CN210157186U

CN210157186U - Channel module, transceiver and communication system

Info

Publication number: CN210157186U
Application number: CN201921274860.9U
Authority: CN
Inventors: 余江; 覃周; 刘洋; 曾超杰
Original assignee: Guangzhou Haige Communication Group Inc Co
Current assignee: Guangzhou Haige Communication Group Inc Co
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2020-03-17
Anticipated expiration: 2029-08-07

Abstract

The application relates to a channel module, a transceiver and a communication system, wherein the channel module comprises a transceiver circuit which is used for being connected between a service module and a power amplifier module; the frequency synthesizer also comprises a frequency synthesis circuit and a digital control circuit connected with the frequency synthesis circuit; the frequency synthesis circuit and the digital control circuit are both used for connecting the service module; the transceiver circuit comprises a reconfigurable filtering and amplifying circuit used for connecting the power amplifier module and an intermediate frequency filtering and amplifying circuit used for connecting the service module; the intermediate frequency filtering and amplifying circuit is respectively connected with the frequency synthesis circuit, the digital control circuit and the reconfigurable filtering and amplifying circuit; the reconfigurable filtering amplifying circuit is connected with the digital control circuit; the method and the device improve the quality of the received and transmitted signals and meet the requirement of broadband communication; the reconfigurable filter bank can be reconfigured according to the frequency band of the radio frequency signal, so that the reconfigurable filter bank can adapt to different waveform requirements and different communication systems, and the universality of a receiving and transmitting circuit is ensured.

Description

Channel module, transceiver and communication system

Technical Field

The present application relates to the field of wireless communication technologies, and in particular, to a transceiver and a communication system.

Background

With the development of wireless communication technology, ultra-short wave communication has emerged. In the current ultra-short wave communication, the communication frequency generally does not exceed 512 MHz, and the communication bandwidth is not more than 3 MHz. The operating frequency band of the conventional ultrashort wave transceiver is 30 mhz to 512 mhz, and the bandwidth is typically 70 khz, 250 khz, 2 mhz, wherein one part of the transceiver can support single channel operation, and the other part of the transceiver can support dual channel independent operation.

However, the inventors have found that at least the following problems exist in the conventional techniques: under the current application requirements of high speed and broadband, the traditional transceiver can only support communication signals within a frequency band of 30 megahertz to 512 megahertz, and cannot meet the broadband communication requirement.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a channel module, a transceiver and a communication system capable of meeting the requirement of broadband communication.

In order to achieve the above object, in one aspect, an embodiment of the present application provides a channel module, including a transceiver circuit for connecting between a service module and a power amplifier module; the frequency synthesizer also comprises a frequency synthesis circuit and a digital control circuit connected with the frequency synthesis circuit; the frequency synthesis circuit and the digital control circuit are both used for connecting the service module;

the transceiver circuit comprises a reconfigurable filtering and amplifying circuit used for connecting the power amplifier module and an intermediate frequency filtering and amplifying circuit used for connecting the service module; the intermediate frequency filtering and amplifying circuit is respectively connected with the frequency synthesis circuit, the digital control circuit and the reconfigurable filtering and amplifying circuit; the reconfigurable filtering amplifying circuit is connected with the digital control circuit;

the reconfigurable filtering amplification circuit comprises a first reconfigurable filter bank and a second reconfigurable filter bank; the first reconfigurable filter bank is respectively connected with the intermediate frequency filtering amplifying circuit and the power amplifier module; the second reconfigurable filter bank is respectively connected with the intermediate frequency filtering amplifying circuit and the power amplifier module;

the first reconfigurable filter bank is used for filtering interference signals to obtain communication signals within a frequency band of 30 MHz to 512 MHz; the second reconfigurable filter bank is a filter bank for filtering interference signals to obtain communication signals within a frequency band of 512 megahertz to 2200 megahertz.

In one embodiment, the reconfigurable filtering and amplifying circuit further comprises a limiting and amplifying circuit and a detecting circuit;

the first reconfigurable filter bank is connected with the intermediate frequency filtering amplifying circuit through the detection circuit and the amplitude limiting amplifying circuit in sequence; the second reconfigurable filter bank is connected with the intermediate frequency filtering amplifying circuit through the detection circuit and the amplitude limiting amplifying circuit in sequence.

In one embodiment, the number of the limiting amplification circuits is two; the number of the detection circuits is two;

the first reconfigurable filter bank is connected with the intermediate frequency filtering amplifying circuit through any detection circuit and any amplitude limiting amplifying circuit in sequence;

the second reconfigurable filter bank is connected with the intermediate frequency filtering amplifying circuit through another detection circuit and another amplitude limiting amplifying circuit in sequence.

In one embodiment, the intermediate frequency filtering and amplifying circuit comprises a low noise filtering and amplifying circuit, a first intermediate frequency processing circuit and a second intermediate frequency processing circuit which are connected in sequence;

the low-noise filtering amplification circuit is respectively connected with the first reconfigurable filter bank, the second reconfigurable filter bank and the digital control circuit; the first intermediate frequency processing circuit is respectively connected with the digital control circuit and the frequency synthesis circuit; the second intermediate frequency processing circuit is respectively connected with the digital control circuit and the frequency synthesis circuit.

In one embodiment, the first intermediate frequency processing circuit comprises a first intermediate frequency filter bank, a first uplink and downlink amplifying circuit and a first mixer connected with the frequency synthesizing circuit; the second intermediate frequency processing circuit comprises a second intermediate frequency filter bank, a second uplink and downlink amplifying circuit and a second mixer connected with the frequency synthesis circuit;

the first mixer is respectively connected with the low-noise filtering and amplifying circuit, the first intermediate frequency filter bank and the second intermediate frequency filter bank; the first intermediate frequency filter bank is connected with the first uplink and downlink amplifying circuit; the first uplink and downlink amplifying circuit is connected with the second frequency mixer; the second mixer is connected with a second intermediate frequency filter bank; the second intermediate frequency filter bank is connected with a second uplink and downlink amplifying circuit; the second uplink and downlink amplifying circuit is used for connecting the service module.

The embodiment of the application provides a transceiver, which comprises a control module, a service module, a channel module and a power amplifier module which are connected in sequence, wherein the channel module and the power amplifier module are provided with a plurality of channels;

the power amplifier module is also used for connecting an antenna.

In one embodiment, the service module comprises a clock management circuit, an intermediate frequency digital processing circuit and a service SOC connected with the control module;

the service SOC is respectively connected with the clock management circuit, the intermediate frequency digital processing circuit and the channel module; the intermediate frequency digital processing circuit is connected with the channel module.

In one embodiment, the service SOC is a multi-core heterogeneous SOC;

the service module also comprises an LPDDR and a flash memory; both LPDDR and flash are connected to the traffic SOC.

In one embodiment, the control module comprises a control SOC, an audio processing circuit, a display device, a control device and an Ethernet circuit;

the control SOC is respectively connected with the audio processing circuit, the display equipment, the control equipment, the Ethernet circuit and the service module.

In one embodiment, the control module further comprises an LPDDR, a flash memory, and a wireless communication module; the LPDDR, the flash memory and the wireless communication module are all connected with the control SOC.

In one embodiment, the number of the service modules, the number of the power amplifier modules and the number of the channel modules are all multiple;

each service module is connected with the control module; the plurality of service modules are connected with the plurality of channel modules in a one-to-one correspondence manner; the plurality of channel modules are connected with the plurality of power amplifier modules in a one-to-one correspondence manner.

In one embodiment, the transceiver further comprises a power module; the power module is respectively connected with the control module, the service module, the power amplification module and the channel module.

Embodiments of the present application provide a communication system, including a transceiver in any of the embodiments.

One of the above technical solutions has the following advantages and beneficial effects:

the first reconfigurable filter bank is respectively connected with the power amplifier module, the digital control circuit and the intermediate frequency filtering and amplifying circuit, the second reconfigurable filter bank is respectively connected with the power amplifier module, the digital control circuit and the intermediate frequency filtering and amplifying circuit, and the intermediate frequency filtering and amplifying circuit is respectively connected with the service module, the frequency synthesis circuit and the digital control circuit, so that communication signals of corresponding frequency bands can be processed through the first reconfigurable filter bank and the second reconfigurable filter bank respectively, signals in the frequency band of 30 MHz to 2200 MHz can be received and transmitted, and the broadband communication requirement is met while the quality of the received and transmitted signals is improved; the reconfigurable filter bank can be reconfigured according to the frequency band of the radio frequency signal, so that the reconfigurable filter bank can adapt to different waveform requirements and different communication systems, and the universality of a receiving and transmitting circuit is ensured.

Drawings

Other features, objects and advantages of the present application will become more apparent upon reading of the following detailed description of non-limiting embodiments thereof, made with reference to the accompanying drawings in which:

FIG. 1 is a block diagram of a channel module in one embodiment;

FIG. 2 is a circuit diagram of a limiting amplification circuit in one embodiment;

FIG. 3 is a block diagram of an IF filter amplifier circuit according to an embodiment;

FIG. 4 is a circuit diagram of a low noise filter amplifier circuit in one embodiment;

FIG. 5 is a circuit diagram of a first IF processing circuit and a second IF processing circuit in one embodiment;

FIG. 6 is a circuit diagram of a channel module in one embodiment;

fig. 7 is a first block diagram of a transceiver in one embodiment;

FIG. 8 is a block diagram of the structure of a service module in one embodiment;

FIG. 9 is a block diagram of a control module in one embodiment;

fig. 10 is a block diagram of a second architecture of a transceiver in one embodiment;

FIG. 11 is a block diagram of a power module in one embodiment.

Detailed Description

To facilitate an understanding of the present application, the present application will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present application are shown in the drawings. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element and be integral therewith, or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In one embodiment, as shown in fig. 1, there is provided a channel module, including a transceiver circuit 110 for connecting between a service module and a power amplifier module; further comprises a frequency synthesizing circuit 120, and a digital control circuit 130 connected to the frequency synthesizing circuit 120; the frequency synthesis circuit 120 and the digital control circuit 130 are both used for connecting service modules;

the transceiver circuit 110 comprises a reconfigurable filtering and amplifying circuit 140 for connecting with a power amplifier module and an intermediate frequency filtering and amplifying circuit 150 for connecting with a service module; the intermediate frequency filtering and amplifying circuit 150 is respectively connected with the frequency synthesis circuit 120, the digital control circuit 130 and the reconfigurable filtering and amplifying circuit 140; the reconfigurable filtering amplification circuit 140 is connected with the digital control circuit 130;

the reconfigurable filter amplification circuit 140 includes a first reconfigurable filter bank 141 and a second reconfigurable filter bank 143; the first reconfigurable filter bank 141 is respectively connected with the intermediate frequency filtering amplifying circuit 150 and the power amplifier module; the second reconfigurable filter bank 143 is respectively connected with the intermediate frequency filtering amplifying circuit 150 and the power amplifier module;

the first reconfigurable filter bank 141 is a filter bank for filtering interference signals to obtain communication signals in a frequency band of 30 mhz to 512 mhz; the second reconfigurable filter bank 143 is a filter bank for filtering out interference signals to obtain communication signals in the frequency band of 512 mhz to 2200 mhz.

In particular, the channel module of the present application is applicable in a transceiver. In order to meet the requirement of broadband communication and realize signal transceiving within the frequency band of 30 MHz to 2200 MHz, compared with the traditional channel module, the frequency planning method adopts different frequency plans, the selected intermediate frequency is completely different, and on the basis, the design of the channel module is completely different from that of the traditional channel module. Meanwhile, after the communication bandwidth is expanded, the receiving end is more sensitive to the stray inside the transceiver, the requirement on the flatness in the band is higher, and the requirement on the design of an intermediate frequency filter is higher. And the instantaneous bandwidth of the power amplifier is wider, which results in increased design difficulty.

In the application, the channel module is connected between the service module and the power amplifier module, so that the intermediate-frequency signal transmitted by the service module can be received, the intermediate-frequency signal is processed to obtain a radio-frequency signal, the radio-frequency transceiving function is realized through the power amplifier module, and further the transmission of the downlink signal is realized; meanwhile, the channel module can also process the radio frequency signal transmitted by the power amplification module to obtain an intermediate frequency signal, and transmits the intermediate frequency signal to the service module, so that the transmission of the uplink signal is realized.

Further, to realize transmission of the uplink signal and the downlink signal, the transceiver circuit may be configured to realize signal conversion between the radio frequency signal and the intermediate frequency signal, that is, up-conversion and down-conversion, and may also be configured to perform amplification, filtering, frequency mixing, AGC (Automatic Gain Control), ALC (Automatic level Control), and other processing on the radio frequency signal and the intermediate frequency signal.

Specifically, the channel module includes a transceiver circuit, a frequency synthesizing circuit connected to the transceiver circuit, and a digital control circuit connected to the transceiver circuit and the frequency synthesizing circuit, respectively. The transceiver circuit, the frequency synthesis circuit and the digital control circuit are all used for connecting the service module, and the transceiver circuit is also used for connecting the power amplifier module.

The digital control circuit is used for analyzing the signal processing protocol and controlling the working states of the transceiving circuit and the frequency synthesis circuit according to the content obtained by analysis. The digital control circuit is connected with the service unit, so that the functions of channel control, channel detection and the like can be realized.

The frequency synthesis circuit is used for generating local oscillation signals, and the receiving and transmitting circuit is connected with the frequency synthesis circuit, so that the local oscillation signals transmitted by the frequency synthesis circuit can be received, and the intermediate frequency signals are subjected to filtering, amplifying, mixing and other processing. In one example, the frequency synthesizing circuit may synthesize the local oscillator signal of the corresponding frequency according to the control of the digital control circuit, and at the same time, the frequency synthesizing circuit may also provide the clock signal for the digital control circuit.

The transceiver circuit comprises a reconfigurable filtering and amplifying circuit and an intermediate frequency filtering and amplifying circuit. The intermediate frequency filtering and amplifying circuit is connected with the service module, when downlink signals are transmitted, the intermediate frequency filtering and amplifying circuit can receive intermediate frequency signals transmitted by the service module, perform intermediate frequency filtering and amplifying processing on the intermediate frequency signals, receive local oscillator signals generated by the frequency synthesis circuit, mix the local oscillator signals with the intermediate frequency signals, and transmit the mixed signals to the reconfigurable filtering and amplifying circuit, so that the signal-to-noise ratio of communication signals can be improved, and the reliability of communication is improved. Similarly, when transmitting the uplink signal, the intermediate frequency filtering and amplifying circuit may receive the radio frequency signal transmitted by the reconfigurable filtering and amplifying circuit, and mix the radio frequency signal to obtain the intermediate frequency signal. Meanwhile, the intermediate frequency filtering and amplifying circuit also performs intermediate frequency filtering and amplifying processing on the intermediate frequency signal and transmits the processed intermediate frequency signal to the service module.

The reconfigurable filtering amplification circuit comprises a first reconfigurable filter bank and a second reconfigurable filter bank, wherein the first reconfigurable filter bank is a filter bank used for processing communication signals within a frequency range of 30 MHz to 512 MHz, and the second reconfigurable filter bank is a filter bank used for processing communication signals within a frequency range of 512 MHz to 2200 MHz.

The digital control circuit is connected with the intermediate frequency filtering and amplifying circuit and the corresponding reconfigurable filter bank according to the frequency of the mixed signals, so that the mixed signals can be filtered through the corresponding reconfigurable filter bank. The power amplifier module is respectively connected with the first reconfigurable filter bank and the second reconfigurable filter bank, so that signals processed by the reconfigurable filter banks can be transmitted through the power amplifier module. In one example, the reconfigurable filtering and amplifying circuit further comprises a first filtering switch connected with the digital control circuit. The digital control circuit can connect the intermediate frequency filtering amplifying circuit with the corresponding reconfigurable filter bank by switching the on-off state of the first filtering switch.

According to the reconfigurable filter bank, communication signals in a frequency range from 30 MHz to 512 MHz are processed through the first reconfigurable filter bank, communication signals in a frequency range from 512 MHz to 2200 MHz are processed through the second reconfigurable filter bank, on one hand, signals in the frequency range from 30 MHz to 2200 MHz can be received and transmitted, broadband communication requirements are met, on the other hand, the quality of the received and transmitted signals can be improved, meanwhile, the reconfigurable filter bank can also guarantee the universality of a receiving and transmitting circuit, and the reconfigurable filter bank can adapt to different waveform requirements.

In one example, the first reconfigurable filter bank may include a first reconfigurable filter, a second reconfigurable filter, and a third reconfigurable filter; the second reconfigurable filter bank may include a fourth reconfigurable filter, a fifth reconfigurable filter, a sixth reconfigurable filter, a seventh reconfigurable filter, and an eighth reconfigurable filter. The first reconfigurable filter is a reconfigurable filter for obtaining communication signals in a frequency band of 30 MHz to 90 MHz; the second reconfigurable filter is a reconfigurable filter for obtaining communication signals in a frequency band from 90 MHz to 225 MHz; the third reconfigurable filter is a reconfigurable filter for obtaining communication signals in a frequency band of 225 MHz to 512 MHz; the fourth reconfigurable filter is a reconfigurable filter for obtaining communication signals in a frequency band of 225 MHz to 550 MHz; the fifth reconfigurable filter is a reconfigurable filter for obtaining communication signals in a frequency band of 550 megahertz to 1000 megahertz; the sixth reconfigurable filter is a reconfigurable filter for obtaining communication signals in a frequency band of 1000 MHz to 1500 MHz; the seventh reconfigurable filter is a reconfigurable filter for obtaining communication signals in a frequency band of 1500 MHz to 2000 MHz; the eighth reconfigurable filter is a reconfigurable filter for deriving communication signals in the 2000 mhz to 2500 mhz frequency band.

the first reconfigurable filter bank is connected with the intermediate frequency filtering amplification circuit through the detection circuit and the amplitude limiting amplification circuit in sequence; the second reconfigurable filter bank is connected with the intermediate frequency filtering amplifying circuit through the detection circuit and the amplitude limiting amplifying circuit in sequence.

Specifically, the first reconfigurable filter bank is connected with a detection circuit, the detection circuit is connected with a limiting amplification circuit, and the limiting amplification circuit is connected with an intermediate frequency filtering amplification circuit; the second reconfigurable filter bank is connected with the detection circuit, the detection circuit is connected with the amplitude limiting amplification circuit, and the amplitude limiting amplification circuit is connected with the intermediate frequency filtering amplification circuit. The amplitude limiting amplifying circuit can carry out amplitude limiting and/or amplifying processing on the input signal, so that the amplitude of the communication signal can be adjusted, and the reliability of communication is ensured.

The amplitude limiting amplification circuit can be connected with the digital control circuit and adjusts the input signal according to the control of the digital control circuit so as to adjust the amplitude of the communication signal, avoid the distortion of the signal and improve the signal-to-noise ratio of the signal. For example, the amplitude limiting and amplifying circuit may include an amplifier and an amplitude limiter, the digital control circuit may transmit an amplification factor and an amplitude limiting level to the amplitude limiting and amplifying circuit, the amplifier amplifies the communication signal according to the amplification factor, and the amplitude limiter limits the communication signal according to the amplitude limiting level, so that the amplitude of the communication signal may be adjusted; or the amplitude limiting amplifying circuit comprises a plurality of different processing links and amplitude limiting switches, wherein the adjusting coefficient (the adjusting coefficient can be an amplifying coefficient and/or an amplitude limiting level) of each processing link is different, and the digital control circuit can process the communication signal through the corresponding processing link by switching the switching state of the amplitude limiting switch, so that the amplitude of the communication signal can be adjusted.

Further, the number of the limiting amplification circuits may be plural, and the number of the detection circuits may be plural. The number of the amplitude limiting amplification circuits and the number of the detection circuits can be determined according to the number of the reconfigurable filter banks, for example, when the channel module includes three reconfigurable filter banks, the number of the amplitude limiting amplification circuits can be three, the plurality of amplitude limiting amplification circuits are connected with the plurality of reconfigurable filter banks in a one-to-one correspondence manner, and the plurality of detection circuits are connected with the plurality of reconfigurable filter banks in a one-to-one correspondence manner.

In one embodiment, the number of limiting amplification circuits is two; the number of the detection circuits is two;

Specifically, the number of limiting amplification circuits may be two, which are the first limiting amplification circuit and the second limiting amplification circuit, respectively, and the number of detection circuits may be two, which are the first detection circuit and the second detection circuit, respectively. The first reconfigurable filter bank can be connected with a first amplitude limiting amplification circuit, the first amplitude limiting amplification circuit is connected with a first detection circuit, and the first detection circuit is connected with an intermediate frequency filtering amplification circuit; the second reconfigurable filter bank can be connected with a second amplitude limiting amplification circuit, the second amplitude limiting amplification circuit is connected with a second detection circuit, and the second detection circuit is connected with the intermediate frequency filtering amplification circuit.

This application is through adopting two amplitude limiting amplifier circuit and two detection circuit to be connected to first reconfigurable filter bank and second reconfigurable filter bank respectively, make the signal of different frequency channels handle through amplitude limiting amplifier circuit and detection circuit that correspond, improved amplitude limiting amplifier circuit, detection circuit and the matching nature of handling the frequency channel, thereby reduced amplitude limiting amplifier circuit and detection circuit to the interference of receiving and dispatching signals.

In one example, as shown in fig. 2, the limiting amplification circuit may include a first limiter 210, a second limiter 220, an up amplifier 230, a down amplifier 240, a first adjustable resistor 250, a first limiting switch 260, and a second limiting switch 270; the first amplitude limiting switch 260 is respectively connected with the digital control circuit, the reconfigurable filter bank (which may be a first reconfigurable filter bank or a second reconfigurable filter bank), the first amplitude limiter 210, the second amplitude limiter 220 and the downlink amplifier 240; the downlink amplifier 240 is connected with the second limit switch 270; the second limit switch 270 is respectively connected to the digital control circuit, the intermediate frequency filtering and amplifying circuit, the first adjustable resistor 250 and the uplink amplifier 230; the upstream amplifier 230 is connected to the first limiter 210; the first adjustable resistor 250 is connected to the second limiter 220.

Referring to fig. 2, the limiting amplification circuit provides three processing chains, respectively: the first uplink processing link and the second uplink processing link are used for processing uplink signals, and the two uplink processing links have different adjusting coefficients; and a downlink processing link formed by the downlink amplifier is used for processing the downlink signal. The digital control circuit controls the on-off states of the first amplitude limiting switch and the second amplitude limiting switch, so that the radio-frequency signals can be processed through different processing links, and the radio-frequency signals can be processed through different adjusting coefficients.

In one embodiment, as shown in fig. 3, the if filter amplifier circuit includes a low noise filter amplifier circuit 310, a first if processing circuit 320, and a second if processing circuit 330 for connecting to a service module, which are connected in sequence;

the low-noise filtering and amplifying circuit 310 is respectively connected with the first reconfigurable filter bank, the second reconfigurable filter bank and the digital control circuit; the first intermediate frequency processing circuit 320 is respectively connected with the digital control circuit and the frequency synthesis circuit; the second intermediate frequency processing circuit 330 is connected to the digital control circuit and the frequency synthesizing circuit, respectively.

Specifically, the low-noise filtering and amplifying circuit is respectively connected to the first intermediate-frequency processing circuit, the first reconfigurable filter bank, the second reconfigurable filter bank and the digital control circuit, and is used for filtering and low-noise amplifying the radio-frequency signal. The first intermediate frequency processing circuit and the second intermediate frequency processing circuit are used for performing intermediate frequency filtering, frequency mixing and amplification processing on signals. According to the signal processing method and device, the first intermediate frequency processing circuit and the second intermediate frequency processing circuit are used for processing signals, and a double-conversion superheterodyne framework with high selectivity is adopted, so that the amplification factor can be continuously improved, and the sensitivity of a channel module can be improved.

In one example, the low noise filtering and amplifying circuit may be as shown in fig. 4, and includes a low noise amplifying circuit, a low noise filter 401, an attenuator 403, a first uplink power amplifier 405, and a first downlink power amplifier 407; the low-noise amplification circuit comprises a first uplink low-noise amplifier 409, a second uplink low-noise amplifier 411, a downlink low-noise amplifier 413 and a second adjustable resistor 415;

the first uplink low-noise amplifier 409 is respectively connected with the first reconfigurable filter bank, the second reconfigurable filter bank and the low-noise filter 401; the second uplink low-noise amplifier 411 is respectively connected with the first reconfigurable filter bank, the second reconfigurable filter bank and the low-noise filter 401; the downlink low noise amplifier 413 is respectively connected with the first reconfigurable filter bank, the second reconfigurable filter bank and the low noise filter 401; the second adjustable resistor 415 is respectively connected with the first reconfigurable filter bank, the second reconfigurable filter bank and the low noise filter 401; the low noise filter 401 is respectively connected to the first uplink power amplifier 405 and the first downlink power amplifier 407; the first uplink power amplifier 405 and the first downlink power amplifier 407 are both connected with the attenuator 403; the attenuator 403 is connected to the first intermediate frequency processing circuit. The amplification factor of the first uplink low noise amplifier 409 and the amplification factor of the second uplink low noise amplifier 411 may be the same or different.

Further, referring to fig. 4, the low noise filtering and amplifying circuit may further include a first low noise switch 417 and a second low noise switch 419, the first low noise switch 417 being connected between the low noise amplifying circuit and the reconfigurable filtering and amplifying circuit, and the second low noise switch 419 being connected between the low noise amplifying circuit and the low noise filter 401. The first low noise switch 417 and the second low noise switch 419 are both connected to a digital control circuit. The digital control circuit switches the switching states of the first low noise switch 417 and the second low noise switch 419, so that the radio frequency signal can be processed by the corresponding low noise amplifier, and the adaptive adjustment of the amplification factor is further realized.

In one embodiment, as shown in fig. 5, the first intermediate frequency processing circuit includes a first intermediate frequency filter bank 501, a first up-down amplifying circuit 503, and a first mixer 505 connected to the frequency synthesizing circuit; the second intermediate frequency processing circuit comprises a second intermediate frequency filter group 507, a second uplink and downlink amplifying circuit 509 and a second mixer 511 connected with the frequency synthesis circuit;

the first mixer 505 is connected to the low noise filtering and amplifying circuit, the first intermediate frequency filter bank 501 and the second intermediate frequency filter bank 507 respectively; the first intermediate frequency filter bank 501 is connected with a first uplink and downlink amplifying circuit 503; the first uplink and downlink amplifying circuit 503 is connected to the second mixer 511; the second mixer 511 is connected to the second intermediate frequency filter bank 507; the second intermediate frequency filter group 507 is connected to a second uplink and downlink amplifying circuit 509; the second uplink and downlink amplifying circuit 509 is used for connecting the service module.

Specifically, when an uplink signal is transmitted, the radio frequency signal processed by the low-noise filtering and amplifying circuit is sequentially processed by the first mixer, the first intermediate frequency filter bank, the first uplink and downlink amplifying circuit, the second mixer, the second intermediate frequency filter bank and the second uplink and downlink amplifying circuit, and the processed signal is output to the service module.

Similarly, when a downlink signal is transmitted, the intermediate frequency signal output by the service module is processed by the second uplink and downlink amplifying circuit, the second intermediate frequency filter bank, the second mixer, the first uplink and downlink amplifying circuit, the first intermediate frequency filter bank and the first mixer in sequence, and the processed signal is output to the low-noise filtering and amplifying circuit.

To facilitate understanding of the channel module of the present application, a specific example will be described below, and as shown in fig. 6, a channel module is provided that includes a digital control circuit, a frequency synthesis circuit, a first reconfigurable filter, a second reconfigurable filter, a third reconfigurable filter, a fourth reconfigurable filter, a fifth reconfigurable filter, a sixth reconfigurable filter, a seventh reconfigurable filter, an eighth reconfigurable filter, a first detection circuit, a second detection circuit, a first clipping amplification circuit, a second clipping amplification circuit, a clipping switch, a low-noise filtering amplification circuit, a first intermediate-frequency processing circuit, and a second intermediate-frequency processing circuit.

Specifically, the power supply circuit is used for providing working voltage for the channel module; the digital control circuit is respectively connected with each switch in the channel module, and further can be connected with an amplifier, an amplitude limiter, an attenuator and/or a filter in the channel module, thereby realizing transceiving control, filter control and gain control. The frequency synthesis circuit comprises a crystal oscillator, a first local oscillator circuit and a second local oscillator circuit, wherein the crystal oscillator is respectively connected with the first local oscillator circuit, the second local oscillator circuit, the service module and the digital control circuit; the first local oscillator circuit is connected with the first frequency mixer; the second local oscillator circuit is connected with the second frequency mixer.

The receiving and transmitting circuit provides a radio frequency channel to realize the functions of signal amplification, filtering and frequency conversion; the frequency synthesis circuit provides a frequency mixing local oscillator for the channel to realize the frequency conversion function; the intermediate frequency filter bank meets the requirement of high selectivity and ensures the signal spectrum purity in the channel; the digital control circuit analyzes the signal processing protocol and controls the working state of the whole transceiving channel.

In one embodiment, as shown in fig. 7, a transceiver is provided, which includes a control module 710, a service module 720, a channel module 730 in any embodiment, and a power amplifier module 740, which are connected in sequence;

the power amplifier module 740 is also used for connecting an antenna.

Specifically, the control module comprises all related functions and interfaces for realizing man-machine interaction of the transceiver, and is mainly used for realizing the universality of an interaction interface with the service module and the standardization of the interface. The service module includes circuits for carrying digital signal processing and comprehensive control service in the transceiver, and may include software platform, waveform loading, running and storing hardware circuit, D/A converter circuit, channel control circuit, etc. The power amplifier module is used for processing the broadband radio frequency signal so as to realize the functions of power amplification, gain control, radio frequency transmitting/receiving and the like of the broadband radio frequency signal and improve the power amplifier efficiency.

The power amplifier module comprises an antenna port, wherein the frequency of the antenna port is 30 megahertz to 2200 megahertz.

In one embodiment, the service module comprises a clock management circuit, an intermediate frequency digital processing circuit and a service SOC (System On Chip) connected with the control module;

In particular, the service module is used to implement the digital intermediate frequency and baseband processing functions of the software radio architecture. The service module adopts a software radio architecture, so that a digital platform suitable for various waveform physiques can be realized, and the universality of the transceiver is improved.

In one embodiment, the service SOC is a multi-core heterogeneous SOC; the service module also comprises an LPDDR and a flash memory; both LPDDR and flash are connected to the traffic SOC.

In one example, the traffic module may include a multi-core SOC, an intermediate frequency digitizing circuit, a clock management circuit, flash memory, and LPDDR (Low Power Double Data Rate SDRAM, Low Power Double Data Rate synchronous dynamic random access memory), as shown in fig. 8. The multi-core SOC is connected with the clock management circuit, the power supply module and the channel module.

The multi-core SOC comprises a plurality of ARM (advanced RISC machines) cores and an FPGA (Field Programmable Gate Array) core, wherein the plurality of ARM cores are respectively connected with the LPDDR, the flash memory and the FPGA core; the FPGA core is respectively connected with the channel module and the intermediate frequency digital processing circuit; the intermediate frequency digital processing circuit is connected with the channel module.

In one embodiment, the control module includes a control SOC, an audio processing circuit, a display device, a control device, and an ethernet circuit;

Specifically, the control module can be used for completing the functions of display control, voice processing, ethernet interface processing and the like of the whole transceiver. An SOC integrating ARM and FPGA can be selected as a control SOC, the control SOC is used as a main processor, the voice processing function is achieved, and an audio interface can be provided externally. Specifically, the control SOC is connected with the audio processing circuit, the audio processing circuit is connected with the audio amplifying circuit, and the audio amplifying circuit is connected with the audio interface, so that the control SOC can receive and process audio signals, and the function of voice control is achieved. In one example, the SOC may be controlled to provide two channels of audio interfaces, the number of the audio processing circuits may be two, and the number of the audio amplifying circuits may be two; the control SOC is respectively connected with the two audio processing circuits; the audio processing circuit is connected with the audio amplifying circuits in a one-to-one corresponding mode, and the audio amplifying circuits are connected with the audio interfaces in a one-to-one corresponding mode. In one example, the control SOC may be connected to the service SOC, and specifically, the control SOC and the service SOC may be interconnected via a Reduced Gigabit Media Independent Interface (RGMII).

Meanwhile, the display device is connected to the control SOC, so that control information can be displayed, and in one example, the display device may be an OLED (Organic Light-Emitting Diode) display screen; the control device controls the SOC through connection, so that control parameters of the transceiver can be adjusted through the control device, in one example, the control device can be a key matrix, and key state signals are transmitted to the control SOC, so that the transceiver can be controlled, the transceiver has the functions of device display screen control and key instruction pickup, human-computer interaction is achieved, meanwhile, the whole board circuit is simplified in design, low in power consumption, high in reliability and good in human-computer interaction.

The Ethernet circuit can comprise an Ethernet interface and an Ethernet switching module which are connected in sequence, and the Ethernet switching module is connected with the control SOC. In one example, the ethernet switching module may control the SOC through the RGMII connection, and the ethernet interface may include four interfaces, which are a channel-one management port, a channel-one service port, a channel-two management port, and a channel-two service port, respectively.

Specifically, the wireless communication module may include a WIFI (mobile hotspot) communication circuit and/or a bluetooth communication circuit, so that communication with an external device may be performed through WIFI and/or bluetooth. Furthermore, the control circuit can also comprise a USB interface and a 232 level conversion circuit, and the USB interface is connected with the 232 level conversion circuit, so that external interface protection can be realized.

In one example, as shown in fig. 9, the control module may include a control SOC, a knob, a USB interface, a 232 level shift circuit, a first audio interface, a first audio processing circuit, a first audio amplification circuit, a second audio interface, a second audio processing circuit, a second audio amplification circuit, an OLED display screen, a key matrix, an ethernet interface, an ethernet switch module, a flash memory, an LPDDR, and a wireless communication module.

Specifically, the control module has a voice processing function and provides audio interfaces of two channels for the outside. In addition, the system has the functions of controlling the display screen of the equipment and picking up the key instruction, and realizes man-machine interaction. The whole board circuit simplifies the design, and has low power consumption, high reliability and good human-computer interaction.

Specifically, a plurality of service modules are connected with a plurality of channel modules in a one-to-one correspondence manner; the plurality of channel modules are connected with the plurality of power amplifier modules in a one-to-one correspondence manner, so that a plurality of channels can be formed, and the plurality of channels can work simultaneously and independently.

In one example, as shown in fig. 10, a transceiver may include one control module, two traffic modules, two power amplifier modules, and two channel modules. The two service modules are connected with the control module, and the service modules, the channel modules and the power amplifier modules are connected in a one-to-one correspondence manner to form dual-channel communication. At this time, the same dual-channel architecture is adopted, so that the transceiver dual-channel can work simultaneously, and the two channels are completely independent and consistent.

The transceiver of the application, the radio frequency covers 30 MHz to 2200 MHz, the bandwidth is expanded to 70 kHz, 25 kHz, 2 MHz, 5 MHz, 10 MHz and 20 MHz, the medium frequency bandwidth is maximum 20 MHz, and the maximum user transmission rate of 54Mbps (megabits per second) is realized. Meanwhile, the double channels work independently, and the work of double receiving, double sending and single receiving and single sending can be met.

Specifically, the power module may be connected to a battery or a power supply, and designed according to actual conditions and design requirements, so that the power module provides corresponding operating voltages for the control module, the service module, the power amplifier module, and the channel module. Further, the functions of power supply filtering, over/under voltage protection, voltage conversion, power supply switch and the like.

In one example, a power module may be as shown in fig. 11, including an input control circuit, a first channel power supply, and a second channel power supply; the digital control circuit is respectively connected with the input control circuit, the first channel power supply and the second channel power supply, so that the digital control circuit controls the power supply channel, for example, the working state of the channel power supply can be switched, and when the first channel power supply is in the working state, the second channel power supply is closed; or when the second channel power supply is in a working state, the first channel power supply is closed, so that the power consumption of the whole machine can be reduced, the output of each channel power supply is independent, and the electromagnetic interference is reduced.

The input control circuit comprises an EMC filter circuit, an input overvoltage protection circuit, an input undervoltage protection circuit, an input overcurrent protection circuit and a voltage conversion circuit. The first channel power supply comprises a first service module power supply, a first channel module power supply, a first power switch and a first power amplifier power supply, and the second channel power supply comprises a second service module power supply, a second channel module power supply, a second power switch and a second power amplifier power supply. The first channel power supply is used for providing working voltage for any service module, any channel module and any power amplifier module, and the second channel power supply is used for providing working voltage for another service module, another channel module and another power amplifier module.

Specifically, the power supply monitoring chip can be used for realizing input current sampling, input voltage sampling and output voltage sampling

In one embodiment, the power amplifier module comprises a power amplifying circuit, a power amplifier biasing circuit, a power amplifier filtering circuit and a detection circuit.

In one embodiment, there is provided a communication system comprising a transceiver as described in any of the above embodiments.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A channel module is characterized by comprising a transceiver circuit connected between a service module and a power amplifier module; the frequency synthesizer also comprises a frequency synthesis circuit and a digital control circuit connected with the frequency synthesis circuit; the frequency synthesis circuit and the digital control circuit are both used for connecting the service module;

the transceiver circuit comprises a reconfigurable filtering and amplifying circuit used for connecting the power amplifier module and an intermediate frequency filtering and amplifying circuit used for connecting the service module; the intermediate frequency filtering amplifying circuit is respectively connected with the frequency synthesis circuit, the digital control circuit and the reconfigurable filtering amplifying circuit; the reconfigurable filtering amplification circuit is connected with the digital control circuit;

the first reconfigurable filter bank is used for filtering interference signals to obtain communication signals within a frequency range of 30 MHz to 512 MHz; the second reconfigurable filter bank is a filter bank for filtering interference signals to obtain communication signals within a frequency band of 512 megahertz to 2200 megahertz.

2. The channel module of claim 1, wherein the reconfigurable filtering and amplifying circuit further comprises a clipping and amplifying circuit and a detecting circuit;

3. The channel module according to claim 2, wherein the number of the limiting amplification circuits is two; the number of the detection circuits is two;

the first reconfigurable filter bank is connected with the intermediate frequency filtering amplifying circuit sequentially through any one detection circuit and any one amplitude limiting amplifying circuit;

the second reconfigurable filter bank is connected with the intermediate frequency filtering amplifying circuit through the other detection circuit and the other amplitude limiting amplifying circuit in sequence.

4. The channel module according to claim 1, wherein the if filter amplifier circuit comprises a low noise filter amplifier circuit, a first if processing circuit and a second if processing circuit connected in sequence to the service module;

the low-noise filtering amplifying circuit is respectively connected with the first reconfigurable filter bank, the second reconfigurable filter bank and the digital control circuit; the first intermediate frequency processing circuit is respectively connected with the digital control circuit and the frequency synthesis circuit; the second intermediate frequency processing circuit is respectively connected with the digital control circuit and the frequency synthesis circuit.

5. The channel module according to claim 4, wherein the first IF processing circuit comprises a first IF filter bank, a first up-down amplifying circuit, and a first mixer connected to the frequency synthesizing circuit; the second intermediate frequency processing circuit comprises a second intermediate frequency filter bank, a second uplink and downlink amplifying circuit and a second mixer connected with the frequency synthesis circuit;

the first mixer is respectively connected with the low-noise filtering and amplifying circuit, the first intermediate frequency filter bank and the second intermediate frequency filter bank; the first intermediate frequency filter bank is connected with the first uplink and downlink amplifying circuit; the first uplink and downlink amplifying circuit is connected with the second frequency mixer; the second mixer is connected with the second intermediate frequency filter bank; the second intermediate frequency filter bank is connected with the second uplink and downlink amplifying circuit; the second uplink and downlink amplifying circuit is used for connecting the service module.

6. A transceiver, comprising a control module, a service module, the channel module according to any one of claims 1 to 5, and a power amplifier module, which are connected in sequence;

the power amplifier module is also used for connecting an antenna.

7. The transceiver of claim 6, wherein the service module comprises a clock management circuit, an intermediate frequency digitizing circuit, and a service SOC coupled to the control module;

8. The transceiver of claim 7, wherein the traffic SOC is a multi-core heterogeneous SOC;

the service module also comprises an LPDDR and a flash memory; the LPDDR and the flash memory are both connected to the traffic SOC.

9. The transceiver of claim 6, wherein the control module comprises a control SOC, an audio processing circuit, a display device, a control device, and an ethernet circuit;

the control SOC is respectively connected with the audio processing circuit, the display device, the control device, the Ethernet circuit and the service module.

10. The transceiver of claim 9, wherein the control module further comprises an LPDDR, a flash memory, and a wireless communication module; the LPDDR, the flash memory and the wireless communication module are all connected with the control SOC.

11. The transceiver of claim 6, wherein the number of the service modules, the power amplifier modules and the channel modules is plural;

each business module is connected with the control module; the plurality of service modules are connected with the plurality of channel modules in a one-to-one correspondence manner; the plurality of channel modules are connected with the plurality of power amplifier modules in a one-to-one correspondence manner.

12. A transceiver according to any one of claims 6 to 11, wherein the transceiver further comprises a power supply module; the power module is respectively connected with the control module, the service module, the power amplifier module and the channel module.

13. A communication system comprising a transceiver as claimed in any one of claims 6 to 12.