CN118100975A

CN118100975A - Radio frequency signal processing method, circuit, communication device, equipment and storage medium

Info

Publication number: CN118100975A
Application number: CN202211461870.XA
Authority: CN
Inventors: 王珊; 江宇亭; 韦兆碧; 孟博; 杨云博
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2022-11-17
Filing date: 2022-11-17
Publication date: 2024-05-28
Also published as: WO2024104198A1

Abstract

The embodiment of the application provides a radio frequency signal processing method, a circuit, a communication device, equipment and a storage medium. By combining the signals of the TDD and the FDD in the digital domain, the combined signals are processed, and the signals of different frequency band modes share the digital and analog conversion unit, the radio frequency processing unit, the frequency selection unit and the antenna unit, so that the number of devices is reduced, and the volume and the power consumption of the radio frequency circuit are reduced.

Description

Radio frequency signal processing method, circuit, communication device, equipment and storage medium

Technical Field

The present application relates to the field of communications technologies, and in particular, to a radio frequency signal processing method, a circuit, a communication device, an apparatus, and a storage medium.

Background

Conventional multimode, multiband base stations are separate transceiver channels, i.e. each band signal is transmitted using a single transmit chain and each band signal is received using a single receive chain.

In the related art, because each frequency band signal is an independent transmitting link and receiving link, the number of radio frequency circuit components is large, the size is large, and the power consumption is high. How to realize miniaturization and low power consumption of radio frequency circuits is a problem to be discussed currently.

Disclosure of Invention

The embodiment of the application provides a radio frequency signal processing method, a circuit, a communication device, equipment and a storage medium, which aim to reduce the number of radio frequency circuit devices, reduce the circuit volume and reduce the power consumption.

In a first aspect, an embodiment of the present application provides a radio frequency signal processing method, where the method includes: acquiring at least two groups of baseband IQ signals, wherein at least one group of baseband IQ signals with different frequency bands and/or frequency band systems are TDD signals, and at least one group of baseband IQ signals are FDD signals; performing calibration compensation processing on the baseband IQ signal according to a feedback IQ signal to obtain a calibration signal, wherein the feedback IQ signal is acquired through a feedback link; and performing frequency shift combining processing on at least two groups of calibration signals to obtain a combined signal.

In a second aspect, an embodiment of the present application provides a radio frequency circuit, including: the digital processing unit is used for carrying out calibration compensation processing on the acquired at least two groups of baseband IQ signals according to the feedback IQ signals to obtain calibration signals; the digital processing unit is also used for carrying out frequency shift combining processing on at least two groups of calibration signals to obtain a combined signal; wherein at least one group of baseband IQ signals is a TDD signal, and at least one group of baseband IQ signals is an FDD signal; and the feedback link is used for sampling the analog emission signal to obtain the feedback IQ signal.

In a third aspect, embodiments of the present application provide a communications apparatus comprising a radio frequency circuit as in the second aspect.

In a fourth aspect, an embodiment of the present application provides an electronic device, including: a memory, a processor and a computer program stored on the memory and executable on the processor, the processor implementing the radio frequency signal processing method as in the first aspect when the computer program is executed.

In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores computer-executable instructions, where the computer-executable instructions implement the radio frequency signal processing method as in the first aspect when the computer program is executed.

In a sixth aspect, an embodiment of the present application provides a computer program product, including a computer program or computer instructions stored in a computer readable storage medium, from which a processor of a computer device reads the computer program or the computer instructions, the processor executing the computer program or the computer instructions, causing the computer device to perform the radio frequency signal processing method as in the first aspect described above.

According to the embodiment of the application, the TDD signal and the FDD signal are combined in the digital domain, the combined signal is processed, and the signals with different frequency band modes share the digital and analog conversion unit, the radio frequency processing unit, the frequency selection unit and the antenna unit, so that the number of devices is reduced, and the volume and the power consumption of the radio frequency circuit are reduced.

Drawings

FIG. 1 is a schematic diagram of a related art RF circuit;

FIG. 2 is a schematic diagram of a radio frequency circuit according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a radio frequency circuit according to another embodiment of the present application;

FIG. 4 is a schematic diagram of a radio frequency circuit according to another embodiment of the present application;

FIG. 5 is a schematic diagram of a radio frequency circuit for a three band combining circuit according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a dual band combining RF circuit according to an embodiment of the present application;

fig. 7 is a flowchart of a method for processing a radio frequency signal according to an embodiment of the present application;

fig. 8 is a flowchart of a method for processing a radio frequency signal according to another embodiment of the present application;

Fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application.

Detailed Description

The present application will be described in further detail with reference to the drawings and examples, in order to make the objects, technical methods and advantages of the present application more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.

It should be noted that although a logical order is illustrated in the flowchart, in some cases, the steps illustrated or described may be performed in an order different from that in the flowchart. The terms first, second and the like in the description and in the claims and in the above-described figures, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

In the description of the embodiments of the present application, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly, and those skilled in the art may reasonably determine the specific meaning of the terms in the embodiments of the present application in combination with the specific contents of the technical solutions. In embodiments of the application, the words "further," "exemplary," or "optionally," etc. are used to indicate by way of example, illustration, or description, and should not be construed as preferred or advantageous over other embodiments or designs. The use of the words "further," "exemplary," or "optionally" and the like is intended to present the relevant concepts in a concrete fashion.

In the related art, multimode and multiband base stations are implemented by adopting separate transceiver channels, as shown In fig. 1, a baseband processing unit (Building Base band Unit, BBU) transmits baseband IQ signals to a remote radio unit (Radio Remote Unit, RRU), where the IQ signals are homodromous Quadrature signals, I is In-Phase, Q is Quadrature (Phase shift 90 degrees), that is, signals representing that two paths of signals are 90 degrees out of Phase. The transmit chain workflow of the radio frequency circuits in the RRU is as follows: and carrying out digital processing on the received baseband IQ signal through a digital processing unit, carrying out digital-to-analog conversion on the processed signal through a digital-to-analog conversion unit to obtain an analog signal, then sending the analog signal to a radio frequency processing unit for carrying out post-stage radio frequency processing, and finally, filtering the radio frequency processed signal through a frequency selection unit and then transmitting the signal through an antenna unit. The receive chain workflow of the radio frequency circuit is as follows: the antenna unit receives signals, the signals are filtered by the frequency selection unit and then delivered to the radio frequency processing unit for radio frequency processing, the signals after radio frequency processing enter the digital and analog conversion unit and are converted into digital signals, the digital signals are processed by the digital processing unit, and the processed digital signals are transmitted to the BBU.

Since each band (frequency band) needs a separate transmitting link and receiving link, as shown in fig. 1, when 4 bands (band 1, band2, band3, band 4) are needed to transmit and receive, 4 transmitting links and4 receiving links are needed, 8 digital processing modules are needed by the digital processing unit, 4 digital-to-analog conversion modules and4 analog-to-digital conversion modules are needed by the digital and analog conversion unit, and 8 radio frequency processing modules are needed by the radio frequency processing unit. Therefore, the radio frequency circuit in the related technology has the problems of large number of devices, larger volume and higher power consumption.

The embodiment of the application provides a radio frequency signal processing method, a circuit, a communication device, equipment and a storage medium, wherein a plurality of signals share a digital and analog conversion unit, a radio frequency processing unit and an antenna unit by combining signals of different bands in a digital domain, so that the number of radio frequency circuit devices is reduced, the volume and the power consumption of a radio frequency circuit are reduced, and the volume and the power consumption of a multi-band base station transceiver are reduced.

Embodiments of the present application will be further described with reference to the accompanying drawings.

Fig. 2 is a schematic diagram of a radio frequency circuit according to an embodiment of the present application, which is applied to a base transceiver station. As shown in fig. 2, the radio frequency circuit according to the embodiment of the present application includes at least, but is not limited to: a digital processing unit and a feedback link.

The digital processing unit is used for carrying out calibration compensation processing on the acquired at least two groups of baseband IQ signals according to the feedback IQ signals to obtain calibration signals; the digital processing unit is also used for carrying out frequency shift combining processing on at least two groups of calibration signals to obtain a combined signal; wherein at least one baseband IQ signal is a time division duplex, TDD, signal and at least one baseband IQ signal is a frequency division duplex, FDD, signal; and the feedback link is used for sampling the analog emission signal to obtain a feedback IQ signal.

The digital processing unit combines the TDD and FDD signals to obtain a combined signal, the combined signal is transmitted to the digital and analog conversion unit to perform digital-to-analog conversion processing to obtain an analog combined signal, the analog combined signal is transmitted to the radio frequency processing unit, the analog combined signal is amplified by the transmitting amplification module and then subjected to branching processing to obtain a modulated TDD signal and an FDD signal for transmission, and the modulated TDD signal and the modulated FDD signal are filtered in the frequency selection unit and then transmitted by the corresponding antenna module in the antenna unit.

After the TDD signals and the FDD signals which are modulated and used for transmitting are obtained through branching processing, the TDD signals and the FDD signals which are used for transmitting are respectively sampled through a coupling module, sampling results are coupled and sent to a feedback link, feedback IQ signals of feedback IQ signals and feedback IQ signals of the FDD signals of the corresponding TDD signals are obtained through modulation processing of a switch selection module, an analog-to-digital conversion module and a digital processing module in the feedback link, the feedback IQ signals are transmitted in a data processing unit, and the digital processing unit performs predistortion compensation on baseband IQ signals of the corresponding link according to the feedback IQ signals. As shown in fig. 2, a module of the feedback link located in the digital processing unit transmits the feedback IQ signal obtained after processing to a module in the digital processing unit for performing digital processing on the baseband IQ signal, and performs calibration processing on the corresponding baseband IQ signal according to the feedback IQ signal to obtain a calibration signal.

According to the radio frequency circuit, the TDD signal and the FDD signal are combined and then the combined signal is processed, so that signals of different frequency band modes share one set of transmitting and receiving link, the number of radio frequency circuit devices is reduced, the size and the power consumption of the radio frequency circuit are reduced, and the size and the power consumption of a multi-band base station transceiver are reduced.

Fig. 3 is a schematic diagram of a radio frequency circuit according to another embodiment of the present application, which is applied to a base transceiver station. As shown in fig. 3, the radio frequency circuit of the embodiment includes a digital processing unit, a digital-to-analog conversion unit, a radio frequency processing unit, a frequency selection unit, an antenna unit, and a feedback link.

The digital processing unit is used for carrying out calibration compensation processing on the acquired at least two groups of baseband IQ signals according to the feedback IQ signals to obtain calibration signals; the digital processing unit is also used for carrying out combining processing on at least two groups of calibration signals to obtain a combined signal.

The digital-to-analog conversion unit is used for performing digital-to-analog conversion processing on the combined signal to obtain an analog combined signal.

The radio frequency processing unit is used for carrying out radio frequency amplification and branching processing on the analog combined signals to obtain at least two groups of analog transmission signals, wherein the analog transmission signals correspond to the baseband IQ signals one by one.

And the frequency selection unit is used for filtering at least two groups of analog transmission signals to obtain transmission signals.

An antenna unit for transmitting a transmission signal and receiving an original signal; wherein the original signal may include, but is not limited to, a mixed FDD and TDD signal.

And the feedback link is used for sampling the analog emission signal to obtain a feedback IQ signal.

Taking signals of two frequency bands of band1 and band2 as an example, wherein the signal corresponding to band1 is in a time division duplex (Time Division Duplexing, TDD) frequency band mode, the signal corresponding to band2 is in a frequency division duplex (Frequency Division Duplexing, FDD) frequency band mode, and the signal processing process during the transmission of a radio frequency circuit is as follows.

The digital processing unit receives the baseband 1 baseband IQ signal and the baseband 2 baseband IQ signal from the BBU, processes the two groups of baseband IQ signals respectively, then combines the signals to obtain a combined signal (band 1+band 2), transmits the combined signal to the digital-to-analog conversion unit for digital-to-analog conversion, converts the combined signal from the digital signal to the analog signal, and obtains an analog combined signal and transmits the analog combined signal to the radio frequency processing module; the transmission amplifying module in the radio frequency processing unit performs radio frequency amplification and branching processing on the analog combined signal to obtain an analog transmission signal corresponding to the band1 baseband IQ signal and an analog transmission signal corresponding to the band2 baseband IQ signal, and then (a group of analog combined signals) outputs two (the analog transmission signal of the band1 and the analog transmission signal of the band 2); the two groups of analog transmitting signals are transmitted to the frequency selection unit for filtering processing to obtain two transmitting signals, and the antenna unit transmits the two transmitting signals through one antenna module.

The feedback link comprises two coupling modules, a switch selection module, an analog-to-digital conversion module and a digital processing module, wherein the two coupling modules are respectively used for acquiring analog emission signals of band1 and analog emission signals of band2, coupling the acquired sample signals and transmitting the sample signals to the switch selection module of the feedback link (shown by a dotted arrow in fig. 3), the switch selection module selects the coupled sample signals and respectively transmits the sample signals of band1 and the sample signals of band2 to the analog-to-digital conversion module for analog-to-digital conversion, the sample signals converted into the analog signals are digitally processed through the digital processing module to respectively obtain feedback IQ signals of band1 and feedback IQ signals of band2, and the feedback IQ signals are used for carrying out calibration compensation processing on baseband IQ signals needing to be transmitted next time, and the influence caused by distortion and interference caused by sharing a radio frequency channel by a plurality of band signals is reduced through calibration and compensation of digital domains.

The signal processing at the time of reception of the radio frequency circuit is as follows.

The antenna unit receives an original signal and transmits the original signal to the frequency selection unit, the frequency selection unit filters the original signal to obtain a received signal of band1 and a received signal of band2, the received signal of band1 and the received signal of band2 are transmitted to the radio frequency processing unit, the radio frequency processing unit processes the received signal of band1 and the received signal of band2 respectively through two low noise amplifiers (Low Noise Amplifier, LNA) to obtain an amplified received signal of band1 and an amplified received signal of band2, the radio frequency processing unit performs a combining process on the amplified received signal of band1 and the amplified received signal of band2 to obtain a combined received signal, and transmits the combined received signal to the digital and analog conversion unit to perform analog-to-digital conversion, and the combined received signal is converted from the analog signal to a digital combined signal to be transmitted to the digital processing unit. The digital processing unit performs branching processing on the digital combined signal to obtain a received IQ signal of band1 and a received IQ signal of band2, and it can be understood that the received IQ signal of band1 can be transmitted to the IQ signal of band1 of the BBU after being processed by the receiving link, and the received IQ signal of band2 can be transmitted to the IQ signal of band2 of the BBU after being processed by the receiving link.

It will be appreciated that the above description is given by way of example of a combination of band1 and band2, and that the radio frequency circuit of the present application may comprise multiple sets of circuit arrangements such as the combination of band1 and band2 described above; as shown in fig. 3, the radio frequency circuit includes a circuit arrangement of two combined signal transceiving links, one is a combined transceiving link of band1 and band2, and the other is a combined transceiving link of band3 and band4, and the two groups share a set of feedback links.

The radio frequency circuit of the embodiment of the application processes the combined signal after combining the signals of different bands and/or the signals of different frequency band modes, and after combining the band signals of TDD and FDD, the transmitting link can share one digital-to-analog conversion module and one transmitting amplifying module, the receiving link can share one antenna module and one analog-to-digital conversion module; the signals share the digital and analog conversion unit, the radio frequency processing unit and the antenna unit, namely, the signals of different frequency band modes share one set of transmitting and receiving link, the number of radio frequency circuit devices is reduced, the volume and the power consumption of the radio frequency circuit are reduced, and the volume and the power consumption of the multi-band base station transceiver are reduced.

In some possible embodiments, the digital processing unit performs calibration compensation processing on the baseband IQ signal using a digital predistortion algorithm.

In some possible embodiments, the digital processing unit may further combine the three band signals, for example, combine the band1 signal, the band2 signal, and the band3 signal, and then perform signal processing on the combined signal.

In some possible embodiments, the digital processing unit may implement multi-band signal processing over a large bandwidth.

In an embodiment, the digital processing unit comprises at least two first digital oscillators and at least one combiner; the first digital oscillator is used for carrying out frequency shifting processing on the calibration signals, and the combiner is used for combining at least two groups of processed calibration signals to obtain combined signals.

Also taking band1 and band2 as examples, as shown in fig. 6, for the transmitting link, two digital oscillators (Numerically Controlled Oscillator, NCO) respectively frequency-shift the baseband IQ signal of band1 and the baseband IQ signal of band2, and then, through a combiner, combine the frequency-shifted baseband IQ signal of band1 and the baseband IQ signal of band2 to obtain a combined signal.

And the signals of different bands are frequency-shifted and then combined by utilizing multiple NCO, so that the combination of the different bands is realized, and the number of devices of a back-end link is saved.

In an embodiment, the digital processing unit comprises at least two second digital oscillators and at least one splitter; the splitter is used for splitting the digital combined signal to obtain at least two groups of digital received signals; the second digital oscillator is used for carrying out frequency shifting processing on the digital receiving signals to obtain receiving IQ signals, wherein the second digital oscillator corresponds to the digital receiving signals one by one.

Taking band1 and band2 as an example, as shown in fig. 6, for a receiving link, transmitting the digital combined signal to a digital processing unit, and performing splitting processing on the digital combined signal through a splitter to obtain a digital receiving signal of band1 and a digital receiving signal of band 2; and the two NCO respectively carry out frequency shifting processing on the digital receiving signals of the band1 and the digital receiving signals of the band2 to obtain receiving IQ signals of the band1 and receiving IQ signals of the band 2.

And the NCO is used for frequency shifting, so that the targeted transmission of signals of the concerned frequency band is realized, and the interface overhead is reduced.

In some possible embodiments, taking band1 and band2 as examples, the digital processing unit performs calibration compensation processing on the baseband IQ signal of band1 and the baseband IQ signal of band2 according to the feedback IQ signal of band1 and the feedback IQ signal of band2 acquired from the feedback link, so as to obtain a calibration signal of band1 and a calibration signal of band 2; the two digital oscillators respectively carry out frequency shifting on the calibration signal of the band1 and the calibration signal of the band2, and then carry out combining processing on the calibration signal of the band1 and the calibration signal of the band2 after frequency shifting through a combiner to obtain a combined signal.

In some possible embodiments, when signals of three frequency bands of band1, band2 and band3 are required to be combined, the digital processing unit comprises three digital oscillators and a combiner, frequency shifting processing is performed on the signals of band1, band2 and band3 respectively through the three digital oscillators, and then the signals after frequency shifting are combined through the combiner to obtain a combined signal; it will be appreciated that the number of digital oscillators is correspondingly increased when more frequency band signals need to be combined.

In some possible embodiments, when the signals of band1 and band2 need to be combined and the signals of band3 and band4 need to be combined, the digital processing unit includes four digital oscillators and two combiners, wherein two digital oscillators and one combiners are a group for processing the signals of band1 and band 2; the other two digital oscillators and one combiner are a group for processing the signals of band3 and band 4.

In one embodiment, the radio frequency processing unit comprises at least one frequency converter and at least one power amplification module; the frequency converter is used for carrying out frequency conversion processing on the analog combined signal, and the power amplification module is used for carrying out amplification processing and branching processing on the analog combined signal after the frequency conversion processing to obtain at least two groups of analog transmission signals.

Namely, one transmitting link of the radio frequency circuit comprises a frequency converter and a power amplifying module in a radio frequency processing unit, and a plurality of base signals are combined and then share one transmitting link for signal processing.

When the radio frequency circuit performs a combining process on signals of two bands, a combining process of band1 and band2 is taken as an example. The radio frequency processing unit receives an analog combined signal, wherein the analog combined signal is obtained by digital-to-analog conversion of a combined signal of band1 and band 2; the frequency converter in the radio frequency processing unit performs frequency conversion processing on the analog combined signal, and transmits the frequency-converted analog combined signal to the power amplification module, and the power amplification module performs frequency amplification processing and branching processing on the frequency-converted analog combined signal to obtain an analog transmission signal of band1 and an analog transmission signal of band2, and further (the analog combined signal) outputs two (the analog transmission signal of band1 and the analog transmission signal of band 2). It can be understood that one frequency converter and one power amplification module are a group, and when the radio frequency processing unit needs to process a plurality of analog combined signals, a corresponding number of frequency converters and power amplification modules are arranged; for example, when the radio frequency processing unit needs to process the analog combined signal combined by band1 and band2 and the analog combined signal combined by band3 and band4, two frequency converters and two power amplifiers are provided, wherein one pair of the frequency converters and the power amplifiers is used for processing the analog combined signal combined by band1 and band2, and the other pair of the frequency converters and the power amplifiers is used for processing the analog combined signal combined by band3 and band4, as shown in fig. 6.

The combined signals are processed through the frequency converter and the power amplification module, so that a group of devices are shared by a plurality of bases, and the number of the devices is reduced.

In another embodiment, the radio frequency processing unit includes at least one drive amplification module and at least one power amplification module; the driving amplification module is used for carrying out first amplification processing on the analog combined signal, and the power amplification module is used for carrying out second amplification processing and branching processing on the analog combined signal after the first amplification processing to obtain at least two groups of analog transmission signals.

Namely, one transmitting link of the radio frequency circuit comprises a driving amplifying module and a power amplifying module in a radio frequency processing unit, and a plurality of base signals are combined and then share one transmitting link for signal processing.

When the radio frequency circuit performs a combination process on signals of three bands, band1, band2 and band3 are taken as examples. As shown in fig. 5, the radio frequency processing unit receives an analog combined signal, where the analog combined signal is a combined signal of band1, band2 and band3, and the analog combined signal is obtained through digital-to-analog conversion; a driving amplification module in the radio frequency processing unit performs first amplification processing on the analog combined signal so that the analog combined signal can be transmitted to a power amplification module for final amplification. The power amplification module performs second amplification and branching treatment on the analog combined signal subjected to the first amplification treatment to obtain an analog transmission signal of band1, an analog transmission signal of band2 and an analog transmission signal of band3, and further (analog combined signal) outputs three (analog transmission signal of band1, analog transmission signal of band2 and analog transmission signal of band 3).

The combined signals are processed through the driving amplification module and the power amplification module, so that a group of devices are shared by a plurality of bases, and the number of the devices is reduced.

In an embodiment, the radio frequency processing unit includes at least one low noise amplifier, and the low noise amplifier is configured to amplify at least two sets of received signals, where frequency band systems of the received signals are the same.

That is, one receiving link of the radio frequency circuit includes at least one low noise amplifier in the radio frequency processing unit, where the low noise amplifier is configured to amplify at least two sets of received signals, where each received signal has the same frequency band system and is time division duplex (Time Division Duplexing, TDD) or frequency division duplex (Frequency Division Duplex, FDD).

Take band1 and band2 as examples, where both band1 and band2 belong to the TDD system. The antenna unit receives the original signal and transmits the original signal to the frequency selection unit, the frequency selection unit performs filtering processing on the original signal to obtain a received signal of band1 and a received signal of band2, and transmits the received signal to the radio frequency processing unit, and because both band1 and band2 belong to the TDD system, a low noise amplifier can be shared to amplify the received signal of band1 and the received signal of band2, so as to obtain an amplified received signal of band1 and an amplified received signal of band2, as shown in fig. 5.

The receiving signals of a plurality of bands in the same system share one LNA for amplification processing, so that the number of devices of a receiving link is further reduced, the volume of a radio frequency circuit is reduced, and the power consumption is reduced.

In some possible embodiments, a plurality of LNAs may be configured to amplify received signals of a plurality of bands, where the LNAs and bands are in one-to-one correspondence.

In another embodiment, the radio frequency processing unit comprises a first low noise amplifier, a second low noise amplifier and a switch selection module, wherein the switch selection module is connected with the second low noise amplifier; the first low-noise amplifier is used for amplifying the received signal of the FDD frequency band; the second low noise amplifier is used for amplifying the received signal of the TDD frequency band passing through the switch selection module.

In the radio frequency circuit of the two bands, a receiving link comprises a first LNA, a second LNA and a switch selection module in a radio frequency processing unit, and the first LNA and the second LNA respectively amplify received signals of the two bands; it will be appreciated that one receive link corresponds to a set of band combinations.

Take band1 and band2 as examples, where band1 belongs to the FDD system and band2 belongs to the TDD system. As shown in fig. 6:

the antenna unit receives an original signal and transmits the original signal to the frequency selection unit, and the frequency selection unit carries out filtering processing on the original signal to obtain a receiving signal of band1 and a receiving signal of band2 and transmits the receiving signals to the radio frequency processing unit; the receiving signal of the band1 is directly transmitted to the first LNA for amplification processing, and the receiving signal of the band2 is transmitted to the second LNA for amplification processing through the switch selection module, so that the amplified receiving signal of the band1 and the amplified receiving signal of the band2 are respectively obtained. And through the switch selection module, the received signal of the band1 and the received signal of the band2 are respectively amplified by the first LNA and the second LNA, namely, band signals of an FDD system and band signals of a TDD system are respectively amplified, so that a plurality of radio frequency signals of different systems and different frequency bands are combined.

In another embodiment, the radio frequency processing unit includes at least one low noise amplifier and at least one analog cancellation module, the analog cancellation module is used for performing analog cancellation processing on at least two sets of received signals, and the low noise amplifier is used for amplifying the received signals after the analog cancellation processing; wherein, the frequency band modes of the received signals are different.

I.e. in a two band combined radio frequency circuit, a receiving chain comprises an LNA and an analog cancellation module in the radio frequency processing unit, as shown in fig. 4.

Taking band1 and band2 as examples, wherein the frequency band modes of band1 and band2 are different. As shown in fig. 4:

The antenna unit receives an original signal and transmits the original signal to the frequency selection unit, and the frequency selection unit carries out filtering processing on the original signal to obtain a receiving signal of band1 and a receiving signal of band2 and transmits the receiving signals to the radio frequency processing unit; the received signal of band1 and the received signal of band2 share one LNA for amplification treatment, and because the frequency band systems of band1 and band2 are different, the signals are preprocessed through an analog cancellation module before the received signal of band1 and the received signal of band2 are transmitted to the LNA, so that the LNA is unsaturated and is not burnt.

In some possible embodiments, the radio frequency circuit further includes a cancellation feedback link, as shown in fig. 4, including a second coupling module, a second switch selection module, a feedback radio frequency processing module, an analog-to-digital conversion module, and a digital processing module. The second coupling module is used for sampling analog transmission signals in the transmission links (the transmission ends of the transmission amplifying modules), coupling the sampled sample signals in different transmission links and sending the sampled sample signals to the second switch selecting module, the second switch selecting module selects the coupled sample signals and then transmits the sample signals to the feedback radio frequency processing module for radio frequency amplifying processing, the feedback radio frequency processing module transmits processed sample signals corresponding to each transmission link to the analog-to-digital conversion module for analog-to-digital conversion, the converted digital sample signals are transmitted to the digital processing module for digital processing, and the digital processing result is used for the receiving link to counteract interference of TDD same-frequency transmission signals.

Fig. 7 is a flowchart of a radio frequency signal processing method according to an embodiment of the present application, which is applied to the radio frequency circuit of any one of the above embodiments. As shown in fig. 7, the radio frequency signal processing method of the present embodiment at least includes, but is not limited to, steps S2100, S2200, S2300, S2400, S2500, S2600.

Step S2100: at least two groups of baseband IQ signals are obtained, wherein the frequency bands and/or frequency band systems of the baseband IQ signals are different.

Step S2200: and performing calibration compensation processing on the baseband IQ signal according to the feedback IQ signal to obtain a calibration signal, wherein the feedback IQ signal is acquired through a feedback link.

Step S2300: and carrying out combining processing on at least two groups of calibration signals to obtain a combined signal.

Step S2400: and D/A conversion processing is carried out on the combined signal to obtain an analog combined signal.

Step S2500: and carrying out radio frequency amplification and branching treatment on the analog combined signals to obtain at least two groups of analog transmission signals, wherein the analog transmission signals correspond to the baseband IQ signals one by one.

Step S2600: and filtering at least two groups of analog transmission signals to obtain transmission signals.

Take the processing of the signals of two bands as an example, band1 and band2. As shown in fig. 3, receiving a baseband IQ signal of band1 and a baseband IQ signal of band2 sent by a BBU, performing calibration compensation processing on the baseband IQ signal of band1 according to a feedback IQ signal corresponding to band1 to obtain a calibration signal of band1, and performing calibration compensation processing on the baseband IQ signal of band2 according to a feedback IQ signal corresponding to band2 to obtain a calibration signal of band 2; the feedback IQ signals corresponding to the band1 are obtained after sampling the analog transmitting signals and transmitting signals of the band1 through a feedback link, and the feedback IQ signals corresponding to the band2 are obtained after sampling the analog transmitting signals and transmitting signals of the band2 through a feedback link. And (3) carrying out a combining process on the calibration signal of the band1 and the calibration signal of the band2 to obtain a combined signal (band 1+band 2), carrying out a digital-to-analog conversion process on the combined signal, and converting the combined signal from a digital signal to an analog signal to obtain an analog combined signal (band 1+band 2). And carrying out radio frequency amplification and branching treatment on the analog combined signal to obtain an analog transmission signal of band1 and an analog transmission signal of band2. And filtering the analog transmission signal of the band1 to obtain a transmission signal of the band1, and filtering the analog transmission signal of the band2 to obtain a transmission signal of the band2. And finally, transmitting the transmission signal of the band1 and the transmission signal of the band2 through the antenna.

It will be appreciated that the radio frequency signal processing method of the present application may also process signals of three or more different bands, and is not limited herein.

It can be understood that the radio frequency signal processing method according to the embodiment of the present application can process a set of signals, or can process multiple sets of signals, where a set of signals includes at least two signals of different bands.

According to the radio frequency signal processing method, the signals of different bands are combined and then the combined signals are processed, so that a plurality of signals share the digital and analog conversion unit, the radio frequency processing unit and the antenna unit, the number of radio frequency circuit devices is reduced, the volume and the power consumption of the radio frequency circuit are reduced, and the volume and the power consumption of a multi-band base station transceiver are reduced.

In some possible embodiments, before step S2200, the radio frequency signal processing method further includes at least, but is not limited to, the following steps: acquiring transmission IQ data according to a transmission signal; obtaining feedback data according to the analog transmitting signal; and confirming the feedback IQ signal according to the transmitted IQ data and the feedback data.

And through collecting feedback IQ signals, the signals corresponding to the bands are calibrated and compensated, and the influence caused by distortion and interference caused by sharing a radio frequency channel by a plurality of band signals is reduced.

In some possible embodiments, step S2300 includes at least, but is not limited to, the following steps: respectively carrying out frequency shifting treatment on at least two groups of calibration signals; and combining the calibration signals after the frequency shifting processing to obtain a combined signal. Taking the processing of the signals of two bands as an example, for example, band1 and band2, as shown in fig. 6, frequency shifting processing is performed on the calibration signal of band1 and the calibration signal of band2, and the processed calibration signal of band1 and the processed calibration signal of band2 are combined to obtain a combined signal (band 1+band 2).

In some possible implementations, as shown in fig. 8, fig. 8 is a flowchart of a radio frequency signal processing method according to another embodiment of the present application, which is applied to the radio frequency circuit of any one of the foregoing embodiments. As shown in fig. 8, the radio frequency signal processing method of the present embodiment at least includes, but is not limited to, steps S3100, S3200, S3300, S3400, S3500, S3600.

Step S3100: acquiring an original signal received by an antenna unit;

step S3200: filtering the original signals to obtain at least two groups of received signals, wherein the frequency bands and/or frequency band systems of the received signals are different;

step S3300: performing low-noise amplification processing on the received signal to obtain an amplified received signal;

Step S3400: combining the amplified received signals to obtain combined received signals;

Step S3500: performing analog-to-digital conversion processing on the combined received signal to obtain a digital combined signal;

Step S3600: and carrying out branching treatment on the digital combined signals to obtain at least two groups of received IQ signals, wherein the received IQ signals correspond to the received signals one by one.

Take the processing of the signals of two bands as an example, band1 and band2. As shown in fig. 3, an original signal sent by a terminal is received through an antenna, and the original signal is subjected to filtering processing to obtain a receiving signal of band1 and a receiving signal of band 2; performing low-noise amplification processing on the received signal of the band1 and the received signal of the band2 to obtain an amplified received signal of the band1 and an amplified received signal of the band 2; combining the amplified received signal of band1 and the amplified received signal of band2 to obtain a combined received signal (band 1+ band 2); analog-to-digital conversion is carried out on the combined received signal, and the combined received signal is converted into a digital signal from the analog signal, so that a digital combined signal is obtained; carrying out digital processing and branching processing on the digital combined signal in a digital domain to obtain a received IQ signal of band1 and a received IQ signal of band 2; and finally, transmitting the received IQ signal of the band1 and the received IQ signal of the band2 to the BBU.

According to the radio frequency signal processing method, the signals of different bands are combined and then the combined signals are processed, so that a plurality of signals share the digital and analog conversion unit and the antenna unit, the number of radio frequency circuit devices is reduced, the volume and the power consumption of the radio frequency circuit are reduced, and the volume and the power consumption of the multi-band base station transceiver are reduced.

In some possible embodiments, step S3600 includes at least, but is not limited to, the following steps: carrying out branching treatment on the digital combined signals to obtain at least two groups of digital received signals; and respectively carrying out frequency shifting treatment on at least two groups of digital receiving signals to obtain at least receiving IQ signals, wherein the receiving IQ signals correspond to the digital receiving signals one by one. Taking the processing of the signals of two bands as an example, for example, band1 and band2, as shown in fig. 6, carrying out branching processing on the digital combined signal of the combination of band1 and band2 to obtain a digital receiving signal of band1 and a digital receiving signal of band 2; and carrying out frequency shifting treatment on the digital receiving signal of the band1 to obtain a receiving IQ signal of the band1, and carrying out frequency shifting treatment on the digital receiving signal of the band2 to obtain a receiving IQ signal of the band 2.

The digital receiving signal of band1 and the digital receiving signal of band2 are subjected to frequency shifting processing, so that targeted transmission of signals of a concerned frequency band is realized, and interface overhead is reduced.

In some possible embodiments, in the case that the frequency band modes of the received signals are different, step S3300 includes, but is not limited to, at least the following steps: performing analog cancellation processing on the received signal; and carrying out low noise amplification processing on the processed received signals by sharing a low noise amplifier to obtain amplified received signals, wherein the amplified received signals correspond to the received signals one by one.

After the received signals of different bands are subjected to analog cancellation processing, the received signals are amplified by the same LNA, so that the number of devices of a receiving link is further reduced, the volume of a radio frequency circuit is reduced, and the power consumption is reduced.

In some possible embodiments, in the case that the frequency band modes of the received signals are different, step S3300 includes, but is not limited to, at least the following steps: separating received signals of different frequency band systems to obtain FDD received signals and TDD received signals; and respectively adopting different low-noise amplifiers to carry out low-noise amplification processing on the FDD receiving signal and the TDD receiving signal to respectively obtain corresponding amplified receiving signals. The received signals of FDD and TDD are separated and respectively processed, namely, the band signals of FDD and TDD are respectively amplified, so that a plurality of radio frequency signals of different modes and different frequency bands are combined and processed.

It can be understood that, the radio frequency signal processing method of the present application corresponds to the radio frequency circuit of the present application, and specific implementation details of each embodiment of the radio frequency signal processing method of the present application may correspond to a processing flow of each device of the radio frequency circuit of the present application to a signal, and repeated descriptions are not repeated.

In order to further describe the radio frequency signal processing method and the corresponding radio frequency circuit provided by the embodiment of the application, the following description is made with reference to specific examples.

Fig. 5 is a schematic diagram of a radio frequency circuit of a three band combining circuit according to an embodiment of the present application. As shown in fig. 5, the radio frequency circuit of the present embodiment is used for transceiving signals of band1, band2 and band 3. One lane handles three bands, band1 is 1.8GHz FDD, band2 is 2.1GHz FDD, and band3 is 3.5G TDD.

For the transmitting chain, the digital processing unit comprises three first NCO and a combiner, the digital and analog conversion unit comprises a digital-to-analog conversion module, the radio frequency processing unit comprises a driving method module and a power amplifying module, the frequency selection unit comprises a group of filters, and the antenna unit comprises a group of antenna modules.

For the receiving link, the digital processing unit further comprises three second NCO and a splitter, the digital and analog conversion unit further comprises an analog to digital conversion module, the radio frequency processing unit further comprises a first LNA, a second LNA and a first switch selection module, the first switch selection module is connected to the second LNA, the frequency selection unit comprises a set of filters, and the antenna unit comprises a set of antenna modules. Wherein the transmit chain and the receive chain share a set of filters and a set of antenna modules.

For the feedback link, the digital processing unit further comprises a switchable NCO, and the switchable NCO can switch NCO1, NCO2 and NCO3, wherein NCO1 corresponds to band1, NCO2 corresponds to band2, and NCO3 corresponds to band 3; the digital and analog conversion unit further comprises an analog-to-digital conversion module, and the radio frequency processing unit further comprises a second switch selection module.

The emission process is as follows: the digital processing unit combines the baseband IQ signals of the three bands in a digital domain in a three-NCO mode, the combined signals of the three bands enter a digital-to-analog converter (Digital Analog Converter, DAC) to carry out digital-to-analog conversion, the radio frequency sampling DAC can be adopted to directly obtain the analog combined signals of the three bands, and after the analog combined signals of the three bands are subjected to driving amplification and power amplification, the respective analog transmitting signals of the three bands are respectively transmitted by antennas after passing through filters of each frequency band.

The receiving process is as follows: after receiving an original signal through an antenna, filtering and distinguishing the original signal through a filter to obtain respective receiving signals of three bands, wherein band1 and band2 are FDD signals and share a first LNA to obtain amplified receiving signals of band1 and band 2; and the band3 enters a second LNA after passing through a circulator and a first switch selection module to obtain amplified received signals of the band3, the three bands enter an Analog-to-Digital Converter (ADC) to complete digital signal conversion after being combined, NCO shifting of each of the three bands is carried out in a digital domain, the digital processing rate is reduced, and received IQ signals of each of the three bands are obtained and transmitted to a BBU.

The feedback signal enters digital processing through an analog-to-digital conversion ADC after passing through the second switch selection module, and different bands can be distinguished through NCO1/2/3 switching of the digital processing part.

Fig. 6 is a schematic diagram of a dual band combining rf circuit according to an embodiment of the present application. As shown in fig. 6, the radio frequency circuit of the present embodiment is configured to perform transceiving processing on signals of band1, band2 and/or band3, band 4. One lane handles two bands, band1 is 1.8GHz FDD, band2 is 2.6GHz TDD, band3 is 2.3G TDD, wherein band1 is 1T1R, band2 is 2T2R, band3 is 1T1R, and the lane can be doubled in practical application.

Taking band1 and band2 as examples, the emission process is as follows: the digital processing unit adopts a double NCO mode to combine two bands in a digital domain, and the combined signals of the two bands after the combination enter a DAC (digital-to-analog converter) to perform analog-to-digital conversion, wherein the radio frequency sampling DAC can be adopted to directly output analog combined signals, and can process signals with larger bandwidth; the intermediate frequency DAC can be used for outputting intermediate frequency, then the frequency converter is used for realizing frequency conversion, the analog combined signal after frequency conversion enters the power amplification module, the analog emission signal of the band1 and the analog emission signal of the band2 are obtained by one input and two output, the analog emission signal of the band1 is sent out from an air port after passing through the band1 emission filter to obtain the emission signal of the band1, and the analog emission signal of the band2 is sent out from an antenna after passing through the band2 filter to obtain the emission signal of the band 2.

Taking band1 and band2 as examples, the reception procedure is as follows: after an original signal is received through an antenna, the band1 and the band2 are distinguished through a filter to obtain a received signal of the band1 and a received signal of the band2, the received signal of the band1 passes through an LNA corresponding to the band1 to obtain an amplified received signal of the band1, the received signal of the band2 passes through a circulator and a switch and then enters the LNA corresponding to the band2 to obtain an amplified received signal of the band2, the two bands are combined to obtain a combined received signal, the combined received signal enters an analog-to-digital conversion module to complete digital signal conversion to obtain a digital combined signal, the digital combined signal is split in a digital domain and frequency-shifted through NCO respectively, the digital processing rate is reduced to obtain a received IQ signal of the band1 and a received IQ signal of the band2, and the received IQ signal is transmitted to a BBU.

The feedback signal enters digital processing through an analog-to-digital conversion ADC after being selected by a switch, and different bands can be distinguished through NCO1/2/3/4 switching in the digital processing unit.

Fig. 9 is a schematic structural diagram of an electronic device according to an embodiment of the present application. As shown in fig. 9, the apparatus includes a memory 1100, a processor 1200, and a communication device 1300. The number of the memories 1100 and the processors 1200 may be one or more, and one memory 1100 and one processor 1200 are exemplified in fig. 9; the memory 1100 and the processor 1200 in the device may be connected by a bus or otherwise, for example in fig. 9.

The memory 1100 is used as a computer readable storage medium for storing a software program, a computer executable program, and modules, such as program instructions/modules corresponding to the rf signal processing method provided in any of the embodiments of the present application. The processor 1200 implements the radio frequency signal processing method described above by running software programs, instructions, and modules stored in the memory 1110.

The memory 1100 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, at least one application program required for functions. In addition, memory 1100 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid-state storage device. In some examples, memory 1100 may further include memory located remotely from processor 1200, which may be connected to the device via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The communication device 1300 is configured to perform information transmission and reception communication according to control of the processor 1200.

In one embodiment, the communications apparatus 1300 includes a receiver 1310, a transmitter 1320. Receiver 1310 is a module or combination of devices in an electronic device that performs data reception. Transmitter 1320 is a module or combination of devices in an electronic device that performs data transmission.

An embodiment of the present application also provides a computer-readable storage medium storing computer-executable instructions for performing a radio frequency signal processing method as provided in any embodiment of the present application.

An embodiment of the present application also provides a computer program product, including a computer program or computer instructions, where the computer program or computer instructions are stored in a computer readable storage medium, and a processor of the computer device reads the computer program or computer instructions from the computer readable storage medium, and the processor executes the computer program or computer instructions, so that the computer device performs the radio frequency signal processing method as provided in any embodiment of the present application.

The system architecture and the application scenario described in the embodiments of the present application are for more clearly describing the technical solution of the embodiments of the present application, and do not constitute a limitation on the technical solution provided by the embodiments of the present application, and those skilled in the art can know that, with the evolution of the system architecture and the appearance of the new application scenario, the technical solution provided by the embodiments of the present application is applicable to similar technical problems.

Those of ordinary skill in the art will appreciate that all or some of the steps of the methods, systems, functional modules/units in the devices disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof.

In a hardware implementation, the division between the functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed cooperatively by several physical components. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.

As used in this specification, the terms "component," "module," "system," and the like are intended to refer to a computer-related entity, either hardware, firmware, a combination of hardware and software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, an object, an executable, a thread of execution, a program, or a computer. By way of illustration, both an application running on a computing device and the computing device can be a component. One or more components may reside within a process or thread of execution and a component may be localized on one computer or distributed between 2 or more computers. Furthermore, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local or remote processes such as in accordance with a signal having one or more data packets (e.g., data from two components interacting with one another in a local system, distributed system, or across a network such as the internet with other systems by way of the signal).

Some embodiments of the application are described above with reference to the accompanying drawings, which do not limit the scope of the claims. Any modifications, equivalent substitutions and improvements made by those skilled in the art without departing from the scope and spirit of the present application shall fall within the scope of the appended claims.

Claims

1. A method of radio frequency signal processing, the method comprising:

Acquiring at least two groups of baseband IQ signals, wherein at least one group of baseband IQ signals are Time Division Duplex (TDD) signals, and at least one group of baseband IQ signals are Frequency Division Duplex (FDD) signals;

Performing calibration compensation processing on the baseband IQ signal according to a feedback IQ signal to obtain a calibration signal, wherein the feedback IQ signal is acquired through a feedback link;

And performing frequency shift combining processing on at least two groups of calibration signals to obtain a combined signal.

2. The method according to claim 1, wherein the method further comprises:

Performing digital-to-analog conversion processing on the combined signal to obtain an analog combined signal;

performing radio frequency amplification and branching treatment on the analog combined signals to obtain at least two groups of analog transmission signals, wherein the analog transmission signals correspond to the baseband IQ signals;

and filtering at least two groups of analog transmitting signals to obtain transmitting signals.

3. The method according to claim 2, wherein before performing calibration compensation processing on the baseband IQ signal according to a feedback IQ signal to obtain a calibration signal, the method comprises:

acquiring transmission IQ data according to the transmission signals;

Obtaining feedback data according to the analog emission signal;

And confirming the feedback IQ signal according to the transmitting IQ data and the feedback data.

4. The method of claim 1, wherein performing frequency-shift combining on at least two sets of the calibration signals to obtain a combined signal comprises:

respectively carrying out frequency shifting treatment on at least two groups of calibration signals;

And combining the calibration signals after the frequency shifting processing to obtain the combined signal.

5. The method according to claim 1, wherein the method further comprises:

Acquiring an original signal received by an antenna unit;

Filtering the original signals to obtain at least two groups of received signals, wherein the frequency bands and/or frequency band systems of the received signals are different;

performing low-noise amplification processing on the received signal to obtain an amplified received signal;

Combining the amplified received signals to obtain combined received signals;

Performing analog-to-digital conversion processing on the combined received signal to obtain a digital combined signal;

and carrying out branching treatment on the digital combined signals to obtain at least two groups of received IQ signals, wherein the received IQ signals correspond to the received signals one by one.

6. The method of claim 5, wherein the splitting the digital combined signal to obtain at least two sets of received IQ signals comprises:

carrying out branching treatment on the digital combined signals to obtain at least two groups of digital receiving signals;

And respectively carrying out frequency shifting treatment on at least two groups of digital receiving signals to obtain at least two groups of receiving IQ signals, wherein the receiving IQ signals are in one-to-one correspondence with the digital receiving signals.

7. The method according to claim 5, wherein, in the case where the frequency band modes of the received signals are different, the performing low noise amplification processing on the received signals to obtain amplified received signals includes:

Performing analog cancellation processing on the received signal;

and carrying out low noise amplification processing on the processed received signals by sharing a low noise amplifier, and obtaining the amplified received signals, wherein the amplified received signals are in one-to-one correspondence with the received signals.

8. The method according to claim 5, wherein, in the case where the frequency band modes of the received signals are different, the performing low noise amplification processing on the received signals to obtain amplified received signals includes:

Separating the received signals of different frequency band modes to obtain FDD received signals and TDD received signals;

And respectively adopting different low-noise amplifiers to carry out low-noise amplification processing on the FDD receiving signal and the TDD receiving signal to respectively obtain the corresponding amplified receiving signals.

9. A radio frequency circuit, comprising:

The digital processing unit is used for carrying out calibration compensation processing on the acquired at least two groups of baseband IQ signals according to the feedback IQ signals to obtain corresponding calibration signals; the digital processing unit is also used for carrying out frequency shift combining processing on at least two groups of calibration signals to obtain a combined signal; wherein at least one group of baseband IQ signals are Time Division Duplex (TDD) signals, and at least one group of baseband IQ signals are Frequency Division Duplex (FDD) signals; and the feedback link is used for sampling the analog emission signal to obtain the feedback IQ signal.

10. The radio frequency circuit of claim 9, further comprising:

The digital-to-analog conversion unit is used for performing digital-to-analog conversion on the combined signal to obtain an analog combined signal;

The radio frequency processing unit is used for carrying out radio frequency amplification and branching processing on the analog combined signals to obtain at least two groups of analog transmission signals, wherein the analog transmission signals correspond to the baseband IQ signals;

the frequency selection unit is used for filtering at least two groups of analog transmission signals to obtain transmission signals;

And the antenna unit is used for transmitting the transmission signal.

11. The radio frequency circuit of claim 9, wherein the digital processing unit comprises at least two first digital oscillators and at least one combiner; the first digital oscillator is used for carrying out frequency shifting processing on the calibration signals, and the combiner is used for combining at least two groups of processed calibration signals to obtain the combined signal.

12. The radio frequency circuit of claim 9, wherein the digital processing unit comprises at least two second digital oscillators and at least one splitter; the splitter is used for splitting the digital combined signal to obtain at least two groups of digital receiving signals; the second digital oscillator is used for carrying out frequency shifting processing on the digital receiving signals to obtain receiving IQ signals, wherein the second digital oscillator corresponds to the digital receiving signals one by one.

13. The radio frequency circuit of claim 10, wherein the radio frequency processing unit comprises at least one frequency converter and at least one power amplification module; the frequency converter is used for carrying out frequency conversion processing on the analog combined signal, and the power amplification module is used for carrying out amplification processing and branching processing on the analog combined signal after the frequency conversion processing to obtain at least two groups of analog transmitting signals.

14. The radio frequency circuit of claim 10, wherein the radio frequency processing unit comprises at least one drive amplification module and at least one power amplification module; the driving amplification module is used for carrying out first amplification processing on the analog combined signal, and the power amplification module is used for carrying out second amplification processing and branching processing on the analog combined signal after the first amplification processing to obtain at least two groups of analog transmitting signals.

15. The radio frequency circuit according to claim 10, wherein the radio frequency processing unit comprises at least one low noise amplifier, and the low noise amplifier is configured to amplify at least two sets of received signals, wherein frequency band modes of the received signals are the same.

16. The radio frequency circuit of claim 10, wherein the radio frequency processing unit comprises a first low noise amplifier, a second low noise amplifier, and a switch selection module, wherein the switch selection module is coupled to the second low noise amplifier; the first low-noise amplifier is used for amplifying a received signal in an FDD frequency band; the second low noise amplifier is used for amplifying the received signal of the TDD frequency band passing through the switch selection module.

17. The radio frequency circuit of claim 10, wherein the radio frequency processing unit comprises at least one low noise amplifier and at least one analog cancellation module, the analog cancellation module being configured to perform analog cancellation processing on at least two sets of received signals, the low noise amplifier being configured to amplify the received signals after the analog cancellation processing; wherein, the frequency band modes of the received signals are different.

18. A communication device comprising a radio frequency circuit as claimed in any one of claims 9 to 17.

19. An electronic device, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the radio frequency signal processing method according to any of claims 1 to 8 when executing the computer program.

20. A computer-readable storage medium storing computer-executable instructions, the computer being operable to implement the radio frequency signal processing method of any one of claims 1 to 8 when the computer program is executed.

21. A computer program product comprising a computer program or computer instructions, characterized in that the computer program or the computer instructions are stored in a computer readable storage medium, from which the computer program or the computer instructions are read by a processor of a computer device, the processor executing the computer program or the computer instructions, such that the computer device performs the radio frequency signal processing method according to any one of claims 1 to 8.