CN111769847B - Radio wave receiving and transmitting method and system - Google Patents
Radio wave receiving and transmitting method and system Download PDFInfo
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- CN111769847B CN111769847B CN201910184117.2A CN201910184117A CN111769847B CN 111769847 B CN111769847 B CN 111769847B CN 201910184117 A CN201910184117 A CN 201910184117A CN 111769847 B CN111769847 B CN 111769847B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
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Abstract
The invention discloses a method and a system for transmitting and receiving radio waves, relates to the technical field of communication, and aims to solve the problems that in the prior art, a broadband transceiver has numerous discrete devices, is complex in design, large in equipment size and power consumption, and small in frequency range for transmitting and receiving radio waves. The method comprises the following steps: the method comprises the steps that corresponding extended frequency band signals are received through at least one frequency band extension module, the extended frequency band signals are subjected to frequency mixing processing and then transmitted to a radio transceiver for demodulation and analog-to-digital conversion, then processing is carried out, the transmitted signals are subjected to digital-to-analog conversion and modulation through the radio transceiver and then transmitted to the corresponding frequency band extension module, frequency mixing processing is carried out on the transmitted signals to form extended frequency band signals, and the radio transceiver supports receiving and transmitting of basic frequency band signals.
Description
Technical Field
The present invention relates to the field of wireless communication technologies, and in particular, to a method and a system for transmitting and receiving radio waves.
Background
Due to the rapid development of ultrashort wave and microwave communications for military and civilian use, resources in the ultrashort wave and microwave frequency bands have become scarce. On the premise of ensuring the smoothness and confidentiality of communication, the ultra-wideband communication gradually draws attention of people, and the ultra-wideband communication has a wide market in the aspects of high utilization rate, miniaturization, good confidentiality, low cost and the like.
Especially in the military aspect, due to the high frequency spectrum utilization rate and the strong anti-interference performance of the broadband transceiver, the broadband transceiver has the outstanding effects of reducing the interference of the anti-radiation missile on the radar, improving the response speed of an early warning mechanism, improving the precision of a ballistic missile, reducing the response time of the missile and the like. Existing broadband transceivers covering 30-6000 MHz are all built by using discrete components, a superheterodyne architecture is generally adopted, a receiving link is divided into four channels of 30-88 MHz, 88-512 MHz, 512M-3 GHz and 3-6 GHz, respective frequency bands are respectively converted into 140MHz intermediate frequency signals, and the intermediate frequency signals are finally sent to a four-channel analog-to-digital converter; similarly, the transmitting link is also divided into four channels of 30-88 MHz, 88-512 MHz, 512M-3 GHz and 3-6 GHz, the four channels respectively convert the 140MHz intermediate frequency signals transmitted by the digital-to-analog converter into respective frequency bands, and finally transmit the frequency bands to the air interface through the antenna.
In order to solve the above problems, a highly integrated transceiver chip has been used to significantly reduce the size of the transceiver, but the transceiver chip can only transmit and receive signals of 70-6000 MHz, and the frequency band range for transmitting and receiving radio waves is small.
In summary, the broadband transceiver has many discrete devices in the radio wave transceiving, the design is complicated, the device size and power consumption are large, or when the transceiver chip is used as the transceiver, the frequency band range for transceiving the radio wave is small.
Disclosure of Invention
The invention provides a radio wave transmitting and receiving method and a radio wave transmitting and receiving system, which are used for solving the problems that in the prior art, a broadband transceiver has numerous discrete devices, is complex in design, has larger equipment size and power consumption, and has a smaller frequency range for transmitting and receiving radio waves.
In a first aspect, the present invention provides a radio wave transceiving system including a transceiver supporting reception and transmission of a fundamental frequency band signal, the system comprising:
the frequency band extension module is used for receiving corresponding extension frequency band signals, performing frequency mixing processing on the extension frequency band signals to obtain intermediate frequency signals, and then transmitting the intermediate frequency signals to a radio transceiver, or receiving intermediate frequency signals output by the radio transceiver, and performing frequency mixing processing on the intermediate frequency signals to obtain extension frequency band signals;
the transceiver is further configured to receive an intermediate frequency signal sent by each frequency band extension module, demodulate and perform analog-to-digital conversion on the intermediate frequency signal, or send an intermediate frequency signal obtained by performing digital-to-analog conversion and modulation on a transmission signal to a corresponding frequency band extension module, where a frequency band of the intermediate frequency signal is a subset of a frequency band of the basic frequency band signal.
In the radio wave receiving and transmitting system, the mode of combining the extension frequency band signal and the radio receiving and transmitting dual-purpose machine is utilized, so that the receiving and transmitting of the extension frequency band signal outside the basic frequency band signal are realized, a plurality of discrete devices of the broadband receiving and transmitting machine are simplified, and the resource waste is reduced.
In an optional implementation manner, the frequency band extending module includes:
the frequency source module comprises a first frequency source and a second frequency source, wherein the first frequency source is connected with the transmitting mixer and used for providing a first source signal required by the frequency mixing processing, and the second frequency source is connected with the receiving mixer and used for providing a second source signal required by the frequency mixing processing; when the first frequency source and the second frequency source are different frequency sources, the frequency source module provides a source signal required by frequency mixing processing in a Frequency Division Duplex (FDD) mode;
the receiving mixer receives an extended frequency band signal, performs frequency mixing processing on the extended frequency band signal by using the first source signal to obtain an intermediate frequency signal, and sends the intermediate frequency signal to a filter;
and the filter is used for filtering the intermediate frequency signal output by the mixer and outputting the intermediate frequency signal to the transceiver, or filtering the intermediate frequency signal output by the transceiver and outputting the intermediate frequency signal to the mixer module.
In the radio wave transceiving system, the frequency source module can perform frequency mixing operation on signals in a Time Division Duplex (TDD) mode and a Frequency Division Duplex (FDD) mode according to source signals provided by the first frequency source and the second frequency source, so that the work of respectively establishing the signal transceiving systems of a plurality of corresponding devices for the transceiving work of the signals in the TDD mode and the FDD mode is omitted, the cost for constructing the system is reduced, the space resources occupied by the system are saved, the transceiving work of the signals in different modes can be completed by only one system, and the efficiency of signal transceiving is improved.
In an alternative embodiment, the minimum frequency value of the at least one extension band is greater than the maximum frequency value of the base band, and/or the maximum frequency value of the at least one extension band is less than the minimum frequency value of the base band.
In an alternative embodiment, the system further comprises:
and the front-end processing module is used for outputting the basic frequency band signal/the extended frequency band signal received from the antenna to the radio transceiver/the frequency band extension module after out-of-band filtering and power amplification processing, or receiving the basic frequency band signal/the extended frequency band signal output by the frequency band extension module, and transmitting the basic frequency band signal/the extended frequency band signal through the antenna after filtering and signal amplification.
In an alternative embodiment, the front-end processing module comprises:
the switch filter bank is used for carrying out-of-band filtering on a basic frequency band signal/an extended frequency band signal received in a Time Division Duplex (TDD) mode and outputting the basic frequency band signal/the extended frequency band signal to the power amplifier, and the switch duplex bank is used for carrying out-of-band filtering on the basic frequency band signal/the extended frequency band signal received in a Frequency Division Duplex (FDD) mode and outputting the basic frequency band signal/the extended frequency band signal to the power amplifier;
the power amplifier is used for amplifying the power of the received basic frequency band signal/extended frequency band signal and outputting the amplified basic frequency band signal/extended frequency band signal to the filter;
the filter is used for filtering the received basic frequency band signal/extended frequency band signal, and transmitting the basic frequency band signal output by the radio transceiver/the extended frequency band signal output by the frequency band extension module to the drive amplifier after the filter processor;
the driving amplifier is used for amplifying the received basic frequency band signal/extended frequency band signal.
The front-end module is provided with the switch filter group and the switch duplex group respectively, so that the work of establishing a signal receiving and transmitting system of a plurality of corresponding devices for the receiving and transmitting work of the signals in the TDD mode and the FDD mode is omitted for the receiving and transmitting of the signals in the TDD mode and the FDD mode, the cost for constructing the system is reduced, the space resources occupied by the system are saved, the processing work of the signals in different modes can be completed by only one system, and the efficiency of receiving and transmitting the signals is improved.
In an alternative embodiment, the transceiver supports reception and transmission of fundamental frequency band signals by:
and receiving a basic frequency band signal, and carrying out frequency mixing processing, demodulation and analog-to-digital conversion on the basic frequency band signal, or carrying out digital-to-analog conversion, modulation and frequency mixing processing on a transmitting signal to obtain a basic frequency band signal for transmitting.
In a second aspect, the present invention provides a radio wave receiving method, including:
receiving corresponding extended frequency band signals through at least one frequency band extension module, mixing the extended frequency band signals into intermediate frequency signals, and transmitting the intermediate frequency signals to a radio transceiver;
receiving the intermediate frequency signals sent by each frequency band extension module through the radio transceiver, demodulating and processing the intermediate frequency signals after analog-to-digital conversion;
the radio transceiver is used for transmitting the intermediate frequency signals after digital-to-analog conversion and modulation of the transmission signals to a corresponding frequency band extension module;
receiving an intermediate frequency signal output by the wireless transceiver through at least one frequency band extension module, and carrying out frequency mixing processing on the intermediate frequency signal to obtain an extension frequency band signal for transmitting;
the transceiver supports reception and transmission of base band signals, the frequency bands of the intermediate frequency signals being a subset of the frequency bands of the base band signals.
In an alternative embodiment, the extended frequency band signal is mixed to an intermediate frequency signal and then transmitted to a transceiver, comprising:
and carrying out frequency mixing processing on the extended frequency band signal by using a source signal with a preset frequency to obtain an intermediate frequency signal, and filtering the intermediate frequency signal after the frequency mixing processing and transmitting the intermediate frequency signal to a radio transceiver.
In an optional implementation manner, the intermediate frequency signal is filtered, and the filtered intermediate frequency signal is mixed by using a source signal with a preset frequency to be an extended frequency band signal and then transmitted.
In an alternative embodiment, the minimum frequency value of the at least one extension band is greater than the maximum frequency value of the base band, and/or the maximum frequency value of the at least one extension band is less than the minimum frequency value of the base band.
In an alternative embodiment, the method further comprises:
the basic frequency band signal/the extended frequency band signal received from the antenna is subjected to out-of-band filtering and power amplification processing through a front-end processing module and then output to the radio transceiver/frequency band extension module;
and receiving the basic frequency band signal output by the radio transceiver/the radio frequency signal output by the frequency band expansion module, and transmitting the radio frequency signal through an antenna after filtering and signal amplification.
In an alternative embodiment, reception and transmission of fundamental frequency band signals is supported by:
and receiving the basic frequency band signal through the radio transceiver, and processing the basic frequency band signal after frequency mixing processing, demodulation and analog-to-digital conversion, or transmitting the basic frequency band signal obtained after the transmission signal is subjected to digital-to-analog conversion, modulation and frequency mixing processing through the radio transceiver.
In an optional implementation, the base band signal includes: 88-512 MHz frequency band signals, 512 MHz-3 GHz frequency band signals and 3-6 GHz frequency band signals.
In an alternative embodiment, the one of the extension band signals is an ultra low frequency band signal smaller than 88MHz, and/or the one of the extension band signals is an ultra high frequency band signal higher than 6 GHz.
In a third aspect, the present application also provides a computer storage medium having a computer program stored thereon, which when executed by a processing unit, performs the steps of the method of the first aspect.
In addition, for technical effects brought by any one implementation manner of the second aspect and the third aspect, reference may be made to technical effects brought by different implementation manners of the first aspect, and details are not described here.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic diagram of a radio wave transceiving system according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a frequency band extension module according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a front-end processing module according to an embodiment of the present invention;
fig. 4 is a complete schematic diagram of a radio wave transceiving system according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a method for receiving a radio wave signal according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a method for transmitting a radio wave signal according to an embodiment of the present invention;
fig. 7 is a schematic diagram of a transceiver system according to a second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Some of the words that appear in the text are explained below:
the term "and/or" in the embodiments of the present invention describes an association relationship of associated objects, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
The application scenario described in the embodiment of the present invention is for more clearly illustrating the technical solution of the embodiment of the present invention, and does not form a limitation on the technical solution provided in the embodiment of the present invention, and it can be known by a person skilled in the art that with the occurrence of a new application scenario, the technical solution provided in the embodiment of the present invention is also applicable to similar technical problems. In the description of the present invention, the term "plurality" means two or more unless otherwise specified.
At present, the prevailing radio frequency transceiver chip in the industry comprises a plurality of series, wherein the frequency band of the transceiver chip with the widest frequency range is 70-6000 MHz, but 30-70M ultrashort wave frequency bands are not supported, and the frequency band range for receiving and transmitting radio waves is smaller.
Therefore, the embodiment of the invention provides a method and a system for transmitting and receiving radio waves.
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
With respect to the above scenario, the following describes an embodiment of the present invention in further detail with reference to the drawings of the specification.
The first embodiment is as follows:
as shown in fig. 1, the present embodiment provides a radio wave transceiving system including a transceiver 101 supporting reception and transmission of a fundamental frequency band signal, the system including:
at least one frequency band extension module 102, configured to receive a corresponding extended frequency band signal, and transmit the extended frequency band signal to a radio transceiver after performing frequency mixing processing on the extended frequency band signal to obtain an intermediate frequency signal, or receive an intermediate frequency signal output by the radio transceiver and transmit the intermediate frequency signal after performing frequency mixing processing on the intermediate frequency signal to obtain an extended frequency band signal;
the transceiver 101 is further configured to receive an intermediate frequency signal sent by each frequency band extension module, demodulate and perform analog-to-digital conversion on the intermediate frequency signal, or send an intermediate frequency signal obtained by performing digital-to-analog conversion and modulation on a transmission signal to a corresponding frequency band extension module, where a frequency band of the intermediate frequency signal is a subset of a frequency band of the basic frequency band signal.
In the radio wave receiving and transmitting system, the mode of combining the extension frequency band signal and the radio receiving and transmitting dual-purpose machine is utilized, so that the receiving and transmitting of the extension frequency band signal outside the basic frequency band signal are realized, a plurality of discrete devices of the broadband receiving and transmitting machine are simplified, and the resource waste is reduced.
As shown in fig. 2, in an optional implementation manner, the frequency band extending module 102 includes:
a frequency source module 103, including a first frequency source 103a and a second frequency source 103b, the first frequency source being connected to the transmitting mixer 104a for providing a first source signal required for the mixing process, the second frequency source being connected to the receiving mixer 104b for providing a second source signal required for the mixing process; when the first frequency source and the second frequency source are different frequency sources, the frequency source module provides a source signal required by frequency mixing processing in a Frequency Division Duplex (FDD) mode;
a mixer module 104, including a receiving mixer 104b and a transmitting mixer 104a, wherein the receiving mixer 104b receives an extended frequency band signal, mixes the extended frequency band signal with the first source signal to obtain an intermediate frequency signal, and transmits the intermediate frequency signal to a filter 105, and the transmitting mixer 104a receives the intermediate frequency signal output by the filter 105, mixes the intermediate frequency signal with the second source signal to obtain an extended frequency band signal, and transmits the extended frequency band signal;
a filter 105, for filtering the intermediate frequency signal outputted from the mixer module 104 and outputting the filtered intermediate frequency signal to the transceiver 101, or filtering the intermediate frequency signal outputted from the transceiver 101 and outputting the filtered intermediate frequency signal to the mixer module 104.
In an alternative embodiment, the minimum frequency value of the at least one extension band is greater than the maximum frequency value of the base band, and/or the maximum frequency value of the at least one extension band is less than the minimum frequency value of the base band.
In an alternative embodiment, as shown in fig. 1, the system further comprises:
a front-end processing module 106, configured to output the basic frequency band signal/extended frequency band signal received from the antenna 107 to the radio transceiver 101/frequency band extension module 102 after out-of-band filtering and power amplification, or receive the basic frequency band signal output by the radio transceiver/extended frequency band signal output by the frequency band extension module, and transmit the received signal through the antenna after filtering and signal amplification.
As shown in fig. 3, in an alternative embodiment, the front-end processing module 106 includes:
a switch filter bank 107a or a switch duplex bank 107b, where the switch filter bank 107a is configured to perform out-of-band filtering on a basic frequency band signal/an extended frequency band signal received in a TDD mode and output the result to the power amplifier, and the switch duplex bank 107b is configured to perform out-of-band filtering on a basic frequency band signal/an extended frequency band signal received in an FDD mode and output the result to the power amplifier;
a power amplifier 108 for performing power amplification on the received fundamental frequency band signal/extended frequency band signal and outputting the amplified signal to a filter 109;
a filter 109 for performing filtering processing on the received fundamental frequency band signal/extended frequency band signal, and transmitting the fundamental frequency band signal output by the transceiver/the extended frequency band signal output by the frequency band extension module to the power amplifier 108 after performing filtering processing on the fundamental frequency band signal/the extended frequency band signal;
as an alternative embodiment, the power amplifier 108 includes a driving amplifier 108a, a final amplifier 108b and a low noise amplifier 108c, wherein the driving amplifier 108a and the final amplifier 108b are configured to perform power amplification on the received basic band signal/extended band signal and output the amplified signal to the filter 109 when the transceiver transmits a wireless signal, and the low noise amplifier 108c is configured to perform power amplification on the received basic band signal/extended band signal and output the amplified signal to the filter 109 when the transceiver receives a wireless signal.
Fig. 4 is a complete diagram of a radio wave transceiving system according to an embodiment of the present invention.
In an optional implementation manner, the transceiver receives a basic frequency band signal and performs processing after performing frequency mixing processing, demodulation and analog-to-digital conversion on the basic frequency band signal, or transmits a basic frequency band signal obtained after performing digital-to-analog conversion, modulation and frequency mixing processing on a transmission signal.
Based on the same inventive concept of the above radio wave transceiving system, the present embodiment also provides a radio wave transceiving method;
as shown in fig. 5, upon receiving a radio wave signal, the method includes:
as shown in fig. 6, when transmitting a radio wave signal, the method includes:
the transceiver supports reception and transmission of signals in a basic frequency band, and processes signals in a Time Division Duplex (TDD) mode or a Frequency Division Duplex (FDD) mode, wherein the frequency band of the intermediate frequency signal is a subset of the frequency band of the basic frequency band signal.
In an alternative embodiment, the minimum frequency value of the at least one extension band is greater than the maximum frequency value of the base band, and/or the maximum frequency value of the at least one extension band is less than the minimum frequency value of the base band.
The following provides a specific method for transceiving radio waves by the radio transceiver system:
when receiving radio wave signal by using the above-mentioned radio transceiver system
1) Receiving fundamental frequency band signals
The front-end processing module carries out-of-band filtering and power amplification processing on the basic frequency band signal received from the antenna and outputs the basic frequency band signal to the radio transceiver;
the base frequency band signal is received by the radio transceiver, and the base frequency band signal is processed after frequency mixing processing, demodulation and analog-to-digital conversion.
2) Receiving extended frequency band signals
The front-end processing module carries out-of-band filtering and power amplification processing on the extended frequency band signal received from the antenna and then outputs the signal to the frequency band extension module;
receiving corresponding extended frequency band signals through at least one frequency band extension module, mixing the extended frequency band signals into intermediate frequency signals by using source signals with preset frequency, and transmitting the intermediate frequency signals to a radio transceiver;
and receiving the intermediate frequency signals sent by each frequency band extension module through the radio transceiver, demodulating and processing the intermediate frequency signals after analog-to-digital conversion.
When radio wave signal is transmitted by using the above radio transceiver system
1) Transmitting fundamental frequency band signals
Transmitting a basic frequency band signal obtained by performing digital-to-analog conversion, modulation and frequency mixing on a transmitting signal to a front-end processing module through the radio transceiver;
the front-end processing module is used for receiving the basic frequency band signal output by the radio transceiver, and the basic frequency band signal is transmitted out through an antenna after being subjected to filtering processing and signal amplification.
2) Transmitting extended frequency band signals
The radio transceiver transmits the intermediate frequency signal after the transmission signal is subjected to digital-to-analog conversion and modulation to a corresponding frequency band extension module;
receiving the intermediate frequency signal output by the wireless transceiver through at least one frequency band extension module, and performing frequency mixing processing on the intermediate frequency signal to obtain an extension frequency band signal by using a source signal with a preset frequency and transmitting the extension frequency band signal to a front-end processing module;
and the radio frequency signal output by the frequency band extension module is received through the front-end processing module, and is transmitted through an antenna after being subjected to filtering processing and signal amplification.
In an optional implementation manner, the basic frequency band signal includes: 88-512 MHz frequency band signals, 512 MHz-3 GHz frequency band signals and 3-6 GHz frequency band signals.
In an optional embodiment, the one of the extended band signals is an ultra low frequency band signal smaller than 88MHz, and/or the one of the extended band signals is an ultra high frequency band signal higher than 6 GHz.
Example two:
this embodiment provides a specific radio transceiver system and a specific implementation manner of transceiving radio waves thereof, in this embodiment, the fundamental frequency band signal includes: 88-512 MHz frequency band signals, 512 MHz-3 GHz frequency band signals, 3-6 GHz frequency band signals, the extended frequency band may include but is not limited to 30-88 MHz frequency band signals.
As shown in fig. 7, the transceiver system includes:
the filter 105 in the frequency band extension module is implemented by a ninth band-pass filter and a tenth band-pass filter, the transmitting mixer 104a and the transmitting mixer 104b, and the first frequency source 103a and the second frequency source 103b are implemented by frequency sources of 100 MHz;
the power amplifier 108 in the front-end processing module is implemented by using different driving amplifiers and final stage methods in each wireless signal transmitting channel, and is implemented by using different low noise amplifiers in each wireless signal receiving channel; the filter 109 in the front-end processing module is implemented by different filters in each wireless signal transmitting channel and each wireless signal receiving channel;
the radio transceiver system is specifically as follows:
1) the receiving channel of the 3-6 GHz frequency band signal comprises an antenna, a front-end processing module (a first switch filter bank/a first switch duplex bank, a first low-noise amplifier, a second low-noise amplifier and a second band-pass filter) and a transceiver (a transceiver circuit); the antenna comprises an antenna, a front-end processing module (a first switch filter bank/a first switch duplex bank, a first driving amplifier, a first final stage amplifier and a first band-pass filter) and a transceiver (a transceiver circuit) in a transmitting channel of a 3-6 GHz frequency band signal;
2) in a receiving channel of signals in a frequency range of 512MHz to 3GHz, the receiving channel comprises an antenna, a front-end processing module (a second switch filter bank/a second switch duplex bank, a third low-noise amplifier, a fourth low-noise amplifier and a fourth band-pass filter) and a transceiver (a transceiver circuit); in a transmitting channel of signals in a frequency range of 512MHz to 3GHz, the transmitting channel comprises an antenna, a front-end processing module (a second switch filter bank/a second switch duplex bank, a second driving amplifier, a second final stage amplifier and a third band-pass filter) and a transceiver (a transceiver circuit);
3) in a receiving channel of signals of 88-512 MHz frequency band, the receiving channel comprises an antenna, a front-end processing module (a third switch filter bank/a third switch duplex bank, a fifth low-noise amplifier and a sixth low-noise amplifier) and a transceiver (a transceiver circuit); in a transmitting channel of signals in 88-512 MHz frequency bands, the antenna, a front-end processing module (a third switch filter bank/a third switch duplex bank, a third driving amplifier, a third final amplifier and a fifth band-pass filter) and a transceiver (a transceiver circuit) are included;
4) in a receiving channel of a 30-88 MHz frequency band signal, the receiving channel comprises an antenna, a front-end processing module (a fourth switch filter group/a fourth switch duplex group, a seventh low-noise amplifier, an eighth low-noise amplifier and an eighth band-pass filter), a frequency band expanding module (a tenth band-pass filter and a second mixer module) and a transceiver (a transceiver circuit); the transmitting channel of the 30-88 MHz frequency band signal comprises an antenna, a front-end processing module (a fourth switch filter group/a fourth switch duplex group, a fourth driving amplifier, a fourth final amplifier and a seventh band-pass filter), a frequency band expanding module (a first mixer module and a ninth band-pass filter) and a transceiver (a transceiver circuit).
(II) receiving radio wave signal by using the transceiver system
1) Receiving basic frequency band signal (88 to 512MHz frequency band signal, 512MHz to 3GHz frequency band signal, 3 to 6GHz frequency band signal)
When 3-6 GHz frequency band signals are received in a receiving channel of the 3-6 GHz frequency band signals, a first switch filter/first switch duplexer group filters the wireless signals with external blockage, the wireless signals are amplified in signal power through a first low-noise amplifier and a second low-noise amplifier, then the wireless signals are filtered by a second band-pass filter, a transceiver chip amplifies and filters the filtered wireless signals once, a demodulator is used for performing quadrature demodulation on the wireless signals to output signals of an I path and a Q path, and finally, an analog-to-digital converter is used for sampling IQ signals and then transmitting the IQ signals to an FPGA circuit.
The working flow of receiving the 88-512 MHz band signal in the receiving channel of the 88-512 MHz band signal and receiving the 512 MHz-3 GHz band signal in the receiving channel of the 512 MHz-3 GHz band signal is the same as the working flow of receiving the 3-6 GHz band signal in the receiving channel of the 3-6 GHz band signal.
2) Receiving extension frequency signal (30 ~ 88MHz frequency signal)
When receiving a 30-88 MHz frequency band signal in a receiving channel of the 30-88 MHz frequency band signal, the wireless signal passes through a fourth switch filter group/a fourth switch duplex group to complete filtering with external blockage, then enters a seventh low-noise amplifier and an eighth low-noise amplifier to amplify the signal power, then passes through an eighth band-pass filter to filter nonlinear spurious caused by the low-noise amplifier, then enters a second mixer to mix with a 100MHz frequency source to generate a 130-188 MHz signal, then passes through a tenth band-pass filter to filter spurious signals generated by the mixer, finally enters a transceiver receiving channel to further amplify and filter the wireless signal, finally completes quadrature demodulation of the signal, generates an I path and a Q path signal, and sends the signal to an FPGA circuit after completing sampling of the signal by an analog-to-digital converter.
(III) transmitting radio wave signals by using the radio transceiver system
1) Transmitting basic frequency band signal (88 to 512MHz frequency band signal, 512MHz to 3GHz frequency band signal, 3 to 6GHz frequency band signal)
When a 3-6 GHz frequency band signal is transmitted in a transmission channel of the 3-6 GHz frequency band signal, an FPGA outputs a zero-frequency orthogonal I path signal and a zero-frequency orthogonal Q path signal to a transceiver circuit through an LVDS parallel interface, an IQ signal completes digital signal sampling inside the transceiver to generate analog IQ data, then a conversion link and an up-conversion link from the IQ signal to a single-ended radio frequency signal are completed through an orthogonal modulator, the IQ data are transmitted to a front-end processing module through filtering and amplification, in the front-end processing module, the IQ data are firstly filtered through a first band-pass filter/a first switch duplex bank, then transmitted to a first driving amplifier and a first driving amplifier to complete signal amplification, and finally transmitted to the first switch filter bank and then transmitted through an antenna.
The working process of transmitting the 88-512 MHz frequency band signal in the transmitting channel of the 88-512 MHz frequency band signal and transmitting the 512 MHz-3 GHz frequency band signal in the transmitting channel of the 512 MHz-3 GHz frequency band signal is the same as the working process of transmitting the 3-6 GHz frequency band signal in the transmitting channel of the 3-6 GHz frequency band signal.
2) Transmitting extension frequency signal (30 ~ 88MHz frequency signal)
When a 30-88 MHz frequency band signal is transmitted in a transmitting channel of the 30-88 MHz frequency band signal, an FPGA outputs a zero-frequency orthogonal I path and Q path signal to a transceiver circuit through an LVDS parallel interface, the IQ signal completes the sampling of a digital signal in the transceiver to generate analog IQ data, then completes the conversion from the IQ signal to a single-ended radio frequency signal through a quadrature modulator and an up-conversion link to generate a 130-188 MHz radio frequency signal, then transmits the 130-188 MHz radio frequency signal to a front-end processing module through filtering and amplification, in the front-end processing module, firstly passes through a ninth band-pass filter, filters the 130-188 MHz signal and a 100MHz frequency source to generate a 30-88 MHz ultrashort wave signal, passes through a seventh band-pass filter to filter transmission spurious emission, passes through a fourth driving amplifier and a fourth final amplifier to be amplified to a rated power and then transmitted to a fourth switch filter bank for a fourth switch duplex bank, and finally, the data is sent to an air interface through an antenna.
The present application is described above with reference to block diagrams and/or flowchart illustrations of methods, apparatus (systems) and/or computer program products according to embodiments of the application. It will be understood that one block of the block diagrams and/or flowchart illustrations, and combinations of blocks in the block diagrams and/or flowchart illustrations, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, and/or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer and/or other programmable data processing apparatus, create means for implementing the functions/acts specified in the block diagrams and/or flowchart block or blocks.
Accordingly, the subject application may also be embodied in hardware and/or in software (including firmware, resident software, micro-code, etc.). Furthermore, the present application may take the form of a computer program product on a computer-usable or computer-readable storage medium having computer-usable or computer-readable program code embodied in the medium for use by or in connection with an instruction execution system. In the context of this application, a computer-usable or computer-readable medium may be any medium that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (13)
1. A radio wave transmission/reception system including a transceiver supporting reception and transmission of a signal of a fundamental frequency band, comprising:
the system comprises a plurality of frequency band extension modules, a radio transceiver and a radio transceiver, wherein the frequency band extension modules are used for receiving corresponding extension frequency band signals, transmitting the extension frequency band signals to the radio transceiver after frequency mixing processing is carried out on the extension frequency band signals to obtain intermediate frequency signals, or receiving the intermediate frequency signals output by the radio transceiver and transmitting the intermediate frequency signals after frequency mixing processing is carried out on the intermediate frequency signals to obtain extension frequency band signals;
the transceiver is further configured to receive an intermediate frequency signal sent by each frequency band extension module, demodulate and perform analog-to-digital conversion on the intermediate frequency signal, or send an intermediate frequency signal obtained by performing digital-to-analog conversion and modulation on a transmission signal to a corresponding frequency band extension module, where a frequency band of the intermediate frequency signal is a subset of a frequency band of the basic frequency band signal;
wherein the base band signal comprises: 88-512 MHz frequency band signals, 512 MHz-3 GHz frequency band signals and 3-6 GHz frequency band signals.
2. The system of claim 1, wherein the band extension module comprises:
the frequency source module comprises a first frequency source and a second frequency source, wherein the first frequency source is connected with the transmitting mixer and used for providing a first source signal required by the frequency mixing processing, and the second frequency source is connected with the receiving mixer and used for providing a second source signal required by the frequency mixing processing; when the first frequency source and the second frequency source are different frequency sources, the frequency source module provides a source signal required by frequency mixing processing in a Frequency Division Duplex (FDD) mode;
the receiving mixer receives an extended frequency band signal, performs frequency mixing processing on the extended frequency band signal by using the first source signal to obtain an intermediate frequency signal, and sends the intermediate frequency signal to a filter;
and the filter is used for filtering the intermediate frequency signal output by the mixer and outputting the intermediate frequency signal to the transceiver, or filtering the intermediate frequency signal output by the transceiver and outputting the intermediate frequency signal to the mixer module.
3. The system of claim 1, wherein the minimum frequency value of at least one of the extension bands is greater than the maximum frequency value of the base band, and/or wherein the maximum frequency value of at least one of the extension bands is less than the minimum frequency value of the base band.
4. The system of claim 1, further comprising:
and the front-end processing module is used for outputting the basic frequency band signal/the extended frequency band signal received from the antenna to the radio transceiver/the frequency band extension module after out-of-band filtering and power amplification processing, or receiving the basic frequency band signal/the extended frequency band signal output by the frequency band extension module, and transmitting the basic frequency band signal/the extended frequency band signal through the antenna after filtering and signal amplification.
5. The system of claim 4, wherein the front-end processing module comprises:
the switch filter bank is used for carrying out-of-band filtering on a basic frequency band signal/an extended frequency band signal received in a Time Division Duplex (TDD) mode and outputting the basic frequency band signal/the extended frequency band signal to the power amplifier, and the switch duplex bank is used for carrying out-of-band filtering on the basic frequency band signal/the extended frequency band signal received in a Frequency Division Duplex (FDD) mode and outputting the basic frequency band signal/the extended frequency band signal to the power amplifier;
the power amplifier is used for amplifying the power of the received basic frequency band signal/extended frequency band signal and outputting the amplified basic frequency band signal/extended frequency band signal to the filter;
and the filter is used for filtering the received basic frequency band signal/extended frequency band signal, and transmitting the basic frequency band signal output by the transceiver/the extended frequency band signal output by the frequency band extension module to the power amplifier after being filtered by the filter processor.
6. The system of claim 1, wherein the transceiver supports reception and transmission of fundamental frequency band signals by:
and receiving a basic frequency band signal, and carrying out frequency mixing processing, demodulation and analog-to-digital conversion on the basic frequency band signal, or carrying out digital-to-analog conversion, modulation and frequency mixing processing on a transmitting signal to obtain a basic frequency band signal for transmitting.
7. A radio wave transmission/reception method, comprising:
receiving corresponding extended frequency band signals through a plurality of frequency band extension modules, mixing the extended frequency band signals into intermediate frequency signals, and transmitting the intermediate frequency signals to a radio transceiver;
receiving the intermediate frequency signals sent by each frequency band extension module through the radio transceiver, demodulating and processing the intermediate frequency signals after analog-to-digital conversion;
the radio transceiver is used for transmitting the intermediate frequency signals after digital-to-analog conversion and modulation of the transmission signals to a corresponding frequency band extension module;
receiving intermediate frequency signals output by the wireless transceiver through a plurality of frequency band extension modules, and carrying out frequency mixing processing on the intermediate frequency signals to form extension frequency band signals for transmission;
the transceiver supports reception and transmission of base band signals, wherein the frequency bands of the intermediate frequency signals are a subset of the frequency bands of the base band signals, the base band signals comprising: 88-512 MHz frequency band signals, 512 MHz-3 GHz frequency band signals and 3-6 GHz frequency band signals.
8. The method of claim 7, wherein mixing the extended band signal to an intermediate frequency signal for transmission to a transceiver comprises:
and carrying out frequency mixing processing on the extended frequency band signal by using a source signal with a preset frequency to obtain an intermediate frequency signal, and filtering the intermediate frequency signal after the frequency mixing processing and transmitting the intermediate frequency signal to a radio transceiver.
9. The method of claim 7, wherein mixing the intermediate frequency signal into an extended band signal transmission comprises:
and filtering the intermediate frequency signal, and performing frequency mixing processing on the filtered intermediate frequency signal by using a source signal with a preset frequency to obtain an extended frequency band signal and then transmitting the extended frequency band signal.
10. The method according to claim 7, wherein the minimum frequency value of at least one of the extension bands is greater than the maximum frequency value of the base band, and/or wherein the maximum frequency value of at least one of the extension bands is less than the minimum frequency value of the base band.
11. The method of claim 7, further comprising:
the basic frequency band signal/the extended frequency band signal received from the antenna is subjected to out-of-band filtering and power amplification processing through a front-end processing module and then output to the radio transceiver/frequency band extension module;
and receiving the basic frequency band signal output by the radio transceiver/the radio frequency signal output by the frequency band expansion module, and transmitting the radio frequency signal through an antenna after filtering and signal amplification.
12. The method of claim 7, wherein reception and transmission of fundamental frequency band signals is supported by:
and receiving the basic frequency band signal through the radio transceiver, and processing the basic frequency band signal after frequency mixing processing, demodulation and analog-to-digital conversion, or transmitting the basic frequency band signal obtained after the transmission signal is subjected to digital-to-analog conversion, modulation and frequency mixing processing through the radio transceiver.
13. The method of claim 7, wherein one of the extended band signals is an ultra low frequency band signal less than 88MHz and/or one of the extended band signals is an ultra high frequency band signal above 6 GHz.
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