CN116346152A - Antenna system and communication equipment - Google Patents

Abstract

The application provides an antenna system and communication equipment, which are used for reducing the influence of an additionally arranged radio frequency device on the sensitivity of an antenna to receive signals. The system specifically comprises: a first channel for delivering a first transmit signal to a first signal splitting device; the first channel comprises a first phase shifter for performing phase adjustment on a first transmission signal; a first signal separation device for delivering a first transmit signal to a first antenna; receiving a first received signal from a first antenna and delivering the first received signal to a second channel; a second channel for receiving the first received signal from the first signal separation device and processing the first received signal; the second channel comprises a first low-noise amplifier and a second phase shifter, wherein the first low-noise amplifier is used for amplifying a first received signal to obtain the amplified first received signal; the second phase shifter is used for carrying out phase adjustment on the first received signal after the signal is amplified.

Description

Antenna system and communication equipment

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to an antenna system and a communication device.

Background

In the use process of the antenna, part of the antennas need to change the angle of signal coverage according to different conditions so as to adjust the parameters such as the intensity, the area and the like of the signal coverage area. The main practice at present is to add a radio frequency device at the antenna end for adjusting the phase of the received and transmitted signal, thereby achieving the purpose of adjusting the coverage angle of the signal. An antenna in which adjustment of the coverage angle of an antenna signal is accomplished in this way is called an electrically tunable antenna.

However, the conventional electrically tunable antenna has poor sensitivity for receiving signals.

Disclosure of Invention

The application provides an antenna system and communication equipment, which are used for reducing the influence of an additionally arranged radio frequency device on the sensitivity of an antenna to receive signals and improving the sensitivity of the antenna to receive signals.

In a first aspect, an embodiment of the present application provides an antenna system, including: the first channel is used for processing the first transmission signal to obtain a processed first transmission signal, and the processed first transmission signal is transmitted to the first signal separation equipment; wherein the first channel comprises a first phase shifter for phase adjusting the first transmit signal; the first signal separation apparatus for separating a transmission signal from a reception signal passing through the first signal separation apparatus includes: transmitting the processed first transmission signal to a first antenna; receiving a first received signal from the first antenna and delivering the first received signal to a second channel; the second channel is configured to receive the first received signal from the first signal separation device, and process the first received signal to obtain a processed first received signal; the second channel comprises a first low-noise amplifier and a second phase shifter, and the first low-noise amplifier is used for amplifying the first received signal to obtain a first received signal after amplifying the signal; the second phase shifter is used for carrying out phase adjustment on the first received signal after the signal is amplified.

In the scheme, the phase shifter is reserved at the signal transmitting end, so that the reliability of the antenna system when the signal transmitting end transmits signals is ensured; the new phase shifter is added at the signal receiving end, and the problem that noise in the signal is increased due to the fact that a plurality of devices pass before the received signal enters the low noise amplifier is avoided before the low noise amplifier is moved to the new phase shifter, so that the noise coefficient of the system is optimized, and the sensitivity of the antenna system for receiving the signal is improved.

In one possible design, the first channel further comprises: and the first filter is used for carrying out noise reduction processing on the first transmission signal to obtain a filtered first transmission signal, and the filtered first transmission signal is transmitted to the first phase shifter.

In the method, the first filter can perform noise reduction processing on the first transmission signal, so that the signal to noise ratio of the transmission signal can be effectively improved, and the performance of the antenna system is improved.

In one possible design, the second channel further comprises: the second filter is used for receiving the first receiving signal from the first signal separation device, carrying out noise reduction processing on the first receiving signal to obtain a filtered first receiving signal, and conveying the filtered first receiving signal to the first low-noise amplifier.

In this way, the second filter can filter part of noise in the first received signal, so that the signal-to-noise ratio of the received signal can be effectively improved, and the performance of the antenna system can be improved.

In one possible design, the system further comprises: a third filter disposed between the first signal separation device and the first antenna; the third filter is configured to receive the first transmission signal from the first signal separation device, perform noise reduction processing on the first transmission signal, obtain a filtered first transmission signal, and transmit the filtered first transmission signal to the first antenna; the third filter is further configured to receive the first received signal from the first antenna, perform noise reduction processing on the first received signal, obtain a filtered first received signal, and transmit the filtered first received signal to the first signal separation device.

In the method, the transmitting signal and the receiving signal share the same filter, so that the implementation cost of the scheme is saved.

In one possible design, the system further comprises: the third channel is used for processing the second emission signal to obtain a processed second emission signal, and the processed second emission signal is transmitted to second signal separation equipment; wherein the third channel comprises a third phase shifter for performing phase adjustment on the second transmission signal; the second signal separation apparatus for separating a transmission signal from a reception signal passing through the second signal separation apparatus includes: transmitting the processed second transmission signal to a second antenna; the antenna is also used for receiving a second receiving signal from the second antenna and transmitting the second receiving signal to a fourth channel; the fourth channel is used for receiving the second receiving signal from the second signal separation device and processing the second receiving signal to obtain a processed second receiving signal; the fourth channel comprises a second low-noise amplifier and a fourth phase shifter, and the second low-noise amplifier is used for amplifying the second received signal to obtain a second received signal after amplifying the signal; the fourth phase shifter is used for carrying out phase adjustment on the second received signal after the signal is amplified.

In one possible design, the system further comprises: the power amplifier is used for receiving the transmitting signal from the baseband processor, and carrying out power amplification on the transmitting signal to obtain an amplified transmitting signal; the power divider is used for processing the amplified signals and generating the first transmission signals and the second transmission signals; the first transmit signal is distributed to the first channel and the second transmit signal is distributed to the third channel.

Through this mode, the advantage of multichannel antenna can make full use of, split the transmission is carried out the signal to realize wider, more accurate antenna coverage.

In one possible design, the system further comprises: and the power synthesizer is used for synthesizing the processed first received signal and the processed second received signal to obtain synthesized received signals and transmitting the synthesized received signals to the baseband processor.

In one possible design, the system is a time division duplex, TDD, system, the first signal splitting apparatus comprises a circulator and a high power switch, or the first signal splitting apparatus comprises a high power switch.

In one possible design, the system is a frequency division duplex FDD system, and the first signal separation device includes a duplexer, where the first signal separation device is further configured to perform noise reduction processing on the transmission signal and the reception signal that pass through the first signal separation device.

In a second aspect, embodiments of the present application provide a communication device comprising an antenna system according to any of the first aspects.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic diagram of an electrically tunable antenna scheme in a time division duplex system;

fig. 2 is a schematic diagram of an electrically tunable antenna scheme in a frequency division duplex system;

fig. 3 is a schematic diagram of one possible antenna system provided in the present application;

fig. 4 is a schematic diagram of a possible antenna system applied to a tdd system according to an embodiment of the present application;

fig. 5 is a schematic diagram of another possible antenna system applied to a tdd system according to an embodiment of the present application;

fig. 6 is a schematic diagram of another possible antenna system provided herein;

fig. 7 is a schematic diagram of one possible antenna system according to an embodiment of the present application;

FIG. 8 is a schematic diagram of an example one provided herein;

FIG. 9 is a schematic diagram of example two provided herein;

fig. 10 is a schematic diagram of an example three provided herein.

Detailed Description

The following detailed description of the technical solutions of the present application will be made with reference to the accompanying drawings and specific embodiments, and it should be understood that the specific features of the embodiments and embodiments of the present application are detailed descriptions of the technical solutions of the present application, and not limiting the technical solutions of the present application, and the technical features of the embodiments and embodiments of the present application may be combined with each other without conflict.

It should be appreciated that in the description of embodiments of the present application, the words "first," "second," and the like are used merely for distinguishing between the descriptions and not for indicating or implying any relative importance or order. In the description of the embodiments of the present application, "plurality" means two or more.

The term "and/or" in the embodiments of the present application is merely an association relationship describing an association object, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

At present, the implementation scheme of the electrically tunable antenna mainly comprises the following two types:

scheme one, see fig. 1, is a schematic diagram of an implementation of an electrically tunable antenna in a time division duplex (Time Division Duplex, TDD) system. As shown in fig. 1, a transmission signal (marked by TX) sent by the baseband reaches the circulator through the power amplifier, then reaches the high-power antenna filter, and is distributed to a plurality of high-power phase shifters by the power splitter, and after the phase of the transmission signal is shifted by the high-power phase shifters, the transmission signal is finally sent out by the antenna. And the received signal (marked by RX) is received by the antenna, then enters the high-power filter after being phase-shifted by the high-power phase shifter, then reaches the low-noise amplifier after passing through the circulator, and finally is formally transmitted to the baseband processor after being amplified.

In a second scheme, referring to fig. 2, a schematic diagram of an implementation scheme of an electrically tunable antenna in a frequency division duplex (Frequency Division Duplex, FDD) system is shown in fig. 2, where a transmission signal sent by a baseband reaches a duplexer through a power amplifier, and is further distributed to a plurality of high-power phase shifters by a power splitter, and after the phase shifters phase-shift the transmission signal, the transmission signal is finally sent out by the antenna. After being received by the antenna, the received signal enters the duplexer after being phase-shifted by the high-power phase shifter, is transmitted to the low-noise amplifier by the duplexer, amplifies the signal in the received signal and finally is transmitted to the baseband processor.

It can be seen from the above two schemes that after the antenna receives the signal, the received signal will sequentially pass through the phase shifter, the power combiner, the circulator/the duplexer and finally enter the low noise amplifier. The signal flow process inevitably causes a plurality of device noises to be doped in the received signal, so that the signal to noise ratio of the signal entering the low noise amplifier is reduced, the sensitivity of an antenna system is further deteriorated, and the coverage range of the received signal of the base station is reduced.

In order to solve the above technical problems, the present application provides an antenna system for improving the sensitivity of the antenna to receive signals.

The antenna system provided in the embodiment of the present application may be applicable to various communication systems, for example: long term evolution (long term evolution, LTE) systems, fifth generation (5th generation,5G) systems, such as New Radio, NR, and next generation communication systems, such as 6G systems. Of course, the technical solution of the embodiment of the present application may also be applied to other communication systems, such as a satellite communication system, an internet of vehicles communication system, and so on.

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application.

Referring to fig. 3, a schematic structural diagram of an antenna system according to an embodiment of the present application is provided. In the antenna system shown in fig. 3, an asymmetric architecture is adopted, and different devices are respectively adopted for the signal transmitting end (including the first channel) and the signal receiving end (including the second channel), so that for the antenna provided by the embodiment of the application, the transmitting signal and the receiving signal can respectively pass through the different devices.

For convenience of explanation, the embodiments of the present application will be explained below by taking a base station antenna and a user terminal as an example.

In the antenna system shown in fig. 3, the antenna system includes a first channel, a second channel, a first signal separation device, and a first antenna; the first channel comprises a first phase shifter, the second channel comprises a first low noise amplifier and a second phase shifter, and the first signal separation device is used for separating a transmitting signal and a receiving signal.

Specifically, when the antenna system as shown in fig. 3 needs to perform signal transmission, the first channel is used to process the first transmission signal: after the first transmission signal enters the first channel, the first phase shifter can adjust the phase of the first transmission signal; the phase-adjusted first transmission signal is sent to the first signal separation device, and then sent to the first antenna by the first signal separation device, and finally sent by the first antenna.

When the antenna system receives signals, the first received signals are received through the first antenna and enter the second channel through the first signal separation equipment; in the second channel, the received signal passes through the first low noise amplifier and the second phase shifter in sequence. The first low-noise amplifier amplifies a signal in the first received signal to obtain the first received signal after amplifying the signal, and transmits the signal to the second phase shifter; the second phase shifter then phase adjusts the signal. The first phase shifter may be a high power phase shifter to match the power of the transmitted signal, and the second phase shifter may be a low power phase shifter to match the lower power of the received signal.

In the scheme, the high-power phase shifter is reserved at the signal transmitting end, so that the reliability of the antenna system when the signal transmitting end transmits signals is ensured; the low-power phase shifter is added to the signal receiving end, and the low-noise amplifier is moved to the low-power phase shifter, so that the problem of noise increase in the signal caused by a plurality of devices before the received signal enters the low-noise amplifier can be avoided, the noise coefficient of the system is optimized, and the sensitivity of the antenna system for receiving the signal is improved.

For TDD and FDD systems, different devices and embodiments may be used in the implementation process of the present solution.

Alternatively, for a TDD system, the first signal splitting apparatus may comprise a circulator in combination with a high power switch. In this way, when the TDD system transmits signals, the high-power switch connects the switch to the grounding load, and the transmitted signals can be directly transmitted to the first antenna by the circulator, so that the high-power transmitted signals are prevented from being transmitted to the second channel, and the devices of the second channel are prevented from being damaged due to overload. When receiving signals, the high-power switch is connected to the second channel, and the received signals can be transmitted to the second channel through the circulator.

Through the mode, the fact that the transmitting signal cannot be conveyed to the second channel is guaranteed, the risk that the device is damaged due to overload is avoided, and the reliability of the scheme is improved.

Alternatively, the first signal splitting device may comprise a high power switch without the need for a circulator when the transmit signal power is small. For example, when transmitting signals, the high-power switch is connected with the first channel, so that the transmitted signals can smoothly enter the first antenna through the high-power switch, and when receiving signals, the high-power switch is connected with the second channel, so that the received signals can smoothly enter the second channel through the high-power switch. By this means, part of implementation cost can be saved.

In one possible implementation, referring to fig. 4, for a TDD system, the first channel further includes a first filter to filter out of band spurious noise and the like existing in the first transmission signal. The first filter may be a high-power filter to match the larger power of the first transmit signal. The first transmit signal passes through the first filter before entering the first phase shifter.

In the method, the first filter can perform noise reduction processing on the first transmission signal, so that the signal to noise ratio of the transmission signal can be effectively improved, and the performance of the antenna system is improved.

In one possible implementation, referring to fig. 4 for a TDD system, the second channel further includes a second filter to filter a portion of the out-of-band interference present in the first received signal. Wherein the second filter may be a low power filter to match the lower power of the first received signal. The first received signal passes through the second filter before entering the first low noise amplifier.

In this way, the second filter can filter part of noise in the first received signal, so that the signal-to-noise ratio of the received signal can be effectively improved, and the performance of the antenna system can be improved.

In another possible implementation manner, for a TDD system, referring to fig. 5, a third filter may be further included in the antenna system provided in the embodiment of the present application. In this design, the first and second channels do not contain filters, but a third filter is present between the first demultiplexer and the first antenna. The third filter is used for carrying out noise reduction processing on the emission signal, transmitting the filtered emission signal to the first antenna, and simultaneously, carrying out noise reduction processing on the received signal, and transmitting the filtered received signal to the second channel. Wherein the third filter may be a high power filter.

In the method, an additional second filter is not required to be added, and the filters are moved forward, so that the transmitting signal and the receiving signal share the same filter, and the implementation cost of the scheme is saved.

Alternatively, for an FDD system, the first signal splitting device may comprise a diplexer. The duplexer is used for isolating the transmitting signal from the receiving signal, ensuring that the signal transmitting end and the signal receiving end work normally at the same time, and avoiding the transmitting signal output by the first channel from entering the second channel. Meanwhile, the duplexer can also play a role in filtering, and can separate a transmitting signal and a receiving signal and simultaneously filter the transmitting signal and the receiving signal so as to improve the signal-to-noise ratio.

Above, through different signal separation equipment for this scheme can be applied to TDD system and FDD system simultaneously, has improved the suitability of this scheme.

For both TDD and FDD systems, the following embodiments may also be employed together.

Optionally, referring to fig. 6, the antenna system may further include a third channel, a fourth channel, a second signal separation device, and a second antenna. The third channel includes a third phase shifter, the fourth channel includes a second low noise amplifier and a fourth phase shifter, and the second signal separation device is used for separating the transmitting signal and the receiving signal.

Specifically, the second transmitting signal is conveyed to the second signal separation device through the third channel, and is conveyed to the second antenna by the second signal separation device; the second receiving signal received by the second antenna is sent to the fourth channel through the second separating device, and is output to the baseband after being processed in the fourth channel. The specific processing manner of the third channel to the transmitting signal may refer to the processing manner of the first channel, and the specific processing manner of the fourth channel to the receiving signal may refer to the processing manner of the second channel, which will not be described herein.

It should be understood that the above-mentioned second signal separation apparatus includes the same device in the TDD system as the first signal separation apparatus includes in the TDD system, and the device in the FDD system is the same as the first signal separation apparatus includes in the FDD system.

Optionally, referring to fig. 7, the antenna system provided in the present application may further include a power amplifier, configured to receive the transmission signal from the baseband processor, and amplify the power of the transmission signal to meet the requirements required for signal transmission. The power divider is used for receiving the amplified emission signal from the power amplifier, splitting the energy of the signal to obtain a first emission signal and a second emission signal, conveying the first emission signal to the first channel, and conveying the second emission signal to the third channel.

Through this mode, the advantage of multichannel antenna can make full use of, split the transmission is carried out the signal to realize wider, more accurate antenna coverage.

Optionally, referring to fig. 7, the antenna system provided in the present application may further include a power synthesizer, configured to receive the processed first received signal and the processed second received signal from the second channel and the fourth channel, and combine the first received signal and the second received signal to obtain a combined received signal; the received signal is fed to a baseband processor.

It should be understood that, in the above description, although only four channels of the first channel, the second channel, the third channel and the fourth channel are described, in actual production and life, more channels may be set according to specific use requirements, and the present application is not limited thereto.

It will be appreciated that the above embodiments may be combined with each other to achieve different technical effects.

In the following, several possible combinations are presented by means of several specific examples.

Example one, a TDD system, is an embodiment of a multi-channel antenna system.

Referring to fig. 8, the signal transmitting terminal includes a plurality of channels connected by a power divider. When transmitting signals, the transmitting signals TX enter a high-power filter after power amplification of a power amplifier, and enter a power distributor after partial out-of-band spurious emissions are filtered. Then, the power divider splits the transmission signal TX into a plurality of sub-transmission signals matched with the number of channels included in the signal transmitting end, and transmits the sub-transmission signals to the high-power phase shifters of the channels, so as to realize phase adjustment. And transmitting the plurality of sub-transmitting signals after the phase adjustment to corresponding antennas by the circulator, and completing final transmission by the antennas.

Meanwhile, the signal receiving end also comprises a plurality of channels, and antennas corresponding to the channels respectively receive a plurality of sub-receiving signals. The received sub-received signals firstly enter a low-power filter through a circulator, and enter a low-noise amplifier after partial out-of-band interference in the received signals is filtered. At this time, the received sub-received signals in the respective channels first enter the low noise amplifier in the channel to complete signal amplification. Therefore, partial device noise doped in the sub-receiving signals due to the fact that the sub-receiving signals pass through the phase shifter is avoided, and system noise of the antenna system is optimized. After the signal amplification is completed, the received sub-received signals in each channel enter a low-power phase shifter to perform phase adjustment, so as to realize shaping of a receiving link and ensure the coverage area of the receiving link. Finally, the plurality of sub-receiving signals are subjected to signal synthesis by a power synthesizer to obtain a synthesized receiving signal RX, and the synthesized receiving signal RX is transmitted to a baseband processor, and finally the signal reception is completed.

In example two, TDD systems, another embodiment of a multi-channel antenna system.

Referring to fig. 9, in this embodiment, the processing manner of the signal in all the devices except the filter is the same as that of the embodiment shown in fig. 8, and details thereof are omitted here. The present embodiment is different from the embodiment shown in fig. 8 in that the filter is shared by the signal transmitting end and the signal receiving end. By the mode, a low-power filter is not required to be additionally arranged at the signal receiving end, the implementation cost of the scheme is saved, and the optimization effect on system noise is ensured.

In example three, FDD system, an implementation of a multi-channel antenna system.

Referring to fig. 10, in the present embodiment, the signal separation device is a diplexer, and the diplexer has both a signal separation function and a filtering function, so that a filter is not required to be provided in the present embodiment. Meanwhile, in the scheme, the received signal still passes through the low-noise amplifier at first and then enters the low-power phase shifter, so that the optimization effect on the system noise is ensured.

Based on the same technical concept, the application also provides a communication device, which comprises any one of the antenna systems. The communication device may be any device having a communication function, for example, a base station, a mobile phone, an unmanned aerial vehicle, a ship, a satellite, a ground station, etc., which is not limited in this application.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, 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, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present application without departing from the spirit or scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims and the equivalents thereof, the present application is intended to cover such modifications and variations.

Claims (10)

1. An antenna system, the system comprising:

the first channel is used for processing the first transmission signal to obtain a processed first transmission signal, and the processed first transmission signal is transmitted to the first signal separation equipment; wherein the first channel comprises a first phase shifter for phase adjusting the first transmit signal;

the first signal separation apparatus for separating a transmission signal from a reception signal passing through the first signal separation apparatus includes: transmitting the processed first transmission signal to a first antenna; receiving a first received signal from the first antenna and delivering the first received signal to a second channel;

the second channel is configured to receive the first received signal from the first signal separation device, and process the first received signal to obtain a processed first received signal; the second channel comprises a first low-noise amplifier and a second phase shifter, and the first low-noise amplifier is used for amplifying the first received signal to obtain a first received signal after amplifying the signal; the second phase shifter is used for carrying out phase adjustment on the first received signal after the signal is amplified.

2. The system of claim 1, wherein the first channel further comprises:

and the first filter is used for carrying out noise reduction processing on the first transmission signal to obtain a filtered first transmission signal, and the filtered first transmission signal is transmitted to the first phase shifter.

3. The system of claim 1 or 2, wherein the second channel further comprises:

the second filter is used for receiving the first receiving signal from the first signal separation device, carrying out noise reduction processing on the first receiving signal to obtain a filtered first receiving signal, and conveying the filtered first receiving signal to the first low-noise amplifier.

4. The system of claim 1, wherein the system further comprises:

a third filter disposed between the first signal separation device and the first antenna;

the third filter is configured to receive the first transmission signal from the first signal separation device, perform noise reduction processing on the first transmission signal, obtain a filtered first transmission signal, and transmit the filtered first transmission signal to the first antenna;

the third filter is further configured to receive the first received signal from the first antenna, perform noise reduction processing on the first received signal, obtain a filtered first received signal, and transmit the filtered first received signal to the first signal separation device.

5. The system of claim 1, wherein the system further comprises:

the third channel is used for processing the second emission signal to obtain a processed second emission signal, and the processed second emission signal is transmitted to second signal separation equipment; wherein the third channel comprises a third phase shifter for performing phase adjustment on the second transmission signal;

the second signal separation apparatus for separating a transmission signal from a reception signal passing through the second signal separation apparatus includes: transmitting the processed second transmission signal to a second antenna; the antenna is also used for receiving a second receiving signal from the second antenna and transmitting the second receiving signal to a fourth channel;

the fourth channel is used for receiving the second receiving signal from the second signal separation device and processing the second receiving signal to obtain a processed second receiving signal; the fourth channel comprises a second low-noise amplifier and a fourth phase shifter, and the second low-noise amplifier is used for amplifying the second received signal to obtain a second received signal after amplifying the signal; the fourth phase shifter is used for carrying out phase adjustment on the second received signal after the signal is amplified.

6. The system of claim 5, wherein the system further comprises:

the power amplifier is used for receiving the transmitting signal from the baseband processor, and carrying out power amplification on the transmitting signal to obtain an amplified transmitting signal;

the power divider is used for processing the amplified signals and generating the first transmission signals and the second transmission signals; the first transmit signal is distributed to the first channel and the second transmit signal is distributed to the third channel.

7. The system of claim 5, wherein the system further comprises:

and the power synthesizer is used for synthesizing the processed first received signal and the processed second received signal to obtain synthesized received signals and transmitting the synthesized received signals to the baseband processor.

8. The system of any of claims 1-7, wherein the system is a time division duplex, TDD, system, the first signal splitting apparatus comprising a circulator and a high power switch, or the first signal splitting apparatus comprising a high power switch.

9. The system of any of claims 1, 5, 6, or 7, wherein the system is a frequency division duplex, FDD, system and the first signal splitting device comprises a diplexer, wherein the first signal splitting device is further configured to noise reduce the transmit signal and the receive signal that pass through the first signal splitting device.

10. A communication device, characterized in that the communication device comprises an antenna system according to any of claims 1-9.

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