band of the radio frequency transceiver system and improve the communication performance of the radio frequency transceiver system.

The embodiment of the present application also provides a communication device, the communication device is provided with the first radio frequency transceiver system in the above embodiment, by setting the first radio frequency transceiver system on the communication device, the integration of the external multi-mode multi-frequency power amplifier is realized In the RF front-end device, it supports the non-independent networking mode and improves the integration level, reducing the PCB footprint; and, due to the increase in the integration level of the RF device, the cost is reduced; moreover, through integration, the power supply is reduced. , transmission control and other wiring, which reduces the complexity of the board layout and improves the performance of the communication equipment.

In order to further reduce the area occupied by the PCB, improve the integration of radio frequency devices, and reduce costs, the embodiment of the present application also provides a second radio frequency front-end device. The second radio frequency front-end device integrates an external multi-mode multi-frequency power amplifier device into the radio frequency front-end device. , and also integrate the preset first frequency band duplexer as an external circuit into the RF front-end device, so that the RF front-end device does not need an external multi-mode multi-frequency power amplifier device and the preset first frequency band duplexer can also support Non-independent networking mode, and after integration, it reduces the wiring of power supply and transmission control, reduces the complexity of single board layout, and thus improves the performance of radio frequency transceiver system and communication equipment.

Fig. 7 is a schematic structural diagram of the first embodiment of the second radio frequency front-end device in the embodiment of the present application, which is used for the radio frequency link of the main antenna. As shown in Fig. 7, the second radio frequency front-end device is provided with at least a first intermediate frequency transmission port MB RFIN1, at least one receiving port LNA OUT, at least one auxiliary receiving port LNA IN, intermediate frequency auxiliary receiving port MB INOUT, intermediate frequency auxiliary receiving port MB RX; wherein, the intermediate frequency auxiliary receiving port MB RX is connected to an auxiliary receiving port LNA IN through a radio frequency line ; The radio frequency front-end device at least includes:

The first transmission circuit 110 is connected with the first intermediate frequency transmission port MB RFIN1 and the switching circuit 150, and is used to amplify the first intermediate frequency band signal from the first intermediate frequency transmission port MB RFIN1 and through the switching circuit 150 from the intermediate frequency auxiliary transceiver port MB INOUT output;

The switching circuit 150 is connected with the first transmitting circuit 110, the intermediate frequency auxiliary transceiver port MB INOUT, and the intermediate frequency auxiliary receiving port MB RX, and is used to separate the transmitting and receiving paths according to the transmitting and receiving signal direction of the first intermediate frequency band signal to realize single-antenna two-way communication;

The first receiving circuit 140 is connected with the receiving port LNA OUT and the auxiliary receiving port LNA IN, and is used to receive the first signal from the auxiliary receiving port LNA IN connected to the intermediate frequency auxiliary receiving port MB RX through the intermediate frequency auxiliary receiving port MB INOUT. The mid-band signal is amplified and output to a receiving port LNA OUT;

In an illustrative example, the second RF front-end device is also provided with a second intermediate frequency transmission port MB RFIN2 and the first antenna port ANT1; the second RF front-end device shown in Figure 7 also includes:

The first receiving circuit 140 is also connected with the second transmitting circuit 120, and is also used to amplify and process at least the second intermediate frequency band signal from a plurality of intermediate frequency band signals from the radio frequency path and output it to a receiving port LNA OUT, for the signal from the radio frequency path The main MIMO signal of the second intermediate frequency band signal of another auxiliary receiving port is amplified and output to a receiving port;

In an exemplary example, the switching circuit 150 may be a first intermediate frequency band duplexer, wherein the preset first intermediate frequency band is a frequency band where the first intermediate frequency band signal is located. The first intermediate frequency band duplexer is a three-port radio frequency device, which is used to separate the transmitting and receiving paths according to the direction of the transmitting and receiving signals of the first intermediate frequency band signal. Antenna two-way communication.

In an exemplary example, the common port of the preset first intermediate frequency band duplexer is connected to the intermediate frequency auxiliary transceiver port MB INOUT for transmitting or receiving the first intermediate frequency band signal through the antenna connected to the intermediate frequency auxiliary transceiver port MB INOUT One of the output ports of the preset first intermediate frequency band duplexer is connected to the output end of the first transmitting circuit 110 for outputting the first intermediate frequency band signal; the other output port of the preset first intermediate frequency band duplexer is connected to The intermediate frequency auxiliary receiving port MB RX is connected, and is used to output the first intermediate frequency band signal received through the common port of the preset first intermediate frequency band duplexer. The filtering and isolation of the transmitting signal of the preset first intermediate frequency band and the receiving signal of the preset first intermediate frequency band are realized through the preset first intermediate frequency band duplexer.

The second radio frequency front-end device provided by the embodiment shown in FIG. 7 of the present application supports receiving and transmitting mid-band signals of multiple different frequency bands and supports a non-independent networking mode. The multiple intermediate frequency band signals may include intermediate frequency band signals of different frequency bands in the 4G signal, the 5G NR signal, or the 6G signal. Exemplarily, the frequency bands of the multiple intermediate frequency band signals at least include B1, B25, B34, B66, B39 and N3 frequency bands, and a preset first intermediate frequency band and a preset second intermediate frequency band. In one embodiment, the preset first intermediate frequency band may include but not limited to one of the following: frequency bands such as B3 and B1, and correspondingly, the preset second intermediate frequency band may include but not limited to one of the following: N1, N3, etc. band. In one embodiment, the preset first intermediate frequency band may include but not limited to one of the following: N1, N3 and other frequency bands. Correspondingly, the preset second intermediate frequency band may include but not limited to one of the following: B3, B1, etc. band.

In order to avoid redundant description, only the different parts of the second radio frequency front-end device and the first radio frequency front-end device will be described below, and the same parts will not be repeated.

The second radio frequency front-end device shown in Figure 7 can be understood as a package structure, as shown in Figure 7, the second radio frequency front-end device is provided with the first intermediate frequency transmission port MB RFIN1 and the second intermediate frequency transmission port MB RFIN2 for connecting the radio frequency transceiver , At least two receiving ports LNA OUT, used to connect the first antenna port ANT1 of the antenna, the intermediate frequency auxiliary receiving port MB INOUT, the intermediate frequency auxiliary receiving port MB RX and at least one auxiliary receiving port LNA IN. Among them, the receiving port LNA OUT, the first IF transmitting port MB RFIN1, the second IF transmitting port MB RFIN2, the first antenna port ANT1, the IF auxiliary transceiver port MB INOUT, the IF auxiliary receiving port MB RX and the auxiliary receiving port LNA IN can be understood It is the RF pin terminal of the RF front-end device, which is used to connect with various external devices. In one embodiment, the receiving port LNA OUT, the first intermediate frequency transmitting port MB RFIN1 and the second intermediate frequency transmitting port MB RFIN2 can be used to be connected to the radio frequency transceiver; the first antenna port ANT1 can be used to be connected to the antenna, and the The multiple intermediate frequency band signals including the second intermediate frequency band signal processed by the second radio frequency front-end device are output to the antenna, and the multiple intermediate frequency band signals including the second intermediate frequency band signal received by the antenna can also be transmitted to the second radio frequency front end device; the intermediate frequency auxiliary transceiver port MB INOUT can be used to connect with another antenna, for outputting the first intermediate frequency band signal processed by the second radio frequency front-end device to the antenna, and can also receive and input the first intermediate frequency band received by the antenna The signal is transmitted to the second radio frequency front-end device through the auxiliary receiving port LNA IN connected with the intermediate frequency auxiliary receiving port MB RX, so as to realize the transmission and reception of the first intermediate frequency band signal.

In an exemplary example, as shown in FIG. 7 , the second radio frequency front-end device may include: a first transmitting circuit 110 , a switching circuit 150 , a second transmitting circuit 120 , a first receiving circuit 140 and a first switching circuit 130 .

In an exemplary example, as shown in FIG. 7, the input end of the first transmitting circuit 110 is connected with the first intermediate frequency transmitting port MB RFIN1, and the first intermediate frequency band signal received by the first intermediate frequency transmitting port MB RFIN1 is amplified. The output end of the first transmitting circuit 110 is connected with one of the output ports of the switching circuit 150, and the common port of the switching circuit 150 is connected with the intermediate frequency auxiliary transceiver port MB INOUT, and the first intermediate frequency band signal through the amplifying process passes through the switching circuit 150 from the intermediate frequency Auxiliary transceiver port MB INOUT output. The first transmitting circuit 110 may be provided with a transmitting path to support the transmission of the first intermediate frequency band signal. Exemplarily, the frequency band corresponding to the first intermediate frequency band signal may include, for example, the B3 or B1 frequency band, or may also include, for example, the N1 or N3 frequency band. In an embodiment, the first transmission path may include: a transmission path jointly formed by the first intermediate frequency transmission port MB RFIN1, the first transmission circuit 110, the switching circuit 150, the intermediate frequency auxiliary transceiver port MB INOUT, and the antenna.

In an exemplary example, as shown in FIG. 7 , for the implementation of the second transmitting circuit 120 and the first receiving circuit 140 , reference may be made to the related description in FIG. 1 , which will not be repeated here.

The second radio frequency front-end device shown in Figure 7 of this application is used for the radio frequency link of the main set antenna. It does not need to add multi-mode multi-frequency power amplifier devices and duplexers to support the non-independent networking mode, which reduces the PCB occupation. The area improves the integration of radio frequency devices and reduces the cost. After the integration, the power supply, transmission control and other wiring are reduced, and the complexity of the single board layout is reduced, thereby improving the performance of the radio frequency transceiver system and communication equipment.

FIG. 8 is a schematic structural diagram of the second embodiment of the second radio frequency front-end device in the embodiment of the present application. For specific implementation, refer to FIG. 2 , and details will not be repeated here.

Figure 9 is a schematic structural diagram of the third embodiment of the second radio frequency front-end device in the embodiment of the present application. The specific implementation can be referred to in Figure 3, and will not be repeated here. The difference from the embodiment shown in Figure 3 is that the The coupling circuit 183 in the embodiment is set in the radio frequency path between the switching circuit 150 and the intermediate frequency auxiliary transceiver port MB INOUT.

The embodiment of the present application provides that the second radio frequency front-end device may also be a radio frequency L-PA Mid device. The radio frequency L-PA Mid device can support the reception and transmission of intermediate frequency signals and high frequency signals in different frequency bands, and realize the switching control of receiving and switching between multiple intermediate frequency signals, the switching control of transmitting and the switching control between transmitting and receiving , and realize the receiving switching control, transmitting switching control, and switching control between transmitting and receiving among multiple high-frequency signals, and support non-independent networking mode. The multiple mid- and high-frequency signals may include mid- and high-frequency signals of different frequency bands in the 4G signal and the 5G NR signal. Specifically, the frequency bands of the multiple intermediate frequency signals may include frequency bands B1, B3, B25, B34, B66, B39, N1, and N3. The frequency bands of the plurality of high frequency signals may include B30, B7, B40, B41, N7 and N41. Therefore, the radio frequency L-PA Mid device in the embodiment of the present application can also be called MHB L-PA Mid.

Fig. 10 is the structural representation of the embodiment of the second radio frequency MHB L-PA Mid device in the embodiment of the present application, as shown in Fig. 10, the second radio frequency MHB L-PA Mid device is provided with the first intermediate frequency transmission for connecting the radio frequency transceiver Port MB RFIN1, the second intermediate frequency transmitting port MB RFIN2, at least two receiving ports LNA OUT, the first antenna port ANT1 for connecting the antenna, the intermediate frequency auxiliary transceiver port MB INOUT, and the intermediate frequency auxiliary receiving port MB RX and at least one auxiliary receiving port Port LNA IN. Among them, the receiving port LNA OUT, the first IF transmitting port MB RFIN1, the second IF transmitting port MB RFIN2, the IF auxiliary transceiver port MB INOUT, the IF auxiliary receiving port MB RX, the first antenna port ANT1, and the auxiliary receiving port LNA IN can be understood It is the radio frequency pin terminal of the second radio frequency LB L-PA Mid device, which is used to connect with various external devices. In one embodiment, the receiving port LNA OUT, the first intermediate frequency transmitting port MB RFIN1, and the second intermediate frequency transmitting port MB RFIN2 can be used for connecting with the radio frequency transceiver; the first antenna port ANT1 can be used for connecting with the antenna, and the Multiple intermediate frequency band signals including the second intermediate frequency band signal processed by the second radio frequency MHB L-PA Mid device are output to the antenna, and multiple intermediate frequency band signals including the second intermediate frequency band signal received by the antenna can also be transmitted to the first The second radio frequency MHB L-PA Mid device; the intermediate frequency auxiliary transceiver port MB INOUT can be used to connect with another antenna, and is used to output the first intermediate frequency band signal processed by the second radio frequency MHB L-PA Mid device to the antenna, and also The first intermediate frequency band signal received by the antenna can be transmitted to the second radio frequency MHB L-PA Mid device through the auxiliary receiving port LNA IN connected to the intermediate frequency auxiliary receiving port MBRX, so as to realize the separation and reception of the first intermediate frequency band signal.

In an exemplary example, as shown in Figure 10, the first transmitting circuit 110 may include: a first intermediate frequency power amplifier 111, the input end of the first intermediate frequency power amplifier 111 is connected with the first intermediate frequency transmitting port MB RFIN1, the first The output terminal of the intermediate frequency power amplifier 111 is connected to the switching circuit 150, and is used for performing power amplification processing on the first intermediate frequency band signal received by the first intermediate frequency transmitting port MB RFIN1. In an embodiment, the first middle frequency band signal may include a signal of the B3 or B1 frequency band. In an exemplary example, as shown in FIG. 10, the switching circuit 150 may at least include a first intermediate frequency duplexer 151, the common port of the first intermediate frequency duplexer 151 is connected to the intermediate frequency auxiliary transceiver port MB INOUT, through The amplified first intermediate frequency signal passes through the first intermediate frequency duplexer 151 from the intermediate frequency auxiliary transceiver port MB INOUT. In one embodiment, the first transmission path may include: the first intermediate frequency transmission port MB RFIN1, the first intermediate frequency power amplifier 111, the first intermediate frequency band duplexer 151, the intermediate frequency auxiliary transceiver port MB INOUT, and the antenna. path.

In an exemplary embodiment, as shown in FIG. 10 , the second radio frequency MHB L-PA Mid device is also provided with a second antenna port ANT2, which is connected to a first port of the first switch circuit 130. Regarding the implementation of the second transmitting circuit 120 and the first receiving circuit 140, reference may be made to the related description in FIG. 4, and details will not be repeated here. Different from the embodiment shown in Fig. 4, the input end of a low noise amplifier 143 (low noise amplifier LNA6 in the embodiment shown in Fig. 10) is connected with the auxiliary receiving port LNA IN ( The auxiliary receiving port LNA IN6) in the embodiment shown in Figure 4 is connected. In one embodiment, the receiving path may include: the first antenna port ANT1 or the second antenna port ANT1, the first switch circuit 130, the third switch unit 142 or the fifth switch unit 141, the low noise amplifier 143, the fourth switch Unit 144, a receiving path jointly formed by any receiving port LNA OUT, and an intermediate frequency auxiliary receiving port MB RX, an auxiliary receiving port LNA IN, a low noise amplifier 143, a fourth switch unit 144, and any receiving port LNA OUT Another receiving path jointly formed, and another external circuit (not shown in the figure), the third switch unit 142, the low noise amplifier 143, the fourth switch unit 144, and another receiving port LNA OUT jointly formed a receiving channel.

In an exemplary example, as shown in FIG. 10 , the implementation of the first switch circuit 130 , the third transmitting circuit 160 , and the second switch circuit 170 can refer to the related description in FIG. 4 , and details are not repeated here.

In an exemplary example, the second radio frequency MHB L-PA Mid device is also provided with a second coupling output port CPLOUT2, and the radio frequency MHB L-PA Mid device also includes a coupling circuit 183, which is arranged between the first intermediate frequency power amplifier 111 and the intermediate frequency In the radio frequency path between the auxiliary transceiver ports MB INOUT, it is used to couple the intermediate frequency band signal in the radio frequency path to output the coupled signal through the coupling output port CPLOUT2. In an exemplary example, the radio frequency MHB L-PA Mid device is further provided with a coupling output port CPLOUT1, and the radio frequency MHB L-PA Mid device further includes a first coupling unit 181, a second coupling unit 182 and a coupling switch 184. For specific implementation, please refer to the relevant description of the first radio frequency MHB L-PA Mid device, and will not be repeated here.

In an exemplary example, the second radio frequency MHB L-PA Mid device may further include: a first controller 191 and a second controller 192. Wherein, the first controller 191 is respectively connected with each switch unit and each power amplifier in the radio frequency MHB L-PA Mid device, and is used to control the on-off of each switch unit and control the working state of each power amplifier. The second controller 192 can be connected with each low noise amplifier, and is used for adjusting the gain coefficient of each low noise amplifier. For specific implementation, please refer to the relevant description of the first radio frequency MHB L-PA Mid device, and will not be repeated here.

Based on the development trend of miniaturization of the motherboard of terminal equipment, the embodiment of the present application provides a second radio frequency MHB L-PA Mid device, the composition of which is shown in FIG. 10 . The whole chip integrates multi-band transmission and reception channels, including B1/N1, B3/N3, B66, B25, B34, B39, B7, B40, B41 and 2G HB GSM, as well as 3 auxiliary transceiver ports TRX and 6 use Auxiliary receiving port LNA IN for external frequency band expansion.

Based on the second radio frequency MHB L-PA Mid device shown in Figure 10, it can support non-independent networking mode. Exemplarily, to realize 4G and 5G dual connectivity, the first intermediate frequency band may be the B3 frequency band, and the second intermediate frequency band may be the EN-DC combination of B3+N1 such as the N1 frequency band as an example.

The transmission path of the B3 frequency band is as follows:

The first intermediate frequency transmission port MB RFIN1 → the first intermediate frequency power amplifier 111 → the first intermediate frequency duplexer 151 → the intermediate frequency auxiliary transceiver port MB INOUT → antenna.

The receiving channel path of the B3 frequency band is as follows:

Antenna → intermediate frequency auxiliary transceiver port MB INOUT → first intermediate frequency duplexer 151 → intermediate frequency auxiliary receiving port MB RX → auxiliary receiving port LNA IN6 → low noise amplifier LNA6 → contact 6 of the fourth switch unit 144 → receiving port LNA OUT6 → RF transceiver.

The transmission path of the N1 frequency band is as follows:

The receiving channel path of the N1 frequency band is as follows:

The second radio frequency MHB L-PA Mid device provided by the embodiment of the present application no longer needs to plug-in multi-mode multi-frequency power amplifier devices and duplexers to support non-independent networking mode, which reduces the occupied area of PCB and improves the efficiency of radio frequency devices. The integrated level reduces the cost, and after the integration, the power supply, transmission control and other wiring are reduced, and the complexity of the board layout is reduced, thereby improving the performance of the radio frequency transceiver system and communication equipment.

In order to meet the requirements of 5G MB MIMO functions, the embodiment of the present application also provides a radio frequency transceiver system, which is realized by the second radio frequency MHB L-PA Mid device and the low frequency front-end module (LFEM) device provided by the embodiment of the present application . The LFEM device in the embodiment of the present application at least includes: a medium-high frequency antenna port MHB ANT, two auxiliary receiving ports LNA AUX IN, at least three medium-high frequency receiving ports LNA OUT MHB, and corresponding receiving circuits and switch circuits for at least Support diversity reception processing for multiple IF signals. It should be noted that the specific implementation of the LFEM device 60 is not used to limit the protection scope of the present application.

Figure 11 is a schematic structural diagram of the first embodiment of the second radio frequency transceiver system in the embodiment of the present application. As shown in Figure 5, the second radio frequency transceiver system at least includes: a first antenna ANT1, a second antenna ANT2, a third antenna ANT1, The fourth antenna ANT4, the radio frequency transceiver 40, the second radio frequency front-end device (such as the second radio frequency MHB L-PA Mid device 50) and the LFEM device 60, the second combiner in any embodiment of the foregoing Figures 7 to 10 82 , the fourth combiner 84 , the first filter 71 , the second filter 72 and the third filter 73 . in,

The radio frequency transceiver 40 is connected with the second antenna ANT2 through the radio frequency MHB L-PA Mid device 50, the first filter 71 and the second combiner 82 to form the transmission channel of the first intermediate frequency band signal and the main channel of the first intermediate frequency band signal. set receiving channel, and the main set MIMO receiving channel of the second intermediate frequency band signal;

In one embodiment, the first antenna ANT1 can be used for transmitting and receiving the second mid-band signal, and the first antenna ANT1 is connected to the first antenna port ANT1 of the radio frequency MHB L-PA Mid device 50. The second antenna ANT2 can be used for the transmission and main set reception of the first mid-band signal, and the main set MIMO reception of the second mid-band signal. The second antenna ANT2 is connected to the second end of the second combiner 82, and the second A first port of the combiner 82 is connected with an auxiliary receiving port LNA IN5 of the radio frequency MHB L-PA Mid device 50 through the first filter 71, and is used for the main set MIMO reception of the second intermediate frequency band signal, and the second combiner Another first port of the device 82 is connected with the intermediate frequency auxiliary transceiver port MB INOUT of the radio frequency MHB L-PA Mid device 50, for the transmission and reception of the first intermediate frequency band signal, and the intermediate frequency auxiliary reception of the radio frequency MHB L-PA Mid device 50 The port MB RX is connected with an auxiliary receiving port LNA IN6, which is used for the main set reception of the first intermediate frequency band signal. The third antenna ANT3 can be used to realize the diversity reception of the second intermediate frequency band signal, and the third antenna ANT3 is connected to the medium and high frequency antenna port MHB ANT of the LFEM device 60 . The fourth antenna ANT4 can be used to realize the diversity reception of the first intermediate frequency band signal and the diversity MIMO reception of the second intermediate frequency band signal. The fourth antenna ANT4 is connected to the second end of the fourth combiner 84, and the fourth combiner 84 A first port of the second filter 72 is connected with an auxiliary receiving port LNA AUX IN1 of the LFEM device 60 for diversity MIMO reception of the second intermediate frequency band signal, and another first port of the fourth combiner 84 is passed through The third filter 73 is connected to another auxiliary receiving port LNA AUX IN5 of the LFEM device 60 for diversity reception of the first intermediate frequency band signal. It should be noted that the port in the embodiment is only an example, and is not used to limit the protection scope of the present application.

In the second radio frequency transceiver system provided by the embodiment of the present application, on the one hand, since the second radio frequency front-end device integrates the multi-mode multi-frequency power amplifier and the first intermediate frequency band duplexer, no external multi-mode multi-frequency power amplifier device is required The non-independent networking mode can be supported with the preset frequency band duplexer, which reduces the PCB footprint; on the other hand, due to the improved integration of RF devices, the cost is reduced; Routing such as transmission control reduces the complexity of board layout, thereby improving the performance of the radio frequency transceiver system.

In an exemplary example, an embodiment of the present application further provides a radio frequency transceiver system. As shown in Figure 11-12, the radio frequency transceiver system may include an antenna group, a radio frequency MHB L-PA Mid device 50, a radio frequency transceiver 40, an LFEM device 60, multiple filters, multiple switch modules and multiple combiners.

The radio frequency MHB L-PA Mid device 50 is used to support the transceiving and processing of radio frequency signals in multiple intermediate frequency bands and supports the non-independent networking mode, at least supporting the transmitting and receiving processing of the first intermediate frequency band signal and the transmitting and receiving processing of the second intermediate frequency band signal , Main set MIMO receiving processing of the second intermediate frequency band signal. Wherein, the radio frequency LB L-PA Mid device 50 can be the second radio frequency MHB L-PA Mid device in any one of the embodiments shown in FIGS. 7 to 10 . Exemplarily, the frequency bands of multiple intermediate frequency band signals may include at least B1, B3, B25, B34, B66, B39, N1, and N3 frequency bands, wherein the preset first intermediate frequency band may include but not limited to frequency bands such as B3 or B1, The preset second middle frequency band may include but not limited to frequency bands such as N1 or N3.

In the second radio frequency transceiving system shown in Figure 12, also comprise a radio frequency front-end device for supporting the radio frequency signal of a plurality of low frequency bands to send and receive processing, as shown in Figure 12, the second radio frequency front-end device can be a RF LB PA Mid device. It should be noted that the specific implementation of the radio frequency LB PA Mid device in the embodiment of this application is not intended to limit the scope of protection of this application.

Figure 12 is a schematic structural diagram of the second embodiment of the second radio frequency transceiver system in the embodiment of the present application. Based on the radio frequency transceiver system shown in Figure 12 and combined with Figures 10 and 11, the first intermediate frequency band is preset as the B3 frequency band, The second intermediate frequency band is preset as the N1 frequency band as an example to analyze the working principle of the B3+N1 EN-DC as follows.

B3 TX link: the transmission signal (B3 TX1) of the first intermediate frequency band signal is output from the TX1MB port of the radio frequency transceiver 40, through the radio frequency line, to the first intermediate frequency transmission port MB RFIN1 port (of the radio frequency MHB L-PA Mid device 50 It is shown as 4G MB RFIN1 in Fig. 12); After the signal is amplified by the first intermediate frequency power amplifier 111 (shown as MB 4G PA1 in Fig. 12), the signal is sent to the B3 duplexer Duplexer1 and filtered by the B3 TX Filter, and then to the intermediate frequency auxiliary transceiver port MB INOUT output; through Path05, to the second combiner 82; after the second combiner 82 combines, through Path03, B3 TX1 transmits from the second antenna ANT2.

B3PRX link: the receiving signal (B3 RX1) of the first intermediate frequency band signal enters from the second antenna ANT2, passes through the Path03 path, to the second combiner 82; after the second combiner 82 is combined, passes through Path05, to the radio frequency The intermediate frequency auxiliary receiving port MB INOUT of the MHB L-PA Mid device 50, after the B3 duplexer Duplexer1 filters the B3 RX1, from the intermediate frequency auxiliary receiving port MB RX of the radio frequency MHB L-PA Mid device 50 to the MHB PA Mid device 50 via Path11 Auxiliary receiving port LNA IN6 (shown as LMHB LNA IN2 in FIG. 12 ); after being amplified by a low-noise amplifier 143 as LNA6 in FIG. Point 6, output from the receiving port LNA OUT6; B3 RX1 enters the radio frequency transceiver 40 through the SDR PRX3 port.

B3 DRX link: the diversity reception signal (B3 DRX) of the first intermediate frequency band signal enters from the fourth antenna ANT4, passes through Path08 path, to the fourth combiner 84; after the fourth combiner 84 is combined, passes through Path10, To the third filter 73; after B3 DRX is filtered by the third filter 73, to an auxiliary receiving port LNA AUX IN of the LFEM device 60 (shown as LNA AUX HB4 in FIG. 12 ); the SP3T#3 switch inside the LFEM device 60 Switch the single port to the low-noise amplifier LNA3 channel inside the LFEM device 60; after being amplified by the low-noise amplifier LNA3, it goes to the 6P6T switch inside the LFEM device 60; the 6P6T switch is switched to contact 1, from the medium and high frequency receiving port LNA OUT MHB1 port Output: B3 DRX enters the radio frequency transceiver 40 through the SDR DRX0 port.

N1 TX link: the transmission signal (N1 TX) of the second intermediate frequency band signal is output from the TX0 MB port of the radio frequency transceiver 40, through the radio frequency line, to the second intermediate frequency transmission port MB RFIN2 port of the radio frequency MHB L-PA Mid device 50 (represented as 4G MB RFIN2 in FIG. 12); after the signal is amplified by the second intermediate frequency power amplifier 121 (represented as MB 4G PA2 in FIG. 12), the signal is sent to the second switch unit 122 as the 3P5T switch in FIG. 12; the 3P5T switch is switched to Contact 4, after being filtered by N1 TX Filter, goes to the first switch unit 131 (such as the DP7T switch in Figure 12); the DP7T switch is switched to contact 1, and is output from the first antenna port ANT1; via Path02, to the first A combiner 81; after the first combiner 81 is combined, the N1 TX is transmitted from the first antenna ANT1 through Path01.

N1 PRX link: the receiving signal (N1 PRX) of the second intermediate frequency band signal enters from ANT1 on the first day, passes Path01 path, to the first combiner 81; after the first combiner 81 is combined, passes Path02 path, To the first antenna port ANT1 of the MHB PA Mid device 50; the first switch unit 131 (such as the DP7T switch in Figure 12) is switched to the contact 4, after N1 RX filtering, to a third switch of the first receiving circuit 140 Unit 142 (SP3T#1 switch as shown in Figure 12); SP3T#1 switch single port, to a low noise amplifier 143 (LNA1 in the radio frequency MHB L-PA Mid device 50 among Figure 12) path; After the low-noise amplifier LNA1 is amplified, it is sent to the fourth switch unit 144 (such as the 6P6T switch in Figure 12); the 6P6T switch is switched to contact 1, and output to a receiving port LNA OUT (such as the LNA OUT1 in Figure 12); N1 PRX Enter the radio frequency transceiver 40 via the SDR PRX0 port.

N1 PRX MIMO link: the main set MIMO receiving signal (N1 PRX MIMO) of the second intermediate frequency band signal enters from the second antenna ANT2, passes through the Path03 path, and reaches the second combiner 82; after the second combiner 82 is combined , through the Path04 path, to the first filter 71; after the N1 PRX MIMO is filtered by the first filter 71, to an auxiliary receiving port LNA IN5 of the MHB PA Mid device 50 (expressed as LMHB LNA IN1 in Figure 6); After a low noise amplifier 143 (LNA5 as shown in Figure 12) amplifies, to the fourth switch unit 144 (6P6T switch among Figure 12); 6P6T switch switches to contact 5, from a receiving port LNA OUT (such as LNA OUT5) among Fig. 12 outputs; N1 PRX MIMO enters radio frequency transceiver 40 through SDR PRX1 port.

Combined with the above analysis of the working principle of B3+N1 EN-DC, the frequency band configuration of each antenna port is shown in Table 1.

The second radio frequency transceiver system in this application example supports non-independent networking mode. Taking B3+N1 EN-DC combination as an example, B3 has two channels of receiving PRX and DRX, and N1 has four channels of PRX, DRX, PRX MIMO, and DRX MIMO Receiving; and, in the embodiment of the present application, by integrating the external multi-mode multi-frequency power amplifier device and the preset frequency band duplexer into the second radio frequency front-end device, the PCB footprint is reduced; on the other hand, due to the improved radio frequency The integration of the device reduces the cost; moreover, through the integration, the power supply, transmission control and other wiring are reduced, and the complexity of the board layout is reduced, thereby improving the performance of the radio frequency transceiver system. The second radio frequency transceiver system in the example of this application also realizes the transmission and reception channels of multiple frequency bands, including B1/N1, B3/N3, B66, B25, B34, B39, B7, B40, B41 and 2G HB GSM, and 3 One auxiliary transceiver port TRX and six auxiliary receiving ports LNA IN for external frequency band expansion expand the communication frequency band of the radio frequency transceiver system and improve the communication performance of the radio frequency transceiver system.

The embodiment of the present application also provides a communication device. The communication device is provided with the second radio frequency transceiver system in the above embodiment. By setting the second radio frequency transceiver system on the communication device, the external multi-mode multi-frequency power amplifier and The preset frequency band duplexer is integrated in the RF front-end device, which supports the non-independent networking mode and improves the integration level, reducing the PCB footprint; moreover, due to the increase in the integration level of the RF device, the cost is reduced; moreover, Through integration, the routing of power supply and transmission control is reduced, the complexity of board layout is reduced, and the performance of communication equipment is improved.

In order to further reduce the complexity of the external layout and wiring of the radio frequency front-end device, the embodiment of the present application also provides a third radio frequency front-end device, the third radio frequency front-end device integrates an external multi-mode multi-frequency power amplifier device and a preset first frequency band duplexer Into the RF front-end device, in this way, the RF front-end device does not need an external multi-mode multi-frequency power amplifier device and a preset first-band duplexer to support non-independent networking mode, and after integration, it reduces power supply and transmission control Equal routing reduces the complexity of board layout, thereby improving the performance of radio frequency transceiver systems and communication equipment. Compared with the second RF front-end device, an input port of the switching circuit is directly connected to the LNA of the receiving circuit in the RF front-end device through the internal wiring of the device, and no additional auxiliary receiving port is required, which further reduces the external layout and wiring of the RF front-end device of complexity.

Figure 13 is a schematic structural diagram of the first embodiment of the third radio frequency front-end device in the embodiment of the present application, which is used for the main antenna radio frequency link, as shown in Figure 13, the third radio frequency front-end device is provided with at least the first intermediate frequency transmission port MB RFIN1, at least one receiving port LNA OUT, intermediate frequency auxiliary transceiver port MB INOUT; the RF front-end device includes at least:

The switching circuit 150 is connected with the first transmitting circuit 110, the intermediate frequency auxiliary transceiver port MB INOUT, and the first receiving circuit 140, and is used to separate the transmitting and receiving path according to the transmitting and receiving signal direction of the first intermediate frequency band signal to realize single-antenna two-way communication;

The first receiving circuit 140 is connected with the receiving port LNA OUT and the switching circuit 150, and is used to amplify the first intermediate frequency band signal received by the intermediate frequency auxiliary transceiver port MB INOUT of the switching circuit 150 and output it to a receiving port LNA OUT ;

In an exemplary embodiment, the third RF front-end device is also provided with a second intermediate frequency transmitting port MB RFIN2, a first antenna port ANT1, and at least one auxiliary receiving port LAN IN; the third RF front-end device shown in Figure 13 also includes:

The first receiving circuit 140 is also connected to the second transmitting circuit 120, and is also used to amplify and process at least a second intermediate frequency band signal from among a plurality of intermediate frequency band signals from the radio frequency path and output it to another receiving port LNA OUT', amplifying the main MIMO signal of the second intermediate frequency band signal from an auxiliary receiving port LNA IN and outputting it to a receiving port LNA OUT;

In an exemplary example, the switching circuit 150 may be a first mid-band duplexer, which is a three-port radio frequency device, and is used to separate the sending and receiving signals according to the direction of the first mid-band signal. The path is to divide the receiving and transmitting signals of the antenna into two different signal paths according to their directions, so as to realize the two-way communication of a single antenna.

In an exemplary example, the common port of the preset first intermediate frequency band duplexer is connected to the intermediate frequency auxiliary transceiver port MB INOUT for transmitting or receiving the first intermediate frequency band signal through the antenna connected to the intermediate frequency auxiliary transceiver port MB INOUT One of the output ports of the preset first intermediate frequency band duplexer is connected to the output end of the first transmitting circuit 110 for outputting the first intermediate frequency band signal; the other output port of the preset first intermediate frequency band duplexer is connected to An input port of the first receiving circuit 140 is connected to output the first IF signal received through the preset common port of the first IF duplexer. The filtering and isolation of the transmitting signal of the preset first intermediate frequency band and the receiving signal of the preset first intermediate frequency band are realized through the preset first intermediate frequency band duplexer.

The third radio frequency front-end device provided by the embodiment shown in FIG. 13 of the present application is used for the radio frequency link of the main set antenna, supports reception and transmission of intermediate frequency band signals of multiple different frequency bands, and supports non-independent networking mode. The multiple intermediate frequency band signals may include intermediate frequency band signals of different frequency bands in the 4G signal, the 5G NR signal, or the 6G signal. Exemplarily, the frequency bands of the multiple intermediate frequency band signals at least include B1, B25, B34, B66, B39 and N3 frequency bands, and a preset first intermediate frequency band and a preset second intermediate frequency band. In one embodiment, the preset first intermediate frequency band may include but not limited to one of the following: frequency bands such as B3 and B1, and correspondingly, the preset second intermediate frequency band may include but not limited to one of the following: N1, N3, etc. band. In one embodiment, the preset first intermediate frequency band may include but not limited to one of the following: N1, N3 and other frequency bands. Correspondingly, the preset second intermediate frequency band may include but not limited to one of the following: B3, B1, etc. band. In an embodiment, the preset first intermediate frequency band may be the B3 frequency band, and correspondingly, the preset second intermediate frequency band may be the N41 frequency band.

In order to avoid redundant description, only the different parts of the third radio frequency front-end device and the first radio frequency front-end device are described below, and the same parts will not be repeated.

The third RF front-end device shown in Figure 13 can be understood as a package structure, as shown in Figure 13, the RF front-end device is at least provided with the first intermediate frequency transmission port MB RFIN1 and the second intermediate frequency transmission port MB RFIN2 for connecting the radio frequency transceiver , at least two receiving ports LNA OUT, a first antenna port ANT1 for connecting to an antenna, and an intermediate frequency auxiliary transceiver port MB INOUT. Among them, the receiving port LNA OUT, the first intermediate frequency transmitting port MB RFIN1, the second intermediate frequency transmitting port MB RFIN2, the first antenna port ANT1, and the intermediate frequency auxiliary transceiver port MB INOUT can be understood as the RF pin terminals of the RF front-end device, which are used to communicate with Various external devices are connected. In one embodiment, the receiving port LNA OUT, the first intermediate frequency transmitting port MB RFIN1 and the second intermediate frequency transmitting port MB RFIN2 can be used to be connected to the radio frequency transceiver; the first antenna port ANT1 can be used to be connected to the antenna, and the A plurality of intermediate frequency band signals including the second intermediate frequency band signal processed by the radio frequency front-end device are output to the antenna, and each intermediate frequency band signal including the second intermediate frequency band signal received by the antenna can be transmitted to the radio frequency front end device; intermediate frequency auxiliary transceiver The port MB INOUT can be used to connect with another antenna for outputting the first intermediate frequency band signal processed by the RF front-end device to the antenna, and can also input the first intermediate frequency band signal received by the antenna to the RF front-end device to realize Transmitting and receiving signals in the first intermediate frequency band.

In an exemplary example, as shown in FIG. 13 , the third radio frequency front-end device may include: a first transmitting circuit 110 , a switching circuit 150 , a second transmitting circuit 120 , a first receiving circuit 140 and a first switching circuit 130 .

In an illustrative example, as shown in Figure 13, the input end of the first transmitting circuit 110 is connected with the first intermediate frequency transmitting port MB RFIN1, and the first intermediate frequency band signal received by the first intermediate frequency transmitting port MB RFIN1 is amplified. The output end of the first transmission circuit 110 is connected with an output port of the switching circuit 150, and the common port of the switching circuit 150 is connected with the intermediate frequency auxiliary transceiver port MB INOUT, and the first intermediate frequency band signal through the amplifying process passes through the switching circuit 150 from the intermediate frequency auxiliary Transceiver port MB INOUT output. The first transmitting circuit 110 may be provided with a transmitting path to support the transmission of the first intermediate frequency band signal. Exemplarily, the frequency band corresponding to the first intermediate frequency band signal may include, for example, the B3 or B1 frequency band. In an embodiment, the first transmission path may include: a transmission path jointly formed by the first intermediate frequency transmission port MB RFIN1, the first transmission circuit 110, the switching circuit 150, the intermediate frequency auxiliary transceiver port MB INOUT, and the antenna.

In an exemplary example, as shown in FIG. 13 , the implementation of the second transmitting circuit 120 can refer to the relevant description in FIG. 1 , which will not be repeated here.

In an exemplary example, as shown in FIG. 13 , the first receiving circuit 140 is respectively connected to the first switch circuit 130, the second transmitting circuit 120, the switching circuit 150 and the receiving port LNA OUT. The output end of the first receiving circuit 140 is connected to the receiving port LNA OUT. The input terminal of the first receiving circuit 140 includes: a plurality of input ports connected one by one to a plurality of second ports of the first switch circuit 130, an input port connected to another output port of the switching circuit 150, and a second port connected to the first switching circuit 150. Multiple output ports of the second transmitting circuit 120 are connected to multiple input ports in a one-to-one correspondence. The first receiving circuit 140 amplifies the radio frequency signals including the second intermediate frequency band signals from multiple input ports and the first intermediate frequency band signal from the AND switching circuit 150 and outputs them to the receiving port LNA OUT.

The first receiving circuit 140 in this embodiment supports receiving control of any of the above-mentioned mid-band signals. In an embodiment, the first receiving circuit 140 may be provided with multiple receiving channels to support the reception of multiple mid-band signals. In one embodiment, the receiving path may include: a receiving path jointly formed by the first antenna port ANT1, the first switch circuit 130, the first receiving circuit 140, any receiving port LNA OUT, and the first antenna port ANT1, the first A switch circuit 130, a second transmitting circuit 120, a first receiving circuit 140, a receiving path jointly formed by any receiving port LNA OUT, and an intermediate frequency auxiliary transceiver port MB INOUT, a switching circuit 150, the first receiving circuit 120, any receiving port Port LNA OUT jointly constitutes the receiving path. That is, a receiving path may be set for the intermediate frequency band signal of each frequency band, so as to support the receiving and processing of multiple intermediate frequency band signals.

The third radio frequency front-end device shown in Figure 13 of this application is used for the radio frequency link of the main set antenna. It no longer needs to add multi-mode multi-frequency power amplifier devices and duplexers to support the non-independent networking mode, which reduces the PCB occupation. The area improves the integration of radio frequency devices and reduces the cost. After integration, the wiring of power supply and transmission control is reduced, and the complexity of single board wiring layout is reduced, thereby improving the performance of radio frequency transceiver system and communication equipment.

FIG. 14 is a schematic structural diagram of the second embodiment of the third radio frequency front-end device in the embodiment of the present application. For specific implementation, refer to FIG. 2 , and details will not be repeated here.

FIG. 15 is a schematic structural diagram of the third embodiment of the third radio frequency front-end device in the embodiment of the present application. The specific implementation can be referred to in FIG. 3 and will not be repeated here. The difference from the embodiment shown in FIG. It is arranged in the radio frequency path between the switching circuit 150 and the intermediate frequency auxiliary transceiver port MB INOUT.

The embodiment of the present application provides that the third radio frequency front-end device may also be a radio frequency L-PA Mid device. The radio frequency L-PA Mid device can support the reception and transmission of intermediate frequency signals and high frequency signals in different frequency bands, and realize the switching control of receiving and switching between multiple intermediate frequency signals, the switching control of transmitting and the switching control between transmitting and receiving , and realize the receiving switching control, transmitting switching control, and switching control between transmitting and receiving among multiple high-frequency signals, and support non-independent networking mode. The multiple mid- and high-frequency signals may include mid- and high-frequency signals of different frequency bands in the 4G signal and the 5G NR signal. Specifically, the frequency bands of the multiple intermediate frequency signals may include frequency bands B1, B3, B25, B34, B66, B39, N1, and N3. The frequency bands of the plurality of high frequency signals may include B30, B7, B40, B41, N7 and N41. Therefore, the radio frequency L-PA Mid device in the embodiment of the present application can also be called MHB L-PA Mid.

Fig. 16 is the structural representation of the embodiment of the 3rd radio frequency MHB L-PA Mid device in the embodiment of the present application, as shown in Fig. 16, the 3rd radio frequency MHB L-PA Mid device is provided with the first intermediate frequency that is used for being connected with radio frequency transceiver The transmitting port MB RFIN1, the second intermediate frequency transmitting port MB RFIN2, at least two receiving ports LNA OUT, the first antenna port ANT1 for connecting to the antenna, and the intermediate frequency auxiliary transceiver port MB INOUT. Among them, the receiving port LNA OUT, the first IF transmitting port MB RFIN1, the second IF transmitting port MB RFIN2, the IF auxiliary transceiver port MB INOUT, and the first antenna port ANT1 can be understood as the RF pin terminals of the RF LB L-PA Mid device , used to connect with various external devices. In one embodiment, the receiving port LNA OUT, the first intermediate frequency transmitting port MB RFIN1, and the second intermediate frequency transmitting port MB RFIN2 can be used for connecting with the radio frequency transceiver; the first antenna port ANT1 can be used for connecting with the antenna, and the Multiple intermediate frequency band signals including the second intermediate frequency band signal processed by the radio frequency MHB L-PA Mid device are output to the antenna, and each intermediate frequency band signal including the second intermediate frequency band signal received by the antenna can be transmitted to the radio frequency MHB L -PA Mid device; the intermediate frequency auxiliary transceiver port MB INOUT can be used to connect with another antenna, and is used to output the first intermediate frequency band signal processed by the RF LB L-PA Mid device to the antenna, and can also input the signal received by the antenna The first intermediate frequency band signal is sent to the radio frequency LB L-PA Mid device to realize the transmission and reception of the first intermediate frequency band signal.

In an exemplary example, as shown in FIG. 16, the first transmitting circuit 110 may at least include: a first intermediate frequency power amplifier 111, the input end of the first intermediate frequency power amplifier 111 is connected to the first intermediate frequency transmitting port MB RFIN1, and the first intermediate frequency power amplifier 111 is connected to the first intermediate frequency transmitting port MB RFIN1. An output terminal of an intermediate frequency power amplifier 111 is connected to an input port of the first intermediate frequency band duplexer 151, and is used for performing power amplification processing on the first intermediate frequency band signal received by the first intermediate frequency transmitting port MB RFIN1. In an embodiment, the first intermediate frequency band signal includes a B3 or B1 frequency band signal. In an exemplary example, as shown in FIG. 16, the switching circuit 150 may at least include: a first intermediate frequency duplexer 151, the common port of the first intermediate frequency duplexer 151 is connected to the intermediate frequency auxiliary transceiver port MB INOUT, The amplified first intermediate frequency signal is output from the intermediate frequency auxiliary transceiver port MB INOUT through the first intermediate frequency duplexer 151 . In one embodiment, the first transmission path may include: the first intermediate frequency transmission port MB RFIN1, the first intermediate frequency power amplifier 111, the first intermediate frequency band duplexer 151, the intermediate frequency auxiliary transceiver port MB INOUT, and the antenna. path.

In an exemplary embodiment, as shown in FIG. 16 , the third radio frequency MHB L-PA Mid device is also provided with a second antenna port ANT2, which is connected to a first port of the first switch circuit 130. Regarding the implementation of the second transmitting circuit 120 and the first receiving circuit 140, reference may be made to the related description in FIG. 4, and details will not be repeated here. The difference from the embodiment shown in FIG. 4 is that an input terminal of a low noise amplifier 143 (low noise amplifier LNA6 in the embodiment shown in FIG. 16 ) is connected to another input port of the first mid-band duplexer 151 .

In one embodiment, the receiving path may include: the first antenna port ANT1 or the second antenna port ANT1, the first switch circuit 130, the third switch unit 142 or the fifth switch unit 141, the low noise amplifier 143, the fourth switch Unit 144, a kind of receiving path jointly formed by any receiving port LNA OUT, and the intermediate frequency auxiliary receiving port MB RX, switching circuit 151 (such as the first intermediate frequency band duplexer 151 of the preset first intermediate frequency band), a low Noise amplifier 143, fourth switch unit 144, another receiving path jointly formed by any receiving port LNA OUT, and other external circuits (not shown in the figure), third switch unit 142, low noise amplifier 143, the first Another receiving path jointly formed by the four switch units 144 and any receiving port LNA OUT.

In an exemplary example, as shown in FIG. 16 , the implementation of the first switch circuit 130 , the third transmitting circuit 160 , and the second switch circuit 170 can refer to the related description in FIG. 4 , and details are not repeated here.

In an exemplary example, the third radio frequency MHB L-PA Mid device is also provided with a coupling output port CPLOUT2, and the third radio frequency MHB L-PA Mid device also includes a coupling circuit 183, which is arranged between the first intermediate frequency power amplifier 111 and the intermediate frequency In the radio frequency path between the auxiliary transceiver ports MB INOUT, it is used to couple the intermediate frequency band signal in the radio frequency path to output the coupled signal through the coupling output port CPLOUT2. In an exemplary example, the third radio frequency MHB L-PA Mid device is also provided with a coupling output port CPLOUT1, and the radio frequency MHB L-PA Mid device further includes a first coupling unit 181, a second coupling unit 182 and a coupling switch 184. For specific implementation, please refer to the relevant description of the first radio frequency MHB L-PA Mid device, and will not be repeated here. .

In an exemplary example, the third radio frequency MHB L-PA Mid device may further include: a first controller 191 and a second controller 192. Wherein, the first controller 191 is respectively connected with each switch unit and each power amplifier in the radio frequency MHB L-PA Mid device, and is used to control the on-off of each switch unit and control the working state of each power amplifier. The second controller 192 can be connected with each low noise amplifier, and is used for adjusting the gain coefficient of each low noise amplifier. For specific implementation, please refer to the relevant description of the first radio frequency MHB L-PA Mid device, and will not be repeated here.

Based on the miniaturization development trend of the main board of the terminal equipment, the embodiment of the present application provides a third radio frequency MHB L-PA Mid device, and its composition is shown in FIG. 16 . The whole chip integrates multi-band transmission and reception channels, including B1/N1, B3/N3, B66, B25, B34, B39, B7, B40, B41 and 2G HB GSM, as well as 3 auxiliary transceiver ports TRX and 6 use Auxiliary receiving port LNA IN for external frequency band expansion.

Based on the third radio frequency MHB L-PA Mid device shown in Figure 16, it can support non-independent networking mode. Exemplarily, to realize 4G and 5G dual connectivity, the first intermediate frequency band may be the B3 frequency band, and the second intermediate frequency band may be the EN-DC combination of B3+N1 such as the N1 frequency band as an example.

The transmission path of the B3 frequency band is as follows:

The receiving channel path of the B3 frequency band is as follows:

Antenna → intermediate frequency auxiliary transceiver port MB INOUT → first intermediate frequency duplexer 151 → low noise amplifier LNA6 → contact 6 of the fourth switch unit 144 → receiving port LNA OUT6 → radio frequency transceiver.

The transmission path of the N1 frequency band is as follows:

The receiving channel path of the N1 frequency band is as follows:

The third radio frequency MHB L-PA Mid device provided in the embodiment of the present application no longer needs to plug in multi-mode multi-frequency power amplifier devices and preset frequency band duplexers to support the non-independent networking mode, which reduces the PCB footprint and improves The integration of radio frequency devices is improved, the cost is reduced, and after integration, the wiring of power supply and transmission control is reduced, and the complexity of single board wiring layout is reduced, thereby improving the performance of radio frequency transceiver system and communication equipment.

In order to meet the requirements of 5G MB MIMO functions, the embodiment of the present application also provides a radio frequency transceiver system, which is realized by the third radio frequency MHB L-PA Mid device and the LFEM provided in the embodiment of the present application. The LFEM device in the embodiment of the present application at least includes: a medium-high frequency antenna port MHB ANT, two auxiliary receiving ports LNA AUX IN, at least three medium-high frequency receiving ports LNA OUT MHB, and corresponding receiving circuits and switch circuits for at least Support diversity reception processing for multiple IF signals. It should be noted that the specific implementation of the LFEM device 60 is not used to limit the protection scope of the present application.

Figure 17 is a schematic structural diagram of the first embodiment of the third radio frequency transceiver system in the embodiment of the present application. As shown in Figure 17, the third radio frequency transceiver system includes at least: the first antenna ANT1, the second antenna ANT2, the third antenna ANT1, The fourth antenna ANT4, the radio frequency transceiver 40, the third radio frequency front-end device (such as the third radio frequency MHB L-PA Mid device 50) and the LFEM device 60, the second combiner in any embodiment of the foregoing Figures 13 to 16 82 , the fourth combiner 84 , the first filter 71 , the second filter 72 and the third filter 73 . in,

In one embodiment, the first antenna ANT1 can be used for transmitting and receiving the second mid-band signal, and the first antenna ANT1 is connected to the first antenna port ANT1 of the radio frequency MHB L-PA Mid device 50. The second antenna ANT2 can be used for the transmission and main set reception of the first mid-band signal, and the main set MIMO reception of the second mid-band signal. The second antenna ANT2 is connected to the second end of the second combiner 82, and the second A first port of the combiner 82 is connected with an auxiliary receiving port LNA IN5 of the radio frequency MHB L-PA Mid device 50 through the first filter 71, and is used for the main set MIMO reception of the second intermediate frequency band signal, and the second combiner Another first port of the device 82 is connected with the intermediate frequency auxiliary transceiver port MB INOUT of the radio frequency MHB L-PA Mid device 50, and is used for transmitting and receiving the main set of the first intermediate frequency band signal. The third antenna ANT3 can be used to realize the diversity reception of the second intermediate frequency band signal, and the third antenna ANT3 is connected to the medium and high frequency antenna port MHB ANT of the LFEM device 60 . The fourth antenna ANT4 can be used to realize the diversity reception of the first intermediate frequency band signal and the diversity MIMO reception of the second intermediate frequency band signal. The fourth antenna ANT4 is connected to the second end of the fourth combiner 84, and the fourth combiner 84 A first port of the second filter 72 is connected with an auxiliary receiving port LNA AUX IN1 of the LFEM device 60 for diversity MIMO reception of the second intermediate frequency band signal, and another first port of the fourth combiner 84 is passed through The third filter 73 is connected to another auxiliary receiving port LNA AUX IN5 of the LFEM device 60 for diversity reception of the first intermediate frequency band signal. It should be noted that the port in the embodiment is only an example, and is not used to limit the protection scope of the present application.

In the third radio frequency transceiver system provided by the embodiment of the present application, on the one hand, because the radio frequency front-end device integrates the multi-mode multi-frequency power amplifier and the first intermediate frequency band duplexer, it is no longer necessary to install an external multi-mode multi-frequency power amplifier device and pre- The non-independent networking mode can be supported by setting a frequency band duplexer, which reduces the area occupied by the PCB; on the other hand, due to the improved integration of radio frequency devices, the cost is reduced; moreover, through integration, the power supply and transmission control are reduced. Equal routing reduces the complexity of single-board wiring layout, thereby improving the performance of the radio frequency transceiver system.

In an exemplary example, as shown in FIGS. 17-18, the third radio frequency transceiving system may include an antenna group, a radio frequency MHB L-PA Mid device 50, a radio frequency transceiver 40, an LFEM device 60, a plurality of filters, a plurality of switch modules and multiple combiners.

The radio frequency MHB L-PA Mid device 50 is used to support the transceiving and processing of radio frequency signals in multiple intermediate frequency bands and supports the non-independent networking mode, at least supporting the transmitting and receiving processing of the first intermediate frequency band signal and the transmitting and receiving processing of the second intermediate frequency band signal , Main set MIMO receiving processing of the second intermediate frequency band signal. Wherein, the radio frequency LB L-PA Mid device 50 can be the third radio frequency MHB L-PA Mid device in any one of the above-mentioned embodiments in Fig. 13 to Fig. 16 . Exemplarily, the frequency bands of multiple intermediate frequency band signals may include at least B1, B3, B25, B34, B66, B39, N1, and N3 frequency bands, wherein the preset first intermediate frequency band may include but not limited to frequency bands such as B3 or B1, The preset second middle frequency band may include but not limited to frequency bands such as N1 or N3.

In the third radio frequency transceiver system shown in Figure 18, it also includes a radio frequency front-end device for supporting the radio frequency signals of a plurality of low frequency bands to receive and receive processing, as shown in Figure 18, the radio frequency front-end device can be a radio frequency LB PA Mid device. It should be noted that the specific realization of the radio frequency LB PA Mid device in the embodiment of the application is not intended to limit the protection scope of the application.

Fig. 18 is a schematic structural diagram of the second embodiment of the third radio frequency transceiving system in the embodiment of the present application. Based on the radio frequency transceiving system shown in Fig. 18 and in combination with Fig. 16 and Fig. 17, the first intermediate frequency band is preset as the B3 frequency band, The second intermediate frequency band is preset as the N1 frequency band as an example to analyze the working principle of the B3+N1 EN-DC as follows.

B3 TX link: the transmission signal (B3 TX1) of the first intermediate frequency band signal is output from the TX1MB port of the radio frequency transceiver 40, through the radio frequency line, to the first intermediate frequency transmission port MB RFIN1 port (of the radio frequency MHB L-PA Mid device 50 Shown as 4G MB RFIN1 in Figure 18); After the signal is amplified by the first intermediate frequency power amplifier 111 (shown as MB 4G PA1 in Figure 18), the signal is sent to the B3 duplexer Duplexer1 and filtered by the B3 TX Filter, and then sent to the intermediate frequency auxiliary transceiver port MB INOUT output; through Path05, to the second combiner 82; after the second combiner 82 combines, through Path03, B3 TX1 transmits from the second antenna ANT2.

B3PRX link: the receiving signal (B3 RX1) of the first intermediate frequency band signal enters from the second antenna ANT2, passes through the Path03 path, to the second combiner 82; after the second combiner 82 is combined, passes through Path05, to the radio frequency The intermediate frequency auxiliary transceiver port MB INOUT of the MHB L-PA Mid device 50, after the B3 duplexer Duplexer1 filters the B3 RX1, is amplified by a low noise amplifier 143 as shown in LNA6 in Figure 18, and reaches the fourth switch unit 144 as shown in Figure 18 6P6T switch in; 6P6T is switched to contact 6, output from the receiving port LNA OUT6; B3 RX1 enters the radio frequency transceiver 40 through the SDR PRX3 port.

B3 DRX link: the diversity reception signal (B3 DRX) of the first intermediate frequency band signal enters from the fourth antenna ANT4, passes through Path08 path, to the fourth combiner 84; after the fourth combiner 84 is combined, passes through Path10, To the third filter 73; after B3 DRX is filtered by the third filter 73, to an auxiliary receiving port LNA AUX IN of the LFEM device 60 (shown as LNA AUX HB4 in FIG. 18 ); the SP3T#3 switch inside the LFEM device 60 Switch the single port to the low-noise amplifier LNA3 channel inside the LFEM device 60; after being amplified by the low-noise amplifier LNA3, it goes to the 6P6T switch inside the LFEM device 60; the 6P6T switch is switched to contact 1, from the medium and high frequency receiving port LNA OUT MHB1 port Output: B3 DRX enters the radio frequency transceiver 40 through the SDR DRX0 port.

N1 TX link: the transmission signal (N1 TX) of the second intermediate frequency band signal is output from the TX0 MB port of the radio frequency transceiver 40, through the radio frequency line, to the second intermediate frequency transmission port MB RFIN2 port of the radio frequency MHB L-PA Mid device 50 (represented as 4G MB RFIN2 in FIG. 18); after the signal is amplified by the second intermediate frequency power amplifier 121 (represented as MB 4G PA2 in FIG. 18), the signal is sent to the second switch unit 122 as the 3P5T switch in FIG. 18; the 3P5T switch is switched to Contact 4, filtered by N1 TX Filter, to the first switch unit 131 (as shown in the DP7T switch in Figure 18); DP7T switch is switched to contact 1, output from the first antenna port ANT1; via Path02, to the first A combiner 81; after the first combiner 81 is combined, the N1 TX is transmitted from the first antenna ANT1 through Path01.

N1 PRX link: the receiving signal (N1 PRX) of the second intermediate frequency band signal enters from ANT1 on the first day, passes Path01 path, to the first combiner 81; after the first combiner 81 is combined, passes Path02 path, To the first antenna port ANT1 of the MHB PA Mid device 50; the first switch unit 131 (such as the DP7T switch in Figure 18) is switched to the contact 4, after N1 RX filtering, to a third switch of the first receiving circuit 140 Unit 142 (SP3T#1 switch as shown in Figure 18); SP3T#1 switch single port, to a low noise amplifier 143 (LNA1 in the radio frequency MHB L-PA Mid device 50 among Figure 18) passage; After the low-noise amplifier LNA1 is amplified, it is sent to the fourth switch unit 144 (such as the 6P6T switch in Figure 18); the 6P6T switch is switched to contact 1, and output to a receiving port LNA OUT (such as the LNA OUT1 in Figure 18); N1 PRX Enter the radio frequency transceiver 40 via the SDR PRX0 port.

N1 PRX MIMO link: the main set MIMO receiving signal (N1 PRX MIMO) of the second intermediate frequency band signal enters from the second antenna ANT2, passes through the Path03 path, and reaches the second combiner 82; after the second combiner 82 is combined , through the Path04 path, to the first filter 71; after the N1 PRX MIMO is filtered by the first filter 71, to an auxiliary receiving port LNA IN5 of the MHB PA Mid device 50 (expressed as LMHB LNA IN1 in Figure 18); After amplified by a low noise amplifier 143 (LNA5 as shown in Figure 6), to the fourth switch unit 144 (6P6T switch as shown in Figure 18); LNA OUT5) output among Fig. 18; N1 PRX MIMO enters radio frequency transceiver 40 through SDR PRX1 port.

The third radio frequency transceiver system in this application example supports non-independent networking mode. Taking B3+N1 EN-DC combination as an example, B3 has two channels of PRX and DRX reception, and N1 has four channels of PRX, DRX, PRX MIMO, and DRX MIMO Receiving; and, in the embodiment of the present application, by integrating the external multi-mode multi-frequency power amplifier device and the preset frequency band duplexer into the second radio frequency front-end device, the PCB footprint is reduced; on the other hand, due to the improved radio frequency The integration of the device reduces the cost; moreover, the intermediate frequency auxiliary receiving port MBRX and the LNA of the receiving circuit in the RF front-end device are directly connected through the internal wiring of the device, without additional auxiliary receiving ports, which reduces the complexity of the board layout Moreover, through integration, the routing of power supply, transmission control, etc. is reduced, and the complexity of board layout is reduced, thereby improving the performance of the radio frequency transceiver system. The third radio frequency transceiver system in the example of this application also realizes the transmission and reception channels of multiple frequency bands, including B1/N1, B3/N3, B66, B25, B34, B39, B7, B40, B41 and 2G HB GSM, and 3 One auxiliary transceiver port TRX and six auxiliary receiving ports LNA IN for external frequency band expansion expand the communication frequency band of the radio frequency transceiver system and improve the communication performance of the radio frequency transceiver system.

The embodiment of the present application also provides a communication device, the communication device is provided with the third radio frequency transceiver system in the above embodiment, by setting the third radio frequency transceiver system in the communication device, the external multi-mode multi-frequency power amplifier and The preset frequency band duplexer is integrated in the RF front-end device, which supports the non-independent networking mode and improves the integration level, reducing the PCB footprint; moreover, due to the increase in the integration level of the RF device, the cost is reduced; moreover, Through integration, the routing of power supply, transmission control, etc. is reduced, the complexity of single-board wiring layout is reduced, and the performance of communication equipment is improved.

Although the embodiments disclosed in the present application are as above, the content described is only the embodiments adopted to facilitate understanding of the present application, and is not intended to limit the present application. Anyone skilled in the field of this application can make any modifications and changes in the form and details of implementation without departing from the spirit and scope disclosed in this application, but the scope of patent protection of this application must still be The scope defined by the appended claims shall prevail.

Claims

A kind of radio frequency front-end device, it is characterized in that, be used for main collection antenna radio frequency link, be provided with the first intermediate frequency transmission port, intermediate frequency auxiliary transmission port; Described radio frequency front-end device comprises:

The first transmitting circuit is connected to the first intermediate frequency transmitting port and the intermediate frequency auxiliary transmitting port, and is used to perform power amplification processing on the first intermediate frequency signal from the first intermediate frequency transmitting port and output it through the intermediate frequency auxiliary transmitting port;

Wherein, the first intermediate frequency band signal is a signal of one of the preset intermediate frequency bands in the non-independent networking mode;

The radio frequency front-end device is also provided with a second intermediate frequency transmitting port, at least two receiving ports, a first antenna port and at least two auxiliary receiving ports; wherein, the intermediate frequency auxiliary transmitting port and an auxiliary receiving port are connected to an external circuit connection; a second antenna port is also provided; the radio frequency front-end device also includes:

A first switch circuit, a plurality of second ports of the first switch circuit are respectively connected to the second transmitting circuit and the first receiving circuit, a first port of the first switch circuit is connected to the first antenna port, and is used for selectively conducting the first antenna port Two radio frequency paths between the transmitting circuit and the first receiving circuit and the first antenna port; a first port of the first switch circuit is connected to the second antenna port;

The second transmitting circuit is connected to the second intermediate frequency transmitting port, and is used to amplify and process the second intermediate frequency band signal among the plurality of intermediate frequency band signals from the second intermediate frequency transmitting port and output it to the first antenna port, and to output the signal from the second intermediate frequency band to the first antenna port performing amplifying processing on a plurality of intermediate frequency band signals other than the second intermediate frequency band signal at the second intermediate frequency transmitting port and outputting them to the first antenna port or the second antenna port;

The first receiving circuit is connected with the receiving port, the auxiliary receiving port and the second transmitting circuit, and is used for amplifying and processing the first intermediate frequency signal received from the auxiliary receiving port connected to the external circuit and outputting it to a The receiving port is configured to amplify the main set MIMO signal of the second intermediate frequency band signal from an auxiliary receiving port and output it to a receiving port, and to amplify at least the second intermediate frequency band signal among the plurality of intermediate frequency band signals from the radio frequency path process and output to a receiving port;

Wherein, the second intermediate frequency band signal is another preset intermediate frequency band signal in the non-independent networking mode;

The radio frequency front-end device is a radio frequency MHB L-PA Mid device.
The radio frequency front-end device according to claim 1, wherein, the first transmitting circuit comprises: a first intermediate frequency power amplifier; an input end of the first intermediate frequency power amplifier is connected to the first intermediate frequency transmitting port, and the first intermediate frequency power amplifier The output terminal of is connected with the intermediate frequency auxiliary transmitting port.
The radio frequency front-end device according to claim 2, further being provided with a second coupled output port;

The radio frequency front-end device also includes a coupling circuit, which is arranged in the radio frequency path between the first intermediate frequency power amplifier and the intermediate frequency auxiliary transmission port, and is used to couple the first intermediate frequency band signal in the radio frequency path to pass through The second coupled output port outputs a coupled signal.
The radio frequency front-end device according to claim 1, the second transmitting circuit comprising: a second intermediate frequency power amplifier and a second switch unit; wherein,

The input end of the second intermediate frequency power amplifier is connected to the second intermediate frequency transmitting port, and the output end of the second intermediate frequency power amplifier is connected to a first port of the second switch unit for receiving the signal via the second intermediate frequency transmitting port. performing power amplification processing on a plurality of intermediate frequency band signals including the second intermediate frequency band signal;

A plurality of second ports of the second switch unit are connected to the first switch circuit, and are used to output the amplified second intermediate frequency band signal to the first antenna port, and output the amplified signal except the Multiple intermediate frequency band signals other than the second intermediate frequency band signal are output to the first antenna port or the second antenna port; multiple first ports of the second switch unit are correspondingly connected to the first receiving circuit for connecting A plurality of intermediate frequency band signals from the first switch circuit are output to the first receiving circuit.
The radio frequency front-end device according to claim 1, wherein the first receiving circuit comprises: at least three low-noise amplifiers, at least one third switching unit, and a fourth switching unit; wherein,

The input end of a low noise amplifier is connected with the first port of a third switch unit, the second port of the third switch unit is connected with the first switch circuit, the output end of the low noise amplifier is connected with the fourth switch unit connected to a second port, for amplifying the second intermediate frequency signal and outputting it to a receiving port through the fourth switch unit;

The input end of a low noise amplifier is connected to the auxiliary receiving port connected to the external circuit, the output end of the low noise amplifier is connected to a second port of the fourth switch unit, and is used to perform the first intermediate frequency band signal output to a receiving port through the fourth switch unit after amplification processing;

The input end of a low noise amplifier is connected to one of the auxiliary receiving ports, the output end of the low noise amplifier is connected to a second port of the fourth switch unit, and is used for the main set MIMO signal of the second intermediate frequency band signal After being amplified, it is output to a receiving port through the fourth switch unit.
The radio frequency front-end device according to claim 1, wherein the external circuit is a preset first intermediate frequency band duplexer, wherein the preset first intermediate frequency band is the frequency band where the first intermediate frequency band signal is located;

The intermediate frequency auxiliary transmission port is connected to one of the output ports of the preset first intermediate frequency band duplexer for outputting the first intermediate frequency band signal;

One of the auxiliary receiving ports is connected to another output port of the preset first intermediate frequency band duplexer for receiving the first intermediate frequency band signal;

The preset common port of the first mid-band duplexer is used to receive or transmit the first mid-band signal.
The radio frequency front-end device according to claim 6, wherein the preset first intermediate frequency band includes one of the following: B3, B1 frequency bands;

The preset first intermediate frequency band duplexer includes one of the following: B3 duplexer, B1 duplexer;

The preset second intermediate frequency band includes one of the following: N1 and N3 frequency bands.
A radio frequency transceiver system, characterized in that it includes: a first antenna, a second antenna, a third antenna, a fourth antenna, a radio frequency transceiver, an external circuit, a second combiner, a fourth combiner, a first filter device, the second filter and the third filter, the LFEM device, and the radio frequency front-end device as claimed in any one of claims 1 to 7 as the first radio frequency front-end device; wherein,

The radio frequency transceiver is connected to the first antenna via the first radio frequency front-end device, and constitutes a transmission channel of an intermediate frequency band signal including at least the second intermediate frequency band signal and a main set receiving channel of the intermediate frequency band signal including at least the second intermediate frequency band signal;

The radio frequency transceiver is connected to the second antenna through the first radio frequency front-end device, the external circuit, the first filter and the second combiner to form the transmission channel of the first intermediate frequency band signal and the main receiving channel of the first intermediate frequency band signal, And the main set MIMO receiving channel of the second intermediate frequency band signal;

The radio frequency transceiver is connected to the third antenna via the LFEM device to form a diversity receiving channel of the intermediate frequency band signal including at least the second intermediate frequency band signal;

The radio frequency transceiver is connected to the fourth antenna through the LFEM device, the second filter, the third filter and the fourth combiner to form a diversity receiving channel of the first intermediate frequency band signal and a diversity MIMO receiving channel of the second intermediate frequency band signal ;

Wherein, the first intermediate frequency band signal and the second intermediate frequency band signal are signals of two different preset intermediate frequency bands in the non-independent networking mode.
The radio frequency transceiver system according to claim 8, wherein the first antenna is connected to the first antenna port of the first radio frequency front-end device;

The second antenna is connected to the second end of the second combiner, and a first port of the second combiner passes through an auxiliary reception of the first filter and the first radio frequency front-end device port connection; another first port of the second combiner is connected to the common port of the external circuit, and an output port of the external circuit is connected to the intermediate frequency auxiliary transmitting port of the first radio frequency front-end device; the Another output port of the external circuit is connected to an auxiliary receiving port of the first radio frequency front-end device;

The third antenna is connected to the medium and high frequency antenna port of the LFEM device;

The fourth antenna is connected to the second end of the fourth combiner, and a first port of the fourth combiner passes through the second filter and an auxiliary mid-high frequency receiving port of the LFEM device connected, and the other first port of the fourth combiner is connected to another auxiliary medium and high frequency receiving port of the LFEM device through the third filter.
A communication device, comprising the radio frequency transceiver system according to claim 8 or 9.
A radio frequency front-end device, characterized in that it is used for the radio frequency link of the main set antenna, and is provided with a first intermediate frequency transmitting port, at least one receiving port, at least one auxiliary receiving port, an intermediate frequency auxiliary transceiving port, and an intermediate frequency auxiliary receiving port; wherein, The intermediate frequency auxiliary receiving port is connected with an auxiliary receiving port through a radio frequency line; the radio frequency front-end device includes:

The first transmitting circuit is connected to the first intermediate frequency transmitting port and the switching circuit, and is used to amplify the first intermediate frequency band signal from the first intermediate frequency transmitting port and output it from the intermediate frequency auxiliary transceiver port through the switching circuit;

The switching circuit is connected with the first transmitting circuit, the intermediate frequency auxiliary transceiving port, and the intermediate frequency auxiliary receiving port, and is used to separate the transmitting and receiving paths according to the transmitting and receiving signal direction of the first intermediate frequency band signal to realize single-antenna two-way communication;

The first receiving circuit is connected with the receiving port and the auxiliary receiving port, and is used to amplify the first intermediate frequency band signal received through the intermediate frequency auxiliary receiving port from the auxiliary receiving port connected to the intermediate frequency auxiliary receiving port and output it to a receiving circuit. port;

Wherein, the first intermediate frequency band signal is a signal of one of the preset intermediate frequency bands in the non-independent networking mode;

The radio frequency front-end device, wherein the auxiliary receiving port includes at least two; the radio frequency front-end device is also provided with a second intermediate frequency transmission port and a first antenna port; a second antenna port is also provided; the radio frequency front-end device Also includes:

A first switch circuit, a plurality of second ports of the first switch circuit are respectively connected to the second transmitting circuit and the first receiving circuit, a first port of the first switch circuit is connected to the first antenna port, and is used to select and guide Connect the radio frequency path between the second transmitting circuit and the first receiving circuit and the first antenna port; a first port of the first switch circuit is connected to the second antenna port;

The second transmitting circuit is connected to the second intermediate frequency transmitting port, and is used to amplify and process the second intermediate frequency band signal among the plurality of intermediate frequency band signals from the second intermediate frequency transmitting port and output it to the first antenna port, and to output the signal from the second intermediate frequency band to the first antenna port performing amplifying processing on a plurality of intermediate frequency band signals other than the second intermediate frequency band signal at the second intermediate frequency transmitting port and outputting them to the first antenna port or the second antenna port;

The first receiving circuit is also connected to the second transmitting circuit, and is also used to amplify and process at least the second intermediate frequency band signal from among the plurality of intermediate frequency band signals from the radio frequency path and output it to a receiving port, for amplifying the main MIMO signal of the second intermediate frequency band signal at the auxiliary receiving port and outputting it to one of the receiving ports;

Wherein, the second intermediate frequency band signal is another preset intermediate frequency band signal in the non-independent networking mode;

The radio frequency front-end device is a radio frequency MHB L-PA Mid device.
The radio frequency front-end device according to claim 11, wherein, the first transmitting circuit comprises: a first intermediate frequency power amplifier; the input end of the first intermediate frequency power amplifier is connected to the first intermediate frequency transmitting port, and the first intermediate frequency power amplifier The output terminal is connected with the switching circuit.
The radio frequency front-end device according to claim 11, wherein the switching circuit is a preset first intermediate frequency band duplexer, wherein the preset first intermediate frequency band is the frequency band where the first intermediate frequency band signal is located;

The common port of the first intermediate frequency duplexer is connected to the intermediate frequency auxiliary transceiver port, and is used to transmit or receive the first intermediate frequency signal through the antenna connected to the intermediate frequency auxiliary transceiver port;

One of the output ports of the first intermediate frequency band duplexer is connected to the output end of the first transmitting circuit for outputting the first intermediate frequency band signal;

The other output port of the first IF duplexer is connected to the auxiliary IF receiving port for outputting the first IF signal received through the common port of the first IF duplexer.
The radio frequency front-end device according to claim 13, wherein the preset first intermediate frequency band includes one of the following: B3, B1 frequency bands;

The preset first intermediate frequency band duplexer includes one of the following: B3 duplexer, B1 duplexer;

The preset second intermediate frequency band includes one of the following: N1 and N3 frequency bands.
The radio frequency front-end device according to claim 11, said radio frequency front-end device is also provided with a second coupled output port;

The radio frequency front-end device also includes a coupling circuit, which is arranged in the radio frequency path between the switching circuit and the intermediate frequency auxiliary transceiver port, and is used to couple the first intermediate frequency band signal in the radio frequency path to pass through the first intermediate frequency band signal. The second coupled output port outputs coupled signals.
The radio frequency front-end device according to claim 11, the second transmitting circuit comprises: a second intermediate frequency power amplifier and a second switch unit; wherein,

The input end of the second intermediate frequency power amplifier is connected to the second intermediate frequency transmitting port, and the output end of the second intermediate frequency power amplifier is connected to a first port of the second switch unit for receiving the signal via the second intermediate frequency transmitting port. performing power amplification processing on a plurality of intermediate frequency band signals including the second intermediate frequency band signal;

A plurality of second ports of the second switch unit are connected to the first switch circuit, and are used to output the amplified second intermediate frequency band signal to the first antenna port, and output the amplified signal except the A plurality of intermediate frequency band signals other than the second intermediate frequency band signal are output to the first antenna port or the second antenna port.
The radio frequency front-end device according to claim 11, wherein the first receiving circuit comprises: at least three low-noise amplifiers, at least one third switching unit, and a fourth switching unit; wherein,

The input end of a low noise amplifier is connected with a first port of a third switch unit, a second port of the third switch unit is connected with the first switch circuit, and the output end of the low noise amplifier is connected with the fourth switch A second port of the unit is connected, and is used to amplify the second intermediate frequency signal and output it to a receiving port through the fourth switch unit;

The input end of a low noise amplifier is connected to the auxiliary receiving port connected to the auxiliary receiving port of the intermediate frequency, and the output end of the low noise amplifier is connected to the other second port of the fourth switch unit, which is used to connect the first intermediate frequency The frequency band signal is amplified and output to a receiving port through the fourth switch unit;

The input end of a low noise amplifier is connected to one of the auxiliary receiving ports, the output end of the low noise amplifier is connected to another second port of the fourth switch unit, and is used for main set MIMO of the second intermediate frequency band signal After the signal is amplified and processed, it is output to a receiving port through the fourth switch unit.
A radio frequency transceiver system, characterized in that it includes: a first antenna, a second antenna, a third antenna, a fourth antenna, a radio frequency transceiver, a second combiner, a fourth combiner, a first filter, a fourth The second filter and the third filter, the LFEM device, and the radio frequency front-end device as claimed in any one of claims 11 to 17 as the second radio frequency front-end device; wherein,

The radio frequency transceiver is connected to the first antenna through the second radio frequency front-end device, and constitutes at least the transmission channel of the intermediate frequency band signal including the second intermediate frequency band signal and the main receiving channel of the intermediate frequency band signal including at least the second intermediate frequency band signal;

The radio frequency transceiver is connected to the second antenna through the second radio frequency front-end device, the first filter and the second combiner to form the transmission channel of the first intermediate frequency band signal, the main receiving channel of the first intermediate frequency band signal, and at least the second The main MIMO receiving channel of the second medium frequency band signal;

The radio frequency transceiver is connected to the third antenna via the LFEM device to form a diversity receiving channel of the intermediate frequency band signal including at least the second intermediate frequency band signal;

The radio frequency transceiver is connected to the fourth antenna through the LFEM device, the second filter, the third filter and the fourth combiner to form a diversity receiving channel of the first intermediate frequency band signal and a diversity MIMO receiving channel of the second intermediate frequency band signal ;

Wherein, the first intermediate frequency band signal and the second intermediate frequency band signal are signals of two different preset intermediate frequency bands in the non-independent networking mode.
The radio frequency transceiver system according to claim 18, wherein the first antenna is connected to the first antenna port of the second radio frequency front-end device;

The second antenna is connected to the second end of the second combiner, and a first port of the second combiner passes through an auxiliary reception of the first filter and the second radio frequency front-end device port connection; another first port of the second combiner is connected to the intermediate frequency auxiliary transceiver port of the second radio frequency front-end device; the intermediate frequency auxiliary receiving port of the second radio frequency front-end device is connected to the second radio frequency front-end An auxiliary receive port connection of the device;

The third antenna is connected to the medium and high frequency antenna port of the LFEM device;

The fourth antenna is connected to the second end of the fourth combiner, and a first port of the fourth combiner passes through the second filter and an auxiliary mid-high frequency receiving port of the LFEM device connected, and the other first port of the fourth combiner is connected to another auxiliary medium and high frequency receiving port of the LFEM device through the third filter.
A communication device, comprising the radio frequency transceiver system according to claim 18 or 19.
A kind of radio frequency front-end device, it is characterized in that, be used for main collection antenna radio frequency link, be provided with the first intermediate frequency transmitting port, at least one receiving port, intermediate frequency auxiliary transceiving port; Described radio frequency front-end device comprises:

The first transmitting circuit is connected to the first intermediate frequency transmitting port and the switching circuit, and is used to amplify the first intermediate frequency band signal from the first intermediate frequency transmitting port and output it from the intermediate frequency auxiliary transceiver port through the switching circuit;

The switching circuit is connected to the first transmitting circuit, the intermediate frequency auxiliary transceiver port, and the first receiving circuit, and is used to separate the transmitting and receiving paths according to the transmitting and receiving signal direction of the first intermediate frequency band signal to realize single-antenna two-way communication;

The first receiving circuit is connected to the receiving port and the switching circuit, and is used to amplify the first intermediate frequency signal received through the intermediate frequency auxiliary transceiver port of the switching circuit and output it to a receiving port;

Wherein, the first intermediate frequency band signal is a signal of one of the preset intermediate frequency bands in the non-independent networking mode;

The radio frequency front-end device is also provided with a second intermediate frequency transmitting port, a first antenna port, and at least one auxiliary receiving port; a second antenna port is also provided; the radio frequency front-end device also includes:

A first switch circuit, a plurality of second ports of the first switch circuit are respectively connected to the second transmitting circuit and the first receiving circuit, a first port of the first switch circuit is connected to the first antenna port, and is used for selectively conducting the first antenna port. Two radio frequency paths between the transmitting circuit and the first receiving circuit and the first antenna port; a first port of the first switch circuit is connected to the second antenna port;

The second transmitting circuit is connected to the second intermediate frequency transmitting port, and is used to amplify and process the second intermediate frequency band signal among the plurality of intermediate frequency band signals from the second intermediate frequency transmitting port and output it to the first antenna port, and to output the signal from the second intermediate frequency band to the first antenna port performing amplifying processing on a plurality of intermediate frequency band signals other than the second intermediate frequency band signal at the second intermediate frequency transmitting port and outputting them to the first antenna port or the second antenna port;

The first receiving circuit is also connected to the second transmitting circuit, and is also used to amplify and process at least the second intermediate frequency band signal among the plurality of intermediate frequency band signals from the radio frequency channel and output it to another receiving port, Amplifying and processing the main MIMO signal of the second intermediate frequency band signal at the auxiliary receiving port and outputting it to one of the receiving ports;

Wherein, the second intermediate frequency band signal is another preset intermediate frequency band signal in the non-independent networking mode;

The radio frequency front-end device is a radio frequency MHB L-PA Mid device.
The radio frequency front-end device according to claim 21, wherein the first transmitting circuit comprises: a first intermediate frequency power amplifier; the input end of the first intermediate frequency power amplifier is connected to the first intermediate frequency transmitting port, and the first intermediate frequency power amplifier The output terminal of is connected with an input port of the switching circuit.
The radio frequency front-end device according to claim 22, wherein the switching circuit is a preset first intermediate frequency band duplexer, wherein the preset first intermediate frequency band is the frequency band where the first intermediate frequency band signal is located;

The common port of the first intermediate frequency duplexer is connected to the intermediate frequency auxiliary transceiver port, and is used to transmit or receive the first intermediate frequency signal through the antenna connected to the intermediate frequency auxiliary transceiver port;

One of the output ports of the first intermediate frequency band duplexer is connected to the output end of the first transmitting circuit for outputting the first intermediate frequency band signal;

The other output port of the first IF duplexer is connected to an input port of the first receiving circuit for outputting the first IF signal received through the common port of the first IF duplexer.
The radio frequency front-end device according to claim 23, wherein the preset first intermediate frequency band includes one of the following: B3, B1 frequency bands;

The preset first intermediate frequency band duplexer includes one of the following: B3 duplexer, B1 duplexer;

The preset second intermediate frequency band includes one of the following: N1 and N3 frequency bands.
According to the radio frequency front-end device according to claim 21, the radio frequency front-end device is also provided with a second coupled output port;

The radio frequency front-end device also includes a coupling circuit, which is arranged in the radio frequency path between the switching circuit and the intermediate frequency auxiliary transceiver port, and is used to couple the first intermediate frequency band signal in the radio frequency path to pass through the first intermediate frequency band signal. The second coupled output port outputs coupled signals.
The radio frequency front-end device according to claim 21, wherein the second transmitting circuit comprises: a second intermediate frequency power amplifier and a second switch unit; wherein,

The input end of the second intermediate frequency power amplifier is connected to the second intermediate frequency transmitting port, and the output end of the second intermediate frequency power amplifier is connected to a first port of the second switch unit for receiving the signal via the second intermediate frequency transmitting port. performing power amplification processing on a plurality of intermediate frequency band signals including the second intermediate frequency band signal;

A plurality of second ports of the second switch unit are connected to the first switch circuit, and are used to output the amplified second intermediate frequency band signal to the first antenna port, and output the amplified signal except the A plurality of intermediate frequency band signals other than the second intermediate frequency band signal are output to the first antenna port or the second antenna port.
The radio frequency front-end device according to claim 21, wherein the first receiving circuit comprises: at least three low-noise amplifiers, at least one third switching unit, and a fourth switching unit; wherein,

The input end of a low noise amplifier is connected with a first port of a third switch unit, a second port of the third switch unit is connected with the first switch circuit, and the output end of the low noise amplifier is connected with the fourth switch A second port of the unit is connected, and is used to amplify the second intermediate frequency signal and output it to a receiving port through the fourth switch unit;

The input end of a low noise amplifier is connected to the other input port of the switching circuit, and the output end of the low noise amplifier is connected to a second port of the fourth switch unit for amplifying the first intermediate frequency band signal output to a receiving port through the fourth switch unit after processing;

The input end of a low noise amplifier is connected to one of the auxiliary receiving ports, the output end of the low noise amplifier is connected to a second port of the fourth switch unit, and is used for the main set MIMO signal of the second intermediate frequency band signal After being amplified, it is output to a receiving port through the fourth switch unit.
A radio frequency transceiver system, characterized in that it includes: a first antenna, a second antenna, a third antenna, a fourth antenna, a radio frequency transceiver, a second combiner, a fourth combiner, a first filter, a fourth The second filter and the third filter, the LFEM device, and the radio frequency front-end device according to any one of claims 23 to 30 as the third radio frequency front-end device; wherein,

The radio frequency transceiver is connected to the first antenna through the third radio frequency front-end device, and constitutes at least the transmission channel of the intermediate frequency band signal including the second intermediate frequency band signal and the main receiving channel of the intermediate frequency band signal including at least the second intermediate frequency band signal;

The radio frequency transceiver is connected to the second antenna through the third radio frequency front-end device, the first filter and the second combiner to form the transmission channel of the first intermediate frequency band signal, the main receiving channel of the first intermediate frequency band signal, and the second The main set MIMO receiving channel of the mid-band signal;

The radio frequency transceiver is connected to the third antenna via the LFEM device to form a diversity receiving channel of the intermediate frequency band signal including at least the second intermediate frequency band signal;

The radio frequency transceiver is connected to the fourth antenna through the LFEM device, the second filter, the third filter and the fourth combiner to form a diversity receiving channel of the first intermediate frequency band signal and a diversity MIMO receiving channel of the second intermediate frequency band signal ;

Wherein, the first intermediate frequency band signal and the second intermediate frequency band signal are signals of two different preset intermediate frequency bands in the non-independent networking mode.
The radio frequency transceiver system according to claim 28, wherein the first antenna is connected to the first antenna port of the third radio frequency front-end device;

The second antenna is connected to the second end of the second combiner, and a first port of the second combiner passes through an auxiliary reception of the first filter and the third radio frequency front-end device port connection; another first port of the second combiner is connected to the intermediate frequency auxiliary transceiver port of the third radio frequency front-end device;

The third antenna is connected to the medium and high frequency antenna port of the LFEM device;

The fourth antenna is connected to the second end of the fourth combiner, and a first port of the fourth combiner passes through the second filter and an auxiliary mid-high frequency receiving port of the LFEM device connected, and the other first port of the fourth combiner is connected to another auxiliary medium and high frequency receiving port of the LFEM device through the third filter.
A communication device, comprising the radio frequency transceiver system according to claim 28 or 29.