CN115275611A

CN115275611A - Antenna system

Info

Publication number: CN115275611A
Application number: CN202110482425.0A
Authority: CN
Inventors: 李向东; 赵晓丽
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-04-30
Filing date: 2021-04-30
Publication date: 2022-11-01
Also published as: WO2022228045A1

Abstract

The embodiment of the application provides an antenna system, relates to the technical field of terminals, and solves the problems of limitation of device customization difficulty, antenna cost and area under LB + LB and 4 x 4MIMO combinations of 5G terminal equipment. The specific scheme is as follows: a first tunable phase shift circuit for adjusting a frequency at which the first antenna receives a signal to receive a first dual frequency signal from the first antenna; the first tunable power divider is used for adjusting the frequency of a radio frequency channel between the first tunable power divider and the first antenna integrated module; separating a first dual-frequency signal received from the first tunable phase shift circuit into a first frequency signal and a second frequency signal, and transmitting the first frequency signal and the second frequency signal to the first antenna integrated module; the first antenna integrated module is used for synthesizing the two signals into a second dual-frequency signal and enabling the second dual-frequency signal to pass through a first tunable filter of the radio frequency integrated module; and the first tunable filter is used for outputting the second dual-frequency signal on different radio frequency channels according to frequency distribution. The embodiment of the application is used for downlink receiving control of the terminal equipment.

Description

Antenna system

Technical Field

The embodiment of the application relates to the technical field of terminals, in particular to an antenna system.

Background

With the development of fifth generation mobile network (5G) communication and 5G terminal devices, a non-independent networking mode in which Long Term Evolution (LTE) and 5G New air interface (New Radio, NR) NR are doubly connected develops rapidly, and an operator has a strong demand that a 5G terminal device can support a dual-frequency Band (Low Band, LB) + LB (e.g., B20+ n 28A), and hopes that the LB can support a 4 × 4 Multiple Input Multiple Output (MIMO) combination, so as to improve a downlink rate of the 5G terminal device.

Currently, in a prior art, a multifunctional device is used to implement a signal synthesis method to evaluate a 4 × 4mimo combination implementing LB1+ LB2 (B20 + N28A) or LB3+ LB2 (B8 + N28A). For example, the antenna may be combined with a plurality of duplexers, or a plurality of triplexers, or a plurality of quadroplexers and Dual saw or filter (triaw), etc. to implement transmit-receive (TRX) for the 4 × 4mimo combination of LB1+ LB2 or LB3+ LB2, etc., MIMO Primary Receive (PRX) for B8+ N28A & B20+ N28A, diversity Receive (DRX) for B8+ N28A & B20+ N28A, and MIMO DRX. However, to support LB + LB and 4 × 4mimo combinations in this method, multiple duplexers/triplexers/quadroplexers and Dual saw/Trisaw devices are required, which makes customization of the devices difficult, and increases the cost and area of the antenna.

Disclosure of Invention

The embodiment of the application provides an antenna system, and solves the problem of limitation of device customization difficulty, antenna cost and area under the combination of LB + LB and 4 x 4MIMO of 5G terminal equipment.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, an antenna system is provided, where the antenna system includes a first antenna integrated module, a first radio frequency integrated module, a first antenna, a first tunable phase shift circuit coupled to the first antenna, a first tunable power divider, and a first tunable filter; when the first antenna is used for receiving signals:

the first tunable phase shifting circuit is used for adjusting the frequency when the first antenna receives the signal, receiving a first dual-frequency signal from the first antenna and sending the first dual-frequency signal to the first tunable power divider; the first tunable power divider is used for adjusting the frequency of a radio frequency channel between the first tunable power divider and the first antenna integrated module; according to the frequency of a radio frequency channel between the first tunable power divider and the first antenna integrated module, a first dual-frequency signal received from the first tunable phase shift circuit is separated into a first frequency signal and a second frequency signal, and the first frequency signal and the second frequency signal are transmitted to the first antenna integrated module; the first antenna integrated module is used for demodulating a first frequency signal and a second frequency signal received from the first tunable power divider, synthesizing the two demodulated signals into a second dual-frequency signal, and sending the second dual-frequency signal to the first radio frequency integrated module; the first radio frequency integrated module is used for transmitting a second dual-frequency signal; and the first tunable filter is used for receiving the second dual-frequency signal and distributing the second dual-frequency signal to different radio frequency channels according to the frequency to output.

Therefore, under the condition that the first tunable phase shift circuit, the first tunable power divider and the first tunable filter are added into the antenna system, the tunable circuit can be used for realizing frequency adjustment when the first antenna receives signals, distribution of the adjusted frequency on a radio frequency channel and distribution of signals with different frequencies on the radio frequency channel, so that the frequencies of the antenna end and the radio frequency end are kept consistent, and accurate frequency and matching control from the antenna end to the radio frequency end are realized. In addition, this application utilizes tunable circuit to realize the system that dual-frenquency and MIMO combine, can avoid using antenna and multiplexer, multifrequency filter quantity under the MIMO combination of multiple complicated LB + LB among the prior art, and the device quantity of the tunable circuit of this application is less, and it is less to occupy the PCB area.

In one possible design, when the first antenna is a main set antenna, the antenna system further includes a second tunable power divider coupled to the main set antenna; when the main set antenna is used for receiving signals, the first radio frequency integrated module is used for sending second dual-frequency signals to the second tunable power divider; the second tunable power divider is used for receiving a second dual-frequency signal sent by the first radio frequency integrated module and sending the second dual-frequency signal to the first tunable filter; and the first tunable filter is used for receiving a second dual-frequency signal transmitted by the second tunable power divider. That is, when the first antenna is the dominant set antenna, the second tunable power divider may receive the second dual-frequency signal sent by the first rf integrated module, and the second dual-frequency signal is transmitted to the second tunable power divider on one rf channel. The second tunable power divider may directly transmit the second dual-frequency signal to the first tunable filter such that the first tunable filter performs signal distribution on the second dual-frequency signal.

In one possible design, the first antenna is a dominant set antenna, and when the dominant set antenna is used to transmit signals:

the second tunable power divider is further configured to synthesize two signals received from radio frequency channels with different frequencies into a third dual-frequency signal, and send the third dual-frequency signal to the first radio frequency integrated module; the first radio frequency integrated module is used for sending the third dual-frequency signal to the antenna integrated module; the first antenna integrated module is further configured to demodulate a third dual-frequency signal received from the first radio frequency integrated module, separate the third dual-frequency signal into a third frequency signal and a fourth frequency signal according to a frequency of a radio frequency channel between the first antenna integrated module and the first tunable power divider, and send the third frequency signal and the fourth frequency signal to the first tunable power divider; the first tunable power divider is further used for adjusting the frequency of a radio frequency channel between the first tunable power divider and the first antenna integrated module; synthesizing the third frequency signal and the fourth frequency signal received from the first antenna integrated module into a fourth dual-frequency signal, and sending the fourth dual-frequency signal to the first tunable phase-shifting circuit; and the first tunable phase shift circuit is further used for adjusting the frequency of the main set antenna so as to transmit a fourth dual-frequency signal received from the first tunable power divider through the main set antenna.

That is to say, when the first antenna transmits a signal, the second tunable power divider at the rf end may synthesize signals received from rf channels with different frequencies, so that the synthesized signal is sent to the first antenna integration module through the rf integration module. The first antenna integrated module can redistribute the synthesized signal sent by the radio frequency end according to the frequency of the radio frequency channel between the first tunable power divider and the antenna integrated module, which is adjusted by the first tunable power divider, i.e. the synthesized signal is sent to the first tunable power divider according to the frequencies of different radio frequency channels, so as to realize accurate frequency control and matching control from the radio frequency end to the antenna end. And the first tunable phase shift circuit can also tune the frequency of the main set antenna, so that the main set antenna can transmit the dual-frequency signal received from the radio frequency end according to the tuned frequency.

In a possible design, when the first antenna is a main set antenna, the antenna system further includes a second antenna, a second tunable phase shift circuit coupled to the second antenna, a third tunable power divider, and a second tunable filter; the second antenna is a diversity antenna, and when the diversity antenna is used for receiving signals:

the second tunable phase shift circuit is used for adjusting the frequency when the diversity antenna receives the signal, receiving a fifth dual-frequency signal from the diversity antenna and sending the fifth dual-frequency signal to the third tunable power divider; the third tunable power divider is used for adjusting the frequency of a radio frequency channel between the third tunable power divider and the first antenna integrated module; separating a fifth dual-frequency signal received from the second tunable phase shift circuit into a fifth frequency signal and a sixth frequency signal according to the frequency of a radio frequency channel between the third tunable power divider and the first antenna integrated module, and transmitting the fifth frequency signal and the sixth frequency signal to the first antenna integrated module; the first antenna integrated module is used for demodulating a fifth frequency signal and a sixth frequency signal received from the third tunable power divider, synthesizing the two modulated signals into a sixth dual-frequency signal, and sending the sixth dual-frequency signal to the first radio frequency integrated module; the first radio frequency integrated module is used for sending the sixth double-frequency signal to the second tunable filter; and the second tunable filter is used for receiving the sixth double-frequency signal from the first radio frequency integrated module and distributing the sixth double-frequency signal on different radio frequency channels according to the frequency to output. Similar to the first antenna as the main set antenna, when the diversity antenna of the present application is used for receiving signals, the precise frequency control and frequency matching between the radio frequency end and the antenna end can be realized through the tunable circuit of the radio frequency end and the tunable circuit of the antenna end. Moreover, the number of the antennas, the multiplexers and the multi-frequency filters under the 4 x 4MIMO combination of various complex LB + LB can be reduced, and the corresponding tunable circuits are coupled with the main set antenna and the diversity antenna.

In one possible design, the antenna system further includes a second antenna integration module, a second radio frequency integration module, a first multiple-input multiple-output, MIMO, antenna, and a second MIMO antenna; a third tunable phase shift circuit, a fourth tunable power divider and a third tunable filter coupled to the first MIMO antenna; a fourth tunable phase shift circuit, a fifth tunable power divider, and a fourth tunable filter coupled to the second MIMO antenna; when the first MIMO antenna is used to receive signals:

the third tunable phase shift circuit is used for adjusting the frequency when the first MIMO antenna receives the signal, receiving a seventh dual-frequency signal from the first MIMO antenna, and sending the seventh dual-frequency signal to the fourth tunable power divider; the fourth tunable power divider is used for adjusting the frequency of a radio frequency channel between the fourth tunable power divider and the second antenna integration module; according to the frequency of a radio frequency channel between the fourth tunable phase shift circuit and the second antenna integrated module, a seventh dual-frequency signal received from the fourth tunable phase shift circuit is separated into a seventh frequency signal and an eighth frequency signal, and the seventh frequency signal and the eighth frequency signal are transmitted to the second antenna integrated module; the second antenna integrated module is used for demodulating a seventh frequency signal and an eighth frequency signal received from the fourth tunable power divider, synthesizing the demodulated two signals into an eighth dual-frequency signal, and sending the eighth dual-frequency signal to the second radio frequency integrated module; the second radio frequency integrated module is used for sending the eighth dual-frequency signal to the third tunable filter; and the third tunable filter is used for receiving the eighth dual-frequency signal from the second radio frequency integrated module and distributing the eighth dual-frequency signal on different radio frequency channels according to the frequency to output.

The second MIMO antenna, when used to receive signals:

the fourth tunable phase shift circuit is used for adjusting the frequency when the second MIMO antenna receives the signal, receiving a ninth dual-frequency signal from the second MIMO antenna and sending the ninth dual-frequency signal to the fifth tunable power divider; the fifth tunable power divider is used for adjusting the frequency of a radio frequency channel between the fifth tunable power divider and the second antenna integration module; according to the frequency of a radio frequency channel between the first antenna integrated module and the second antenna integrated module, a ninth dual-frequency signal received from the fourth tunable phase shift circuit is separated into a ninth frequency signal and a tenth frequency signal, and the ninth frequency signal and the tenth frequency signal are transmitted to the second antenna integrated module; the second antenna integrated module is used for demodulating a ninth frequency signal and a tenth frequency signal received from the fourth tunable power divider, synthesizing the demodulated signals into a tenth dual-frequency signal, and sending the tenth dual-frequency signal to the second radio frequency integrated module; the second radio frequency integrated module is used for sending the tenth dual-frequency signal to the third tunable filter; and the fourth tunable filter is used for receiving the tenth dual-frequency signal from the second radio frequency integrated module and distributing the tenth dual-frequency signal on different radio frequency channels according to the frequency to output.

By combining the main set antenna, the diversity antenna, and the first MIMO antenna and the second MIMO antenna in the present design, the present application can implement frequency control and frequency matching under LB + LB combined MIMO. Similar to the main set antenna and the diversity antenna, the tunable circuit of the radio frequency end coupled with the first MIMO antenna and the tunable circuit of the antenna end can realize precise frequency control and frequency matching of the radio frequency end and the antenna end of the first MIMO antenna. Similar to the first MIMO antenna, the tunable circuit at the radio frequency end and the tunable circuit at the antenna end coupled to the second MIMO antenna can implement precise frequency control and frequency matching between the radio frequency end and the antenna end of the second MIMO antenna. Moreover, the number of antennas, multiplexers and multi-frequency filters under 4 x 4MIMO combination of various complex LB + LB can be reduced, and the area occupation of the single plate can be reduced only by coupling the corresponding tunable circuits for the main set antenna, the diversity antenna, the first MIMO antenna and the second MIMO antenna.

In one possible design, the first tunable phase shift circuit includes: a first variable capacitor bank connected to an open end of a radiation patch of the first antenna; the first variable capacitor bank is used to adjust the dual frequency at which the first antenna receives signals and the frequency at which signals are transmitted. Therefore, by adjusting the capacitance value of the first variable capacitor bank, the tuning frequency of a single antenna, for example, LB1+ LB2+ LB3 \8230, can be expanded, so that the signal of various frequency bands can be processed by the single antenna through the tunable phase-shifting circuit. Similarly, the implementation principles of the second tunable phase shift circuit corresponding to the diversity antenna, the third tunable phase shift circuit corresponding to the first MIMO antenna, and the fourth tunable phase shift circuit corresponding to the second MIMO antenna can be referred to the principle of the first tunable phase shift circuit to implement frequency adjustment of the diversity antenna, the first MMO antenna, and the second MIMO antenna.

In one possible design, the first tunable power divider includes: each path of power divider in the multi-path power divider comprises a microstrip transmission line, a second variable capacitor bank and a direct current bias circuit, wherein the second variable capacitor bank is connected with the microstrip transmission line; each microstrip transmission line corresponds to one radio frequency channel; the second variable capacitor bank and the direct current bias circuit are used for adjusting the frequency of the microstrip transmission line; and each first tunable impedance in the plurality of first tunable impedances is bridged between the adjacent microstrip transmission lines and is used for carrying out port isolation on the adjacent microstrip transmission lines. That is to say, the tunable power divider may perform frequency allocation of LB + LB signals, that is, the first tunable power divider may tune multiple frequency signals of a single antenna (main set antenna) to different microstrip transmission lines, for example, tune LB1 TRX to one microstrip transmission line for transmission, tune LB2TRX to another microstrip transmission line for transmission, and implement frequency allocation of LB + LB signals. In addition, the first tunable impedance can be used for realizing port isolation among all transmission lines and reducing interference among microstrip transmission lines. Similarly, the implementation of the second tunable power splitter coupled to the main set antenna, the third tunable power splitter coupled to the diversity antenna, the fourth tunable power splitter coupled to the first MIMO antenna, and the fifth tunable power splitter coupled to the second MIMO antenna may be referred to the implementation of the first tunable power splitter.

In one possible design, a coupler and a plurality of second tunable impedances are connected between the first tunable power divider and the antenna integrated module, and are used for isolating the main set antenna from other antennas. The coupler and the second tunable impedance here may be understood to be used to increase PRX and DRX; MIMO antennas PRX and DRX; the isolation among the main set antenna, the diversity antenna and the MIMO antenna reduces the interference of signals in the transmission among the radio frequency channels of different antennas.

In a second aspect, a frequency control method is provided, which is applied to an antenna system, where the antenna system includes a first antenna integrated module, a first radio frequency integrated module, a first antenna, a first tunable phase shift circuit coupled to the first antenna, a first tunable power divider, and a first tunable filter; when the first antenna is used for receiving signals, the method comprises the following steps:

controlling a first tunable phase shift circuit to adjust a frequency at which a first antenna receives a signal to receive a first dual-frequency signal from the first antenna; controlling a first tunable phase shifting circuit to send a first dual-frequency signal to a first tunable power divider; controlling a first tunable power divider to adjust the frequency of a radio frequency channel between the first tunable power divider and a first antenna integrated module, controlling the first tunable power divider to separate a first dual-frequency signal into a first frequency signal and a second frequency signal according to the frequency of the radio frequency channel between the first tunable power divider and the first antenna integrated module, and transmitting the first frequency signal and the second frequency signal to the first antenna integrated module; controlling the first antenna integration module to demodulate the first frequency signal and the second frequency signal, synthesizing the demodulated two signals into a second dual-frequency signal, and sending the second dual-frequency signal to the first radio frequency integration module; controlling the first radio frequency integrated module to send a second dual-frequency signal; and controlling the first tunable filter to receive the second dual-frequency signal and distribute the second dual-frequency signal to be output on different radio frequency channels according to the frequency.

The advantageous effects of the second aspect can be seen in the description of the advantageous effects of the first aspect.

In one possible design, when the first antenna is a main set antenna, the antenna system further includes a second tunable power divider coupled to the main set antenna; when the main set antenna is used for receiving signals, the step of controlling the first radio frequency integrated module to send the second dual-frequency signals to the first tunable filter comprises the following steps: controlling the first radio frequency integrated module to send the second dual-frequency signal to the second tunable power divider; and controlling the second tunable power divider to output the second dual-frequency signal to the first tunable filter.

In one possible design, when the first antenna is a dominant set antenna and the dominant set antenna is used to transmit signals, the method further includes: controlling a second tunable power divider to synthesize two signals received from radio frequency channels with different frequencies into a third dual-frequency signal, and sending the third dual-frequency signal to a first radio frequency integrated module; controlling the first radio frequency integrated module to send the third dual-frequency signal to the first antenna integrated module; controlling the first antenna integration module to demodulate the third dual-frequency signal, separating the third dual-frequency signal into a third frequency signal and a fourth frequency signal according to the frequency of a radio frequency channel between the third dual-frequency signal and the first tunable power divider, and sending the third frequency signal and the fourth frequency signal to the first tunable power divider; controlling the first tunable power divider to adjust the frequency of a radio frequency channel between the first tunable power divider and the first antenna integrated module; synthesizing the received third frequency signal and the fourth frequency signal into a fourth double-frequency signal, and sending the fourth double-frequency signal to the first tunable phase-shifting circuit; and controlling the first tunable phase-shifting circuit to adjust the frequency of the main set antenna and controlling the first tunable phase-shifting circuit to send the fourth dual-frequency signal to the main set antenna so as to control the main set antenna to transmit the fourth dual-frequency signal.

In a possible design, when the first antenna is a main set antenna, the antenna system further includes a second antenna, a second tunable phase shift circuit coupled to the second antenna, a third tunable power divider, and a second tunable filter; the second antenna is a diversity antenna, and when the diversity antenna is used for receiving signals, the method further comprises: controlling a second tunable phase shift circuit to adjust the frequency of the diversity antenna when receiving the signal, so as to receive a fifth dual-frequency signal from the diversity antenna and send the fifth dual-frequency signal to a third tunable power divider; controlling a third tunable power divider to adjust the frequency of a radio frequency channel between the third tunable power divider and the first antenna integrated module; controlling a third tunable power divider to separate a fifth dual-frequency signal received from a second tunable phase shift circuit into a fifth frequency signal and a sixth frequency signal according to the frequency of a radio frequency channel between the third tunable power divider and the first antenna integrated module, and transmitting the fifth frequency signal and the sixth frequency signal to the first antenna integrated module; controlling the first antenna integrated module to demodulate a fifth frequency signal and a sixth frequency signal received from the third tunable power divider, synthesizing the two modulated signals into a sixth dual-frequency signal, and sending the sixth dual-frequency signal to the first radio frequency integrated module; controlling the first radio frequency integrated module to send the sixth dual-frequency signal to the second tunable filter; and controlling the second tunable filter to receive the sixth dual-frequency signal from the first radio frequency integrated module, and distributing the sixth dual-frequency signal on different radio frequency channels according to the frequency to output.

In one possible design, the antenna system further includes a second antenna integration module, a second radio frequency integration module, a first MIMO antenna, and a second MIMO antenna; a third tunable phase shift circuit, a fourth tunable power divider, and a third tunable filter coupled to the first MIMO antenna; a fourth tunable phase shift circuit, a fifth tunable power divider, and a fourth tunable filter coupled to the second MIMO antenna;

when the first MIMO antenna is used to receive signals, the method further comprises: controlling a third tunable phase shift circuit to adjust the frequency of the first MIMO antenna when receiving the signal, so as to receive a seventh dual-frequency signal from the first MIMO antenna, and send the seventh dual-frequency signal to a fourth tunable power divider; controlling a fourth tunable power divider to adjust the frequency of a radio frequency channel between the fourth tunable power divider and the second antenna integration module; controlling a fourth tunable power divider to separate a seventh dual-frequency signal received from a fourth tunable phase shift circuit into a seventh frequency signal and an eighth frequency signal according to the frequency of a radio frequency channel between the fourth tunable power divider and the second antenna integrated module, and transmitting the seventh frequency signal and the eighth frequency signal to the second antenna integrated module; controlling a second antenna integrated module to demodulate a seventh frequency signal and an eighth frequency signal received from a fourth tunable power divider, synthesizing the demodulated two signals into an eighth dual-frequency signal, and sending the eighth dual-frequency signal to a second radio frequency integrated module; controlling the second radio frequency integrated module to send the eighth dual-frequency signal to the third tunable filter; and controlling the third tunable filter to receive the eighth dual-frequency signal from the second radio frequency integrated module, and distributing the eighth dual-frequency signal on different radio frequency channels according to the frequency to output.

When the second MIMO antenna is used to receive signals, the method further comprises: controlling a fourth tunable phase shift circuit to adjust the frequency of the second MIMO antenna when receiving the signal, so as to receive a ninth dual-frequency signal from the second MIMO antenna, and send the ninth dual-frequency signal to a fifth tunable power divider; controlling the fifth tunable power divider to adjust the frequency of a radio frequency channel between the fifth tunable power divider and the second antenna integration module; according to the frequency of a radio frequency channel between the first antenna integrated module and the second antenna integrated module, a ninth dual-frequency signal received from the fourth tunable phase shift circuit is separated into a ninth frequency signal and a tenth frequency signal, and the ninth frequency signal and the tenth frequency signal are transmitted to the second antenna integrated module; controlling a second antenna integrated module to demodulate a ninth frequency signal and a tenth frequency signal received from a fourth tunable power divider, synthesizing the demodulated signals into a tenth dual-frequency signal, and sending the tenth dual-frequency signal to a second radio frequency integrated module; controlling the second radio frequency integrated module to send the tenth dual-frequency signal to the third tunable filter; and controlling the fourth tunable filter to receive the tenth dual-frequency signal from the second radio frequency integrated module, and distributing the tenth dual-frequency signal on different radio frequency channels according to the frequency to output.

In one possible design, controlling the first tunable phase shift circuit to adjust the frequency at which the first antenna receives the signal includes: and controlling a first variable capacitor bank in the first tunable phase-shifting circuit to adjust the frequency of the first antenna when receiving signals, wherein the first variable capacitor bank is connected with the open end of the radiation patch of the first antenna.

In one possible design, the first tunable power divider includes: each path of power divider in the multi-path power divider comprises a microstrip transmission line, a second variable capacitor bank and a direct current bias circuit, wherein the second variable capacitor bank is connected with the microstrip transmission line; each microstrip transmission line corresponds to one radio frequency channel; a plurality of first tunable impedances, each of which is connected across adjacent microstrip transmission lines; controlling the first tunable power divider to adjust the frequency of the radio frequency channel between the first tunable power divider and the antenna integration module includes: the frequency of the microstrip transmission line is adjusted through a second variable capacitor bank and a direct current bias circuit which are connected with the microstrip transmission line and are included in each path of power divider; adjacent microstrip transmission lines are port isolated by a plurality of first tunable impedances.

In one possible design, a coupler and a plurality of second tunable impedances are connected between the first tunable power divider and the antenna integrated module, and are used for isolating the first antenna from other antennas.

In a third aspect, a communication device is provided, which includes the antenna system according to the first aspect and any one of the possible designs of the first aspect.

In a fourth aspect, there is provided a chip coupled to a memory for reading and executing program instructions stored in the memory to implement a method as described in the second aspect or any one of the possible designs of the second aspect.

In a fifth aspect, there is provided a computer readable storage medium comprising computer instructions which, when run on an electronic device, cause the electronic device to perform the method as described above in the second aspect or any one of the possible designs of the second aspect.

A sixth aspect provides a computer program product for causing an electronic device to perform the method as described above in relation to the second aspect or any one of the possible designs of the second aspect, when the computer program product is run on a computer.

Drawings

Fig. 1 is a schematic circuit diagram of an antenna array for implementing signal synthesis according to an embodiment of the present disclosure;

fig. 2 is a schematic circuit diagram illustrating an antenna array implementing signal synthesis according to an embodiment of the present disclosure;

fig. 3 is a schematic diagram of an antenna system according to an embodiment of the present application;

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

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

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

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

fig. 5 is a schematic flowchart of a frequency control method according to an embodiment of the present disclosure;

fig. 6 is a schematic control flow diagram of a software program of a signal control module provided in an embodiment of the present application for a module of an antenna system provided in the present application;

fig. 7 is a schematic circuit structure diagram of a first tunable power divider according to an embodiment of the present disclosure;

fig. 8 is a schematic circuit structure diagram of a coupler and a plurality of second tunable impedances, where the coupler is connected between a first tunable power divider and an antenna integrated module according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a radio frequency device according to an embodiment of the present application;

fig. 10 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Detailed Description

For ease of understanding, examples are given in part to illustrate concepts related to embodiments of the present application. As follows:

LB + LB: the terminal equipment supports double frequencies of a low-frequency mode under dual connection of LTE and NR, for example, LB + LB supported by a 5G mobile phone can be various LB + LB combinations of 8/20/28A \8230, such as B20+ N28A and B8+ N28A.

MIMO antenna: in order to greatly improve the channel capacity, a plurality of antennas are used at both the transmitting end and the receiving end, and an antenna system with a plurality of channels is formed between the transmitting end and the receiving end.

Main set antenna: which is responsible for the transmission and reception of signals.

Diversity antenna: is responsible for receiving signals and is not responsible for sending signals.

TRX: the signals received and transmitted by the main set antennas may include transmit TX signals and main set receive PRX signals;

DRX: the signals received by the diversity antennas.

PRX: signals received by the dominant set of antennas.

Currently, there are no products and solutions available in the industry that support both LB + LB and m MIMO, such as 4 x 4 MIMO. Currently, in one technique, a scheme for evaluating 4 × 4mimo implementing LB1+ LB2 (B20 + N28A) and LB3+ LB2 (B8 + N28A) by using a multi-function device to implement a signal synthesis method may be shown in fig. 1, where N28A is a number segment in a 5G band, and B8 and B20 are both number segments in a 4G band. Fig. 1 is a schematic diagram illustrating a conventional synthesis scheme for implementing signals with a multi-function device, where the scheme includes an Antenna (ANT), an Antenna integration module (ANT interconnected module), a Radio Frequency integration module (Radio Frequency interconnected module), a multiplexer (multiplexer), a Frequency division filter (trimaw), and the like. Referring to fig. 1, it can be understood that ANT1 and ANT2 implement TRX of LB1+ LB2 and LB3+ LB2 in combination with a multiplexer, ANT3 implements MIMO PRX of LB3+ LB2& LB1+ LB2 in combination with one tristaw, and ANT4, ANT5, and ANT6 implement DRX and MIMO DRX of LB3+ LB2& LB1+ LB2, respectively, in combination with two TriSAW.

It can be understood that in the technology, to support LB + LB and 4 × 4mimo combinations, multiplexers and trissaws and the like composed of multiple duplexers/triplexers/quadroplexers are required, the difficulty in customizing devices is increased, and the cost and area of the antenna are increased; the number of MIMO for LB + LB combinations and LB determines the number of antennas, the more combinations, the greater the number of antennas, the greater the antenna cost and area.

In another technique, an antenna array is used to implement a signal synthesis scheme, as shown in fig. 2, the signal synthesis scheme includes an antenna integration module, a radio frequency integration module, a duplexer (Diplexer), a Diversity module (Diversity module), and a switch module (switch module). TRX of LB1 (B20), LB3 (B8), and LB2 (N28A) is implemented by antennas ANT1, ANT2, and ANT3, and DRX of LB1 (B20), LB3 (B8), and LB2 (N28A) is implemented by ANT 4. ANT5, ANT6, and ANT7 implement MIMO PRX and DRX for LB1 (B20), LB3 (B8), and LB2 (N28A), respectively. However, in this technology, similarly, the combination of LB and MIMO of LB are directly related to the number of antennas, and the number of antennas is multiplied due to increase of combination, which causes reduction of antenna efficiency and difficulty in implementation.

Therefore, the antenna system is provided for solving the problems that the LB + LB and 4 x 4MIMO combined requirements of 5G terminal equipment of each operator are contradictory to the limitations of device customization difficulty, antenna cost and area in the prior art due to the rapid development of 5G communication, and how to realize the isolation between LB and LB signals due to the close frequency band of LB + LB, and the like.

The embodiment of the application is used in the combined distribution scene of LB + LB signals in an antenna system.

The scene can be applied to a terminal device, which supports the dual frequencies of LB + LB, for example, the terminal device can support the dual frequencies of LB + LB under dual connection of LTE and NR, that is, an antenna of the terminal device can transmit dual-frequency signals. The terminal device may be, for example, a User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station, a remote terminal, a mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device in the embodiment of the present application may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiving function, a Virtual Reality (VR) terminal device, an Augmented Reality (AR) terminal device, a wireless terminal in industrial control (industrial control), a wireless terminal in self driving (self driving), a wireless terminal in remote medical (remote medical), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in smart city (smart city), a wireless terminal in smart home (smart home), a terminal device in 5G network, or a terminal device in Public Land Mobile Network (PLMN) for future evolution, and the like. The embodiments of the present application do not limit the application scenarios. The methods and steps implemented by the terminal device in the present application may also be implemented by components (e.g., chips or circuits) and the like that can be used for the terminal device. The terminal device and a component (e.g., a chip or a circuit) that can be provided to the terminal device are collectively referred to as a terminal device in the present application.

In the antenna system of the terminal device, the hardware circuit between the antenna and the antenna integrated module and the hardware circuit connected with the radio frequency integrated module are improved, as shown in fig. 3, an antenna tuning module 301 is added to the circuit between the antenna and the antenna integrated module, a radio frequency tuning module 302 is added to the circuit connected with the radio frequency integrated module, and the antenna tuning module 301 and the radio frequency tuning module 302 are controlled through a signal control module 303 implemented by software, so that accurate frequency and matching control from an antenna end to a radio frequency end is realized.

The antenna tuning module 301 is implemented by using a Tunable phase shift circuit (Tunable phase shift circuit system) of LB + LB and MIMO and a Tunable power divider (Tunable power divider), and specifically, the Tunable phase shift circuit is used for controlling antenna beam forming, and the phase shifter can be implemented by using a phase shifter, or can be implemented by using a self-made phase shifter, and specifically, a variable capacitor bank is added at an open end of an antenna radiation patch, so that tuning frequency of a single antenna is expanded to LB1+ LB2+ LB3 \8230; and for the main set antenna, the diversity antenna and the MIMO antenna, a tunable power divider is adopted to carry out frequency allocation of LB + LB signals.

In addition, the isolation between the PRX and the DRX, between the PRX and the DRX of the MIMO antenna, between the main set antenna and the diversity antenna and between the MIMO antenna is improved by adopting a coupler and an odd-even mode method at the signal output end of the tunable power divider;

the variable capacitor bank can be additionally arranged at the short-circuit end of the antenna radiation patch for adjusting impedance matching.

The antenna tuning module may further include an integrated module, such as a switch module, for implementing signal combination switching from the antenna tuning module 301 to the rf tuning module 302.

The radio frequency tuning module 302 can adopt a tunable power divider and a tunable filter bank to realize signal distribution of LB1+ LB2+ \8230, TRX/DRX and MIMO PRX/DRX.

The signal control module 303 of the present application may be configured to control the LB + LB frequencies of the antenna tuning module 301 and the rf tuning module 302 to be consistent, for example, a nonlinear relationship is formed between a capacitor C of the variable capacitor bank and a loading voltage V, and the signal control module 303 may change a loading voltage signal of the variable capacitor bank, and may change capacitance values of the variable capacitor bank of the LB + LB combined antenna tuning module 301 and the rf tuning module 302 at the same time, so as to cooperatively control the frequency and impedance matching of the antenna tuning module 301 and the rf tuning module 302, and implement accurate frequency and matching control from an antenna end to an rf end.

Taking LB + LB combination in conjunction with 4 × 4MIMO as an example, for a first antenna (which may be a main set antenna, a diversity antenna, or a MIMO antenna) among 4 antennas, in the antenna system 40 shown in fig. 4A, when a circuit coupled to the first antenna includes a first tunable phase shift circuit, a first tunable power divider, and a first tunable filter, and when the first antenna is used for receiving signals:

a first tunable phase shift circuit for adjusting a frequency of a first antenna when receiving a signal to transmit a first dual-frequency signal from the first antenna to the first tunable power divider; for example, a first tunable phase shifting circuit coupled to the first antenna may be configured to adjust the frequency of the first antenna to LB1+ LB2, the first antenna may receive a first dual-frequency signal with the frequency of LB1+ LB2, and the first tunable phase shifting circuit may receive the first dual-frequency signal with the frequency of LB1+ LB2 from the first antenna and send the first dual-frequency signal with the frequency of LB1+ LB2 to the first tunable power divider. For example, where the first antenna is a main set antenna, the first dual-frequency signal may be exemplified as LB1+ LB2 PRX.

The first tunable power divider is used for adjusting the frequency of a radio frequency channel between the first tunable power divider and the first antenna integrated module; for example, the frequency of one rf channel between the first tunable power divider and the first antenna integrated module is adjusted to LB1, and the frequency of the other rf channel between the first tunable power divider and the first antenna integrated module is adjusted to LB2.

The first tunable power divider is configured to separate a first dual-frequency signal received from the first tunable phase shift circuit into a first frequency signal and a second frequency signal according to a frequency of a radio frequency channel between the first tunable power divider and the first antenna integrated module, and transmit the first frequency signal and the second frequency signal to the first antenna integrated module; for example, according to the above example, the first tunable power divider may separate LB1PRX + LB 2PRX received from the first antenna into a first frequency signal LB1PRX and a second frequency signal PB2PRX according to frequencies LB1 and LB2 of different radio frequency channels between the first tunable power divider and the antenna integration module;

the first antenna integrated module is used for demodulating a first frequency signal and a second frequency signal received from the first tunable power divider, synthesizing the two demodulated signals into a second dual-frequency signal, and sending the second dual-frequency signal to the radio frequency integrated module; for example, according to the above example, the first antenna integrated module may be provided with a switch module, for example, and may output the first frequency signal LB1PRX and the second frequency signal PB2PRX received from a first tunable power divider of the multiple tunable power dividers to the first radio frequency integrated module on one radio frequency channel, that is, when the first antenna integrated module outputs the output signal of the first tunable power divider, the first antenna integrated module may not output signals of other tunable power dividers, so as to send the second dual-frequency signal LB1PRX + LB 2PRX to the first radio frequency integrated module through one radio frequency channel;

the first radio frequency integrated module is used for transmitting a second dual-frequency signal; for example, the first rf integrated module sends the second dual-frequency signal LB1PRX + LB 2PRX to the first tunable filter through the intermediate coupling circuit;

and the first tunable filter is used for receiving the second dual-frequency signal and distributing the second dual-frequency signal to different radio frequency channels according to the frequency to output. For example, the first tunable filter is configured to output the second dual-frequency signal LB1PRX + LB 2PRX, which is to be received according to the LB1 and LB2 frequencies, through different rf channels, one of which outputs LB1PRX and the other of which outputs LB2 PRX. For example, LB1PRX and LB 2PRX output by the first tunable filter may be output to a processor coupled to the antenna system for processing.

Referring to fig. 4A, a circuit structure of a first antenna in an antenna system may include:

one end a of the first antenna is coupled with the first end b of the first tunable phase-shifting circuit, the second end c of the first tunable phase-shifting circuit is coupled with the first end d of the first tunable power divider, and the second end e of the first tunable power divider is coupled with the first end f of the first antenna integrated module; the third end p of the first tunable power divider is coupled with the second end m of the first antenna integrated module;

the third end g of the first antenna integrated module is coupled with the first end h of the first radio frequency integrated module; the second terminal i of the first rf integrated module is coupled to the first terminal j of the first tunable filter.

Thus, for the first antenna in the antenna system, when receiving signals in the first day, the frequency of the antenna end can be tuned through the first tunable phase shift circuit, and the first tunable power divider is used for distributing signals with different frequencies on the radio frequency channel, and the first tunable filter is used for distributing signals with different frequencies at the radio frequency end, so that accurate frequency control from the antenna end to the radio frequency end and matching control between the frequency and the radio frequency channel are realized.

For an LB + LB combined 4 x 4MIMO antenna system, 4 antennas such as the first antenna may be included, that is, a radio frequency main set antenna, a radio frequency diversity antenna, a MIMO main set antenna, and a MIMO diversity antenna, so as to implement frequency matching control from an antenna end to a radio frequency end in the LB + LB combined 4 x 4MIMO antenna system.

It will be appreciated that the first antenna may also be used to transmit signals when it is acting as the main set of antennas at radio frequencies. When the first antenna is used to transmit signals, the circuitry coupled to the primary set of antennas may also include a second tunable power divider, as shown in fig. 4B. The second tunable power divider is coupled between the first rf integrated module and the first tunable filter. As can be seen from fig. 4A and 4B, the first terminal r of the second tunable power divider is coupled to the second terminal of the first rf integrated module, and the second terminal q of the second tunable power divider is coupled to the first terminal j of the first tunable filter. When the first antenna is used for receiving signals, the first radio frequency integrated module is used for sending the second dual-frequency signal LB1PRX + LB 2PRX to the second tunable power divider; the second tunable power divider is used for receiving a second dual-frequency signal LB1PRX + LB 2PRX sent by the first radio frequency integrated module and sending the second dual-frequency signal LB1PRX + LB 2PRX to the first tunable filter; and the first tunable filter is used for receiving the second dual-frequency signal LB1PRX + LB 2PRX transmitted by the second tunable power divider.

When the first antenna shown in fig. 4B is a main set antenna for radio frequency, and the main set antenna is used for transmitting signals:

the second tunable power divider is further configured to synthesize two signals received from radio frequency channels with different frequencies into a third dual-frequency signal, and send the third dual-frequency signal to the first radio frequency integrated module; for example, the two signals received by the second tunable power divider from the two radio frequency channels are LB1TX and LB2 TX, the second tunable power divider may combine the LB1TX and the LB2 TX on one radio frequency channel to transmit to the first radio frequency integrated module, and the combined third dual-frequency signal may be, for example, LB1TX + LB2 TX (LB 1+ LB2 TX).

The first radio frequency integrated module is used for sending the third dual-frequency signal to the antenna integrated module; for example, the first rf integrated module sends the third dual-frequency signal LB1TX + LB2 TX to the first antenna integrated module.

The first antenna integrated module is further configured to demodulate a third dual-frequency signal received from the first radio frequency integrated module, separate the third dual-frequency signal into a third frequency signal and a fourth frequency signal according to a frequency of a radio frequency channel between the first antenna integrated module and the first tunable power divider, and send the third frequency signal and the fourth frequency signal to the first tunable power divider; for example, after the first antenna integrated module demodulates the third dual-frequency signal LB1TX + LB2 TX, assuming that the first tunable power divider adjusts the frequencies of the two radio frequency channels between the first tunable power divider and the first antenna integrated module to LB1 and LB2, the first antenna integrated module may separate the LB1TX + LB2 TX into the third frequency signal LB1TX and the fourth frequency signal LB2 TX, transmit the LB1TX on the radio frequency channel with the frequency of LB1, and transmit the LB2 TX on the radio frequency channel with the frequency of LB2.

The first tunable power divider is further used for adjusting the frequency of a radio frequency channel between the first tunable power divider and the first antenna integrated module; synthesizing a third frequency signal and a fourth frequency signal received from the first antenna integrated module into a fourth double-frequency signal, and sending the fourth double-frequency signal to the first tunable phase-shifting circuit; for example, when the first tunable power divider receives the third frequency signal LB1TX and the fourth frequency signal LB2 TX, in order to enable the first antenna to transmit the dual-frequency signals, the first tunable power divider may synthesize the third frequency signal LB1TX and the fourth frequency signal LB2 TX into a fourth dual-frequency signal LB1TX + LB2 TX, and send the fourth dual-frequency signal LB1TX + LB2 TX to the first tunable phase shift circuit.

And the first tunable phase shift circuit is further used for adjusting the frequency of the main set antenna so as to transmit a fourth dual-frequency signal received from the first tunable power divider through the main set antenna. That is, when the first tunable phase shift circuit adjusts the frequency of the rf main set antenna to be the dual frequencies LB1+ LB2, the rf main set antenna can transmit the fourth dual frequency signal LB1TX + LB2 TX received from the first tunable phase shift circuit.

Therefore, when the main set antenna of the radio frequency transmits a dual-frequency signal, the frequency matching control from the antenna end to the radio frequency end can be realized through the first tunable phase shift circuit, the first tunable power divider and the second tunable power divider coupled with the main set antenna of the radio frequency.

It will be appreciated that the main set of antennas at radio frequency may be used for both transmission and reception of signals, and that there may be transmission of both the transmit signal TX and the receive signal PRX on the radio frequency channel coupled to the first antenna. TX and PRX may transmit in Frequency Division, i.e., transmit and receive signals simultaneously in Frequency Division Duplex (TDD) mode. As shown in fig. 4C, the combined signal LB1 TRX + LB2TRX may be transmitted on the rf channel coupled to the first antenna, or the combined signal LB1 TRX + LB2TRX may be transmitted after separation. Wherein, the LB1 TRX comprises LB1TX and LB1PRX, and the LB2TRX comprises LB2 TX and LB2 PRX.

It is understood that when the composite signal, such as the first dual-frequency signal, the second dual-frequency signal, the third dual-frequency signal, and the fourth dual-frequency signal, is transmitted on one rf channel, the composite signal may also be transmitted in TDD mode, for example, the first dual-frequency signal LB1PRX + LB 2PRX transmits LB1PRX and LB 2PRX simultaneously in TDD mode. Of course, the TDD mode is also applicable to other dual frequency signals of the present application.

Of course, to implement LB + LB and 4 × 4MIMO combined received signals, on the basis of fig. 4C, when the first antenna is a main set antenna of radio frequencies, the antenna system may further include a second antenna (e.g., a diversity antenna) of radio frequencies, the first MIMO antenna and the second MIMO antenna. As shown in fig. 4D, the antenna system includes a main antenna ANT1 of radio frequency, a diversity antenna ANT2, a second antenna integrated module, a second radio frequency integrated module, a first MIMO antenna ANT3, and a second MIMO antenna ANT4, in addition to a first tunable phase shift circuit, a first tunable power divider, and a first tunable filter coupled to the ANT 1; the second tunable phase shift circuit, the third tunable power divider and the second tunable filter are coupled with the ANT 2; the third tunable phase shift circuit, the fourth tunable power divider and the third tunable filter are coupled with the ANT 3; a fourth tunable phase shift circuit, a fifth tunable power divider, and a fourth tunable filter coupled to the ANT 4.

Referring to fig. 4D, similarly to the process of ANT1 for receiving a signal, ANT2 is used for receiving a signal:

the second tunable phase shift circuit is used for adjusting the frequency when the diversity antenna receives the signal, receiving a fifth dual-frequency signal from the diversity antenna and sending the fifth dual-frequency signal to the third tunable power divider; for example, the first tunable phase shift circuit connected to the ANT2 is used to adjust the frequency of the ANT2 to LB1+ LB2, the ANT2 may receive the fifth dual-frequency signal LB1+ LB2DRX with the frequency of LB1+ LB2, and the second tunable phase shift circuit may receive the fifth dual-frequency signal LB1+ LB2DRX from the ANT2 and transmit the fifth dual-frequency signal LB1+ LB2DRX to the third tunable power divider.

The third tunable power divider is used for adjusting the frequency of a radio frequency channel between the third tunable power divider and the first antenna integrated module; for example, the frequency of one rf channel between the third tunable power divider and the first antenna ic is adjusted to LB1, and the frequency of the other rf channel between the third tunable power divider and the first antenna ic is adjusted to LB2.

Separating a fifth dual-frequency signal received from the second tunable phase shift circuit into a fifth frequency signal and a sixth frequency signal according to the frequency of a radio frequency channel between the third tunable power divider and the first antenna integrated module, and transmitting the fifth frequency signal and the sixth frequency signal to the first antenna integrated module; for example, according to the above example, the third tunable power divider may separate the LB1DRX + LB2DRX received from the ANT2 into the fifth frequency signal LB1DRX and the sixth frequency signal LB2DRX according to the frequencies LB1 and LB2 of different radio frequency channels with the first antenna integrated module;

the first antenna integrated module is used for demodulating a fifth frequency signal and a sixth frequency signal received from the third tunable power divider, synthesizing the two modulated signals into a sixth dual-frequency signal, and sending the sixth dual-frequency signal to the first radio frequency integrated module; for example, according to the above example, the first antenna integrated module may be provided with a switch module, for example, and may output the fifth frequency signal LB1DRX and the sixth frequency signal PB 2DRX received from the third tunable power divider to the first radio frequency integrated module on one radio frequency channel, that is, the sixth frequency signal LB1DRX + LB2DRX is sent to the first radio frequency integrated module through one radio frequency channel;

the first radio frequency integrated module is used for sending the sixth double-frequency signal to the second tunable filter; for example, the first radio frequency integrated module sends the sixth dual-frequency signal LB1DRX + LB2DRX to the first tunable filter;

and the second tunable filter is used for receiving the sixth dual-frequency signal from the first radio frequency integrated module and distributing the sixth dual-frequency signal on different radio frequency channels according to the frequency to output. For example, the second tunable filter is configured to output a sixth dual frequency signal LB1DRX + LB2DRX to be received according to a difference between LB1 and LB2 frequencies through different radio frequency channels, one radio frequency channel outputting LB1DRX and the other radio frequency channel outputting LB2 DRX. For example, the LB1DRX and LB2DRX output by the second tunable filter may be output to a processor connected to the antenna system for further processing.

When the ANT3 antenna is used for receiving signals:

the third tunable phase shift circuit is used for adjusting the frequency when the first MIMO antenna receives the signal, receiving a seventh dual-frequency signal from the first MIMO antenna and sending the seventh dual-frequency signal to the fourth tunable power divider; for example, the third tunable phase shift circuit connected to the ANT3 is configured to adjust the frequency of the ANT3 to LB1+ LB2, the ANT3 may receive the seventh dual-frequency signal LB1+ LB2MIMO PRX having the frequency of LB1+ LB2, and the third tunable phase shift circuit may receive the seventh dual-frequency signal LB1+ LB2MIMO PRX from the ANT3 and transmit the seventh dual-frequency signal LB1+ LB2MIMO PRX to the fourth tunable power divider.

The fourth tunable power divider is used for adjusting the frequency of a radio frequency channel between the fourth tunable power divider and the second antenna integration module; for example, the frequency of one rf channel between the fourth tunable power splitter and the second antenna integrated module is adjusted to LB1, and the frequency of the other rf channel between the fourth tunable power splitter and the second antenna integrated module is adjusted to LB2.

The fourth tunable power divider is used for separating a seventh dual-frequency signal received from the third tunable phase shift circuit into a seventh frequency signal and an eighth frequency signal according to the frequency of a radio frequency channel between the fourth tunable power divider and the second antenna integrated module, and transmitting the seventh frequency signal and the eighth frequency signal to the second antenna integrated module; for example, according to the above example, the fourth tunable power divider may separate LB1MIMO PRX + LB2MIMO PRX received from the third tunable phase shift circuit into a seventh frequency signal LB1MIMO PRX and an eighth frequency signal PB 2MIMO PRX according to frequencies LB1 and LB2 of different radio frequency channels with the second antenna integration block.

The second antenna integrated module is configured to demodulate a seventh frequency signal and an eighth frequency signal received from the fourth tunable power divider, synthesize the demodulated two signals into an eighth dual-frequency signal, and send the eighth dual-frequency signal to the radio frequency integrated module; for example, according to the above example, the second antenna integrated module may be provided with a switch module, for example, and may output the seventh frequency signal LB1MIMO PRX and the eighth frequency signal PB 2MIMO PRX received from the fourth tunable power divider to the second radio frequency integrated module on one radio frequency channel, that is, the eighth dual-frequency signal LB1MIMO PRX + LB2MIMO PRX is sent to the second radio frequency integrated module through one radio frequency channel;

the second radio frequency integrated module is used for sending the eighth dual-frequency signal to the third tunable filter; for example, the second radio frequency integrated module sends the eighth dual-frequency signal LB1MIMO PRX + LB2MIMO PRX to the third tunable filter;

and the third tunable filter is used for receiving the eighth dual-frequency signal from the second radio frequency integrated module and distributing the eighth dual-frequency signal on different radio frequency channels according to the frequency to output. For example, the third tunable filter is configured to output the eighth dual-frequency signal LB1MIMO PRX + LB2MIMO PRX to be received according to the difference between LB1 and LB2 frequencies through different radio frequency channels, where one radio frequency channel outputs LB1MIMO PRX and the other radio frequency channel outputs LB2MIMO PRX. For example, LB1MIMO PRX and LB2MIMO PRX output by the third tunable filter may be output to a processor connected to the antenna system for processing.

ANT4 antenna is used for receiving signals:

the fourth tunable phase shift circuit is used for adjusting the frequency when the second MIMO antenna receives the signal, receiving a ninth dual-frequency signal from the second MIMO antenna and sending the ninth dual-frequency signal to the fifth tunable power divider; for example, the fourth tunable phase shift circuit connected to the ANT4 is configured to adjust the frequency of the ANT4 to LB1+ LB2, the ANT4 may receive the ninth dual-frequency signal LB1MIMO DRX + LB2MIMO DRX with the frequency of LB1+ LB2, and the fourth tunable phase shift circuit may receive the ninth dual-frequency signal LB1MIMO DRX + LB2MIMO DRX from the ANT4 and transmit the ninth dual-frequency signal LB1MIMO DRX + LB2MIMO DRX to the fifth tunable power splitter.

The fifth tunable power divider is used for adjusting the frequency of a radio frequency channel between the fifth tunable power divider and the second antenna integration module; for example, the frequency of one rf channel between the fifth tunable power divider and the second antenna integrated module is adjusted to LB1, and the frequency of another rf channel between the fifth tunable power divider and the second antenna integrated module is adjusted to LB2.

The fifth tunable power divider is configured to separate a ninth dual-frequency signal received from the fourth tunable phase shift circuit into a ninth frequency signal and a tenth frequency signal according to a frequency of a radio frequency channel between the fifth tunable power divider and the second antenna integrated module, and transmit the ninth frequency signal and the tenth frequency signal to the second antenna integrated module; for example, according to the above example, the fifth tunable power divider may separate LB1MIMO DRX + LB2MIMO DRX received from the fourth tunable phase shift circuit into a ninth frequency signal LB1MIMO DRX and a tenth frequency signal PB 2MIMO DRX according to frequencies LB1 and LB2 of different radio frequency channels with the second antenna integration module.

The second antenna integrated module is used for demodulating a ninth frequency signal and a tenth frequency signal received from the fourth tunable power divider, synthesizing the demodulated signals into a tenth dual-frequency signal, and sending the tenth dual-frequency signal to the second radio frequency integrated module; for example, according to the above example, the second antenna integrated module may be provided with a switch module, for example, and may output the ninth frequency signal LB1MIMO DRX and the tenth frequency signal PB 2MIMO DRX received from the fifth tunable power divider to the second radio frequency integrated module on one radio frequency channel, that is, the tenth frequency signal LB1MIMO DRX + LB2MIMO DRX is sent to the second radio frequency integrated module through one radio frequency channel;

the second radio frequency integrated module is used for sending the tenth dual-frequency signal to the third tunable filter; for example, the second radio frequency integrated module sends the tenth dual-frequency signal LB1MIMO DRX + LB2MIMO DRX to the fourth tunable filter;

and the fourth tunable filter is used for distributing the tenth dual-frequency signal received from the second radio frequency integrated module on different radio frequency channels according to the frequency and outputting the tenth dual-frequency signal. For example, the fourth tunable filter is configured to output the tenth dual frequency signal LB1MIMO DRX + LB2MIMO DRX to be received according to the difference between LB1 and LB2 frequencies through different radio frequency channels, one radio frequency channel outputting LB1MIMO DRX, and the other radio frequency channel outputting LB2MIMO DRX. For example, LB1MIMO DRX and LB2MIMO DRX output by the fourth tunable filter may be output to a processor connected to the antenna system for processing.

The connection mode between the ANT2 and the antenna integrated module and the radio frequency integrated module is similar to that of the ANT1, and refer to fig. 4D:

one end w of the ANT2 is coupled with the first end x of the second tunable phase-shifting circuit, the second end v of the second tunable phase-shifting circuit is coupled with the first end u of the third tunable power divider, and the second end s of the third tunable power divider is coupled with the fourth end y of the first antenna integrated module; the third end t of the third tunable power divider is coupled with the fifth end z of the antenna integration module;

the sixth end n of the first antenna integrated module is coupled with the third end o of the first radio frequency integrated module; the four terminal k of the first rf integrated module is coupled to the first terminal l of the second tunable filter.

The coupling mode of the ANT3, the third tunable phase-shifting circuit, the fourth tunable power divider, the second antenna integrated module, the second radio frequency integrated module and the third tunable filter is similar to the coupling mode of the ANT2 in an antenna system; the coupling mode of the ANT4, the fourth tunable phase shift circuit, the fifth tunable power divider, the second antenna integrated module, the second radio frequency integrated module and the fourth tunable filter is similar to the coupling mode of the ANT2 in the antenna system. And will not be described in detail herein.

It should be noted that the first antenna integrated module and the second antenna integrated module may be different modules or the same module; the first rf integrated module and the second rf integrated module may be different modules or the same module.

The devices in the antenna tuning module 301 and the rf tuning module 302 can be controlled by software through the signal control module 303 to adjust the frequency of the antenna, perform frequency allocation, and perform signal allocation.

Therefore, the antenna tuning module and the radio frequency tuning module can be added, the 4 x 4MIMO combination of various LB + LB can be realized through the signal control module, the number of the antenna, the multiplexer and the multi-frequency filter under the 4 x 4MIMO combination of various complicated LB + LB can be reduced, and the occupied area of a Printed Circuit Board (PCB) can be reduced.

With reference to the antenna system shown in fig. 4D, a control flow of the LB + LB compatible MIMO antenna scheme and some implementation manners of the antenna tuning module 301 and the radio frequency tuning module 302 are described below, where taking the antenna system for receiving signals as an example, with reference to fig. 5, the control flow of the present application may include:

501. the antenna system determines whether the dual frequency compatible MIMO combination is within an achievable range.

In some embodiments, a list of supportable frequencies and MIMO specifications may be maintained in the terminal device, for example, the list may include an indication of frequencies supporting LB1, LB2, LB3, \8230, LBn, etc., and may also include an indication of frequencies supporting 2 x 2mimo, 4 x 4mimo, etc. When the terminal device receives an indication from the network side, for example, receives a first indication from the base station, and instructs the terminal device to transmit an LB1+ LB2 combined frequency-compatible 4 × 4MIMO signal, the terminal device may check, according to the first indication, whether or not frequency and MIMO indicated by the first indication are supported in the list. If so, execution continues at step 502, and if not, the flow ends.

Step 501 may be determined by a software program corresponding to the signal control module 303 in the antenna system.

In some embodiments, as shown in fig. 6, the control flow of the modules in the hardware circuit structure of fig. 4D provided by this application by the software program of the signal control module 303 of this application is shown. The signal control module 303 may be divided into a function analysis module, an LB + LB main diversity antenna control module, and an LB + LB MIMO antenna control module according to functions. The LB + LB main diversity antenna control module is mainly configured to control LB + LB signals of the main diversity antenna and the rf diversity antenna, such as TRX and DRX of LB1+ LB2, and includes control of the first tunable phase shift circuit, the first tunable power divider, the first tunable filter, the third tunable power divider, the first antenna integration module, and the first rf integration module. The LB + LB MIMO antenna control module is mainly configured to control LB + LB signals of the MIMO antenna, such as PRX and DRX of LB2+ LB3, and includes control of the second tunable phase shift circuit, the second tunable power divider, the second tunable filter, the second antenna integrated module, and the second radio frequency integrated module. The function analysis module is mainly used for function analysis, feedback and signal synchronization of the main set, diversity and MIMO. The functional analysis module shown in fig. 6 includes a plurality of signal synchronization modules for signal synchronization of the main set, diversity & MIMO.

Referring to fig. 6, the LB + LB main diversity antenna control module may determine whether the terminal device supports the LB + LB combined frequency indicated by the base station, and if so, the LB + LB main diversity antenna control module controls the antenna tuning module 301 to perform the subsequent procedure, for example, the LB + LB main diversity antenna control module sends an indication to the first tunable phase shifting circuit to perform step 502; the LB + LB MIMO antenna control module may determine whether the terminal device supports MIMO indicated by the base station, and if so, the LB + LB MIMO antenna control module may continue to control the antenna tuning module 301 to perform a subsequent procedure, for example, the LB + LB MIMO antenna control module sends an indication to the second tunable phase shifting circuit to perform step 502.

502. The antenna system adjusts the frequency of the signals received by the main set antenna, the diversity antenna and the MIMO antenna of the radio frequency through the antenna tuning module 301.

When the first tunable phase shift circuit and the second tunable phase shift circuit receive the indication of the LB + LB main diversity antenna control module, as shown in fig. 6, the first tunable phase shift circuit connected to the main diversity antenna may 1) select the LB + LB antenna in the terminal device; 2) The frequencies of the LB + LB antennas are adjusted to steer the beams of the main set antennas to be formed at the adjusted frequencies. The second tunable phase shifting circuit and the first tunable phase shifting circuit connected to the diversity antenna are implemented in a similar manner.

When the third tunable phase shift circuit and the fourth tunable phase shift circuit receive an indication from the LB + LB MIMO antenna control module, as shown in fig. 6, the second tunable phase shift circuit and the fourth tunable phase shift circuit connected to the MIMO antenna may: 1) Selecting an LB + LB MIMO antenna in the terminal equipment; 2) Adjusting the frequency of the LB + LB MIMO antenna to control the beam of the LB + LB MIMO antenna to be formed according to the adjusted frequency.

Illustratively, the first tunable phase shift circuit includes a plurality of variable capacitor banks connected to the open end of the radiation patch of the main set antenna ANT1, and the LB + LB main diversity antenna control module may control the capacitance variation of the plurality of variable capacitor banks to adjust the transceiving frequency of the main set antenna ANT1 to be LB1+ LB2, that is, the transceiving frequency of the main set antenna ANT1 is LB1 PRX/TX + LB2 PRX/TX. Similarly, the LB + LB main diversity antenna control module may further control the capacitance value of a plurality of variable capacitor banks of the second tunable phase shift circuit connected to the radiation patch of the diversity antenna ANT2 to be varied to adjust the frequency at which the diversity antenna ANT2 receives the signal to be LB1+ LB2, that is, the received signal of the diversity antenna ANT2 is LB1+ LB2 DRX.

Similarly, the third tunable phase shift circuit and the fourth tunable phase shift circuit have similar structures to the first tunable phase shift circuit. For example, the third tunable phase shift circuit may include a second variable capacitor bank connected to an open end of a radiation patch of the MIMO antenna ANT3, the second variable capacitor bank being configured to adjust a frequency at which the ANT3 receives a signal. It is understood that the LB + LB MIMO antenna control module may control the capacitance variation of the plurality of second variable capacitor banks of the third tunable phase shift circuit connected to the radiation patch of the ANT3 to adjust the frequency of the received signal of the MIMO antenna ANT3 to be LB1+ LB2, that is, the MIMO antenna ANT3 may receive LB1MIMO PRX + LB2MIMO PRX. Similarly, the fourth tunable phase shift circuit is configured to adjust the frequency of ANT4 to LB1+ LB2, such that ANT4 may receive LB1MIMO PRX + LB2MIMO DRX.

503. The antenna system separates the dual-frequency signals received by the main set antenna, the diversity antenna and the MIMO antenna according to the frequency of the radio frequency channel through the antenna tuning module 301.

For example, referring to fig. 4D, after the LB + LB master diversity antenna control module adjusts the frequencies of the master antenna ANT1 and the diversity antenna ANT2, the LB + LB master diversity antenna control module may control a first tunable power divider corresponding to the master antenna ANT1 in the antenna tuning module 301, so that the first tunable power divider adjusts the frequency of a radio frequency channel between the first tunable power divider and the antenna integration module to LB1 and LB2, and when receiving the synthesized signal LB1PRX + LB 2PRX sent by the first tunable phase shift circuit, the first tunable power divider may separate the LB1PRX + LB 2PRX into LB1PRX and LB 2PRX, that is, the LB1PRX and LB 2PRX are respectively transmitted to the first antenna integration module on two radio frequency channels. Similarly, the LB + LB main diversity antenna control module may control a third tunable power divider corresponding to the diversity antenna NAT2 in the antenna tuning module 301, so that the third tunable power divider transmits the LB1DRX and the LB2DRX to the first antenna integrated module on two radio frequency channels, respectively.

For example, after the LB + LB MIMO antenna control module adjusts the frequencies of the MIMO antennas ANT3 and ANT4, the LB + LB MIMO antenna control module may control the fourth tunable power divider and the fifth tunable power divider corresponding to the MIMO antennas ANT3 and ANT4 in the antenna tuning module 301, so as to separate LB1MIMO PRX + LB2MIMO PRX received by the MIMO antenna ANT3 and transmit the same on two radio frequency channels to the second antenna integrated module, and separate LB1MIMO DRX + LB2MIMO DRX received by the ANT4 and transmit the same on two radio frequency channels to the second antenna integrated module.

That is, the first tunable power divider shown in fig. 6 allocates the frequencies of the main set antennas, and the fourth tunable power divider allocates the frequencies of the MIMO antennas.

In some embodiments, the circuit structures of the first tunable power divider, the second tunable power divider, the third tunable power divider, the fourth tunable power divider, and the fifth tunable power divider are similar. The first tunable power divider may include: each path of power divider in the multi-path power divider comprises a microstrip transmission line, a second variable capacitor bank and a direct current bias circuit, wherein the second variable capacitor bank is connected with the microstrip transmission line; and the second variable capacitor bank and the direct current bias circuit are used for adjusting the frequency of the microstrip transmission line. A microstrip transmission line may be understood as a radio frequency channel that transmits signals.

For example, fig. 7 is a circuit diagram of a first tunable power divider, in which a Wilkinson power divider + ferroelectric thin film variable capacitor structure may be adopted as the multi-path power divider. The Wilkinson power divider may adopt an N-way power divider structure of equal power or unequal power, which includes a signal input terminal 71 (connected to the output terminal of the first tunable phase shift circuit) and two or more microstrip transmission lines. Fig. 7 illustrates 3

microstrip transmission lines

73, 74, and 75, and fig. 4D illustrates an N-way power divider structure including 2 microstrip transmission lines. The microstrip transmission line can be a single-section converter, a multi-section converter or a gradient transmission line structure, and can be matched with different LC matching networks to adjust the impedance of the microstrip transmission line, so as to realize different power ratios and adjust the frequency of each channel. For the combination of LB + LB, if there is no special case, the power proportion of each microstrip transmission line is considered to be the same. Each microstrip transmission line of the N-way power divider may be added with 2 or more short-circuit

tunable branches

76 and 77, where the short-circuit tunable branch includes a second variable capacitor bank and a dc bias circuit (not shown in fig. 7), a dielectric layer of the second variable capacitor bank may be a ferroelectric thin film material, such as BST or PZT, and the LB + LB main diversity antenna control module may change a voltage on the second variable capacitor bank to change a capacitance value, so as to adjust frequencies of the

microstrip transmission lines

73, 74, and 75 to be LB1/LB3, LB2/LB4, and LB5/LB6, respectively.

According to the principle of fig. 7, the first tunable power splitter connected to the primary antenna ANT1 shown in fig. 4D separates LB PRX + LB 2PRX corresponding to the primary antenna ANT1 and transmits the LB PRX + LB 2PRX to the first antenna integrated module on two microstrip transmission lines, where one microstrip transmission line transmits LB1PRX to the first antenna integrated module and one microstrip transmission line transmits LB 2PRX to the first antenna integrated module;

a third tunable power divider connected with the diversity antenna ANT2 separates LB1DRX + LB2DRX corresponding to the diversity antenna ANT2 and transmits the separated parts to the first antenna integrated module on two microstrip transmission lines, one microstrip transmission line transmits LB1DRX to the first antenna integrated module, and the other microstrip transmission line transmits LB2DRX to the first antenna integrated module;

a fourth tunable power divider connected to the MIMO antenna ANT3 separates LB1+ LB2MIMO PRX corresponding to the MIMO antenna ANT3 and transmits the LB1MIMO PRX to the second antenna integrated module on two microstrip transmission lines, one microstrip transmission line transmits the LB1MIMO PRX to the second antenna integrated module, and one microstrip transmission line transmits the LB2MIMO PRX to the second antenna integrated module;

and the fifth tunable power divider connected with the MIMO antenna ANT4 separates LB1+ LB2MIMO DRX corresponding to the MIMO antenna ANT4 and transmits the separated LB1+ LB2MIMO DRX to the second antenna integrated module on two microstrip transmission lines, one microstrip transmission line transmits the LB1MIMO DRX to the second antenna integrated module, and the other microstrip transmission line transmits the LB2MIMO DRX to the second antenna integrated module.

Furthermore, in some embodiments, the first tunable power divider may further include: and each first tunable impedance in the plurality of first tunable impedances is bridged between the adjacent microstrip transmission lines and is used for carrying out port isolation on the adjacent microstrip transmission lines.

Illustratively, referring to fig. 7, a first tunable impedance 78 is connected between the

microstrip transmission lines

73, 74, and 75 for implementing port isolation between the transmission lines, and the first tunable impedance 78 shown in fig. 7 is a tunable resistor, and may also be implemented by a tunable LC network. Typically, the real part of the first tunable impedance 78 is required to be greater than 1k.

Similarly, the second tunable power splitter, the third tunable power splitter, the fourth tunable power splitter, and the fifth tunable power splitter may also include a plurality of first tunable impedances, and the principle of which may be referred to in the description of the first tunable power splitter.

504. The antenna system detects whether the frequency of the main set antenna, the frequency of the diversity antenna and the frequency of the MIMO antenna meet requirements or not, and detects whether the isolation among the main set antenna, the diversity antenna and the MIMO antenna meets requirements or not. If the requirement is determined not to be met, the process returns to step 502 to continue the execution, and if the requirement is determined to be met, the process continues to step 505.

After the LB + LB master diversity antenna control module completes the frequency adjustment of the first tunable power splitter and the third tunable power splitter, and the LB + LB MIMO antenna control module completes the frequency adjustment of the fourth tunable power splitter and the fifth tunable power splitter, in order to improve the isolation between the antennas, for example, a coupler and an odd-even mode method may be further used between the signal output end of the first tunable power splitter and the antenna integration module to improve the isolation between the master diversity antennas PRX and DRX, between the MIMO antennas PRX and DRX, and between the master diversity antennas and the MIMO antennas.

In some embodiments, a coupler and a plurality of second tunable impedances (not shown in fig. 4D) are connected between the first tunable power divider and the first antenna integration module for performing inter-antenna isolation for the main set antenna, the diversity antenna, and the MIMO antenna. Thus, the LB + LB main diversity antenna control module may also achieve isolation between the antennas by controlling the coupler and the plurality of second tunable impedances. Similarly, a coupler and a tunable impedance may be connected between the third tunable power divider and the first antenna integrated module; couplers and tunable impedances may also be connected between the fourth tunable power splitter and the fifth tunable power splitter and the second antenna integrated module.

For example, the circuit structure of the coupler and the plurality of second tunable impedances, which are connected to the first antenna integration module, of the first tunable power divider may be as shown in fig. 8. A coupler 81, a signal detection system 84, a second tunable impedance 82 and a tunable large resistor 83 are connected between the first tunable power divider and the first antenna integrated module. The coupler 81 may adopt a directional/reverse/steering coupler structure, and similar to the tuned power divider, for different LB1+ LB2 combinations, a tunable short-circuit stub may be added to the microstrip transmission line where the coupler 81 is located, so as to adjust the frequency of the coupler 81, a through port 811 of the coupler 81 transmits a signal to the first antenna integrated module, and a coupling port 812 of the coupler 81 feeds back the signal to the signal detection system 84. In addition, the odd-even mode method is further adopted to improve the isolation between the antennas, for example, in fig. 8, a second tunable impedance 82 is used for bridging between PRX and DRX, MIMO PRX and MIMI DRX signals, and the second tunable impedance 82 may be implemented by using a tunable resistor or a tunable LC network, and generally, the real part of the second tunable impedance 82 may be required to be greater than 1k. Signals of the main set antenna, signals of the diversity antenna and signals of the MIMO antenna can be directly isolated by using the tunable large resistor 83, and the resistance value of the tunable large resistor 83 may be generally greater than 5k.

The signal detection system 84 can detect whether the frequency of the microstrip transmission line on which the coupler is located meets the requirement, for example, whether the frequency is adjusted to the LB1 frequency, according to the signal input by the coupler 81, and if the frequency of the microstrip transmission line is not met, the frequency of the microstrip transmission line can be continuously adjusted. The signal detection system 84 may further detect whether the resistance values of the second tunable impedance 82 and the tunable large resistor 83 meet the requirement, that is, whether the isolation between the antennas meets the requirement, and if not, may further adjust the resistance values of the second tunable impedance 82 and the tunable large resistor 83.

505. The antenna system performs signal reception from the antenna side to the radio frequency side.

After the LB + LB master diversity antenna control module controls the signal detection system 84 in the antenna tuning module 301 to complete detection and meet the requirements, as shown in fig. 6, the LB + LB master diversity antenna control module may control the antenna integration module connected to the radio frequency master diversity antenna ANT1 to implement: 1) Selecting an LB + LB combination; 2) And respectively demodulating and separating the LB + LB PRX signals into two PRX signals and outputting the two PRX signals to the first radio frequency integrated module. For example, as shown in fig. 4D, the first antenna integrated module selects LB1PRX and LB 2PRX received from the first tunable power divider to demodulate and then perform signal synthesis, and obtains a dual-frequency signal LB1PRX + LB 2PRX, and sends the dual-frequency signal LB1PRX + LB 2PRX to the first radio frequency integrated module, so as to implement signal reception from the antenna end to the radio frequency end. Similarly, for the diversity antenna ANT2, the antenna integration module may select LB1DRX and LB2DRX to perform signal synthesis, so as to obtain a dual-frequency signal LB1DRX + LB2DRX, so as to implement signal reception between the ANT2 and the radio frequency end.

Similarly, as shown in fig. 6, the LB + LB MIMO antenna control module may control the antenna integration module connected to the MIMO antenna to implement: 1) Selecting an LB + LB MIMO combination; 2) And respectively demodulating DRX and PRX signals of the LB + LB MIMO and outputting the DRX and PRX signals to the second radio frequency integrated module. For example, as shown in fig. 4D, the second antenna integrated module selects two signals LB1MIMO PRX and LB2MIMO PRX received from the fourth tunable power divider, demodulates the two signals, and synthesizes the two signals into one dual-frequency signal LB1MIMO PRX + LB2MIMO PRX, so as to implement signal reception between the MIMO antenna ANT3 and the radio frequency end; the second antenna integrated module selects the two signals LB1MIMO DRX and LB2MIMO DRX received from the fifth tunable power divider to demodulate and synthesize a dual-frequency signal LB1MIMO DRX + LB2MIMO DRX, so as to implement signal reception between the MIMO antenna ANT4 and the radio frequency end.

In some embodiments, the first antenna integrated module may include an integrated module, for example, may be a switch module, and is configured to implement signal combination switching from an antenna end to a radio frequency end, that is, select two frequency signals received from one antenna ANT1 through the switch module, combine the two frequency signals into a dual-frequency signal, output the dual-frequency signal to the first radio frequency integrated module, and output signals of other antennas, for example, ANT 2. Similarly, the second antenna integration module may also include a switch module.

506. The antenna system transmits signals to the rf tuning module 302 of the rf front end through the first rf integrated module and the second rf integrated module.

For example, referring to fig. 4d, lb + lb main diversity antenna control module controls a first rf integration module connected to a main diversity antenna to implement: the received dual-frequency signal LB1PRX + LB 2PRX corresponding to the antenna ANT1 of the main set is transmitted to the second tunable power divider of the radio frequency tuning module 301, and the received dual-frequency signal LB1DRX + LB2DRX corresponding to the antenna ANT2 of the diversity set is transmitted to the second tunable filter of the radio frequency tuning module 301.

The LB + LB MIMO antenna control module controls a second radio frequency integrated module connected with the MIMO antenna to realize: and transmitting the received double-frequency signal LB1MIMO PRX + LB2MIMO PRX signal corresponding to the MIMO antenna ANT3 to a third tunable filter of the radio frequency tuning module 301, and transmitting the received double-frequency signal LB1MIMO DRX + LB2MIMO DRX signal corresponding to the MIMO antenna ANT4 to a fourth tunable filter of the radio frequency tuning module.

507. The antenna system performs signal separation on the dual-frequency signal corresponding to the main set antenna, the dual-frequency signal corresponding to the diversity antenna, and the dual-frequency signal corresponding to the MIMO antenna through the rf tuning module 302, and then outputs the signals.

It can be understood that the rf tuning module 302 is configured to separate and output PRX, DRX, MIMO PRX, and MIMO DRX of the LB + LB signal according to different frequencies. Equivalently, as shown in fig. 6, the LB + LB main antenna control module controls the first tunable filter connected to the main antenna to implement: and the LB + LB MIMO antenna control module controls a third tunable filter connected with the MIMO antenna to realize that: and (4) separating the signals of the LB + LB combined MIMO PRX and outputting the signals.

Thus, it can be understood that, referring to fig. 4D, the first tunable filter is configured to separate the dual-frequency signal LB1PRX + LB 2PRX of ANT1 into LB1PRX and LB 2PRX according to different frequencies and output the two signals on different radio frequency channels;

the second tunable filter is used for separating a double-frequency signal LB1DRX + LB2DRX of the ANT2 into LB1DRX and LB2DRX according to different frequencies and then outputting the signals on different radio frequency channels;

the third tunable filter is used for separating a double-frequency signal LB1MIMO PRX + LB2MIMO PRX of the ANT3 into LB1MIMO PRX and LB2MIMO PRX according to different frequencies and then outputting the signals on different radio frequency channels;

and the fourth tunable filter is used for separating the double-frequency signal LB1MIMO DRX + LB2MIMO DRX of the ANT4 into LB1MIMO DRX and LB2MIMO DRX according to different frequencies and then outputting the signals on different radio frequency channels.

It can be understood that the second tunable power divider in the rf tuning module 302 may be configured to separate TX and PRX of the LB + LB signal, that is, when ANT1 is used for receiving a signal, the second tunable power divider may output the received dual-frequency signal to the first tunable filter on the rf channel of the received signal; when the ANT2 is used for transmitting a signal, the second tunable power divider may combine two frequency signals LB1TX and LB2 TX to be output into a dual-frequency signal LB1TX + LB2 TX and output the dual-frequency signal LB1TX + LB2 TX to the first rf integrated module. As shown in fig. 6, the antenna system may further include a radio frequency signal transmitting/receiving module, and a MIMO radio frequency signal receiving module, and the LB + LB main diversity antenna control module may control the radio frequency signal transmitting/receiving module to implement: the method comprises the steps of transmitting a TX signal of LB + LB transmitted by a radio frequency tuning module connected with a main diversity antenna, and receiving a PRX signal and a DRX signal of LB + LB; the LB + LB MIMO antenna control module controls the MIMO radio frequency signal receiving module to realize that: and receiving LB + LB MIMO PRX and DRX signals transmitted by a radio frequency tuning module connected with the MIMO antenna.

508. The antenna system determines whether a new dual frequency compatible MIMO combination needs to be implemented, if so, returns to step 501 to continue execution, and if not, ends.

Therefore, compared with the existing 2 x 2MIMO of LB + LB, the method realizes the 4 x 4MIMO specification of LB + LB, and the downlink speed of the 5G terminal equipment is doubled and improved. Moreover, this application compares current realizable scheme, because this application has increased tunable antenna tuning module and radio frequency tuning module, the antenna system that this application provided simultaneously supports 4 x 4MIMO combinations of multiple LB + LB, has reduced antenna and multiplexer, multifrequency filter quantity under the 4 x 4MIMO combination of multiple complicated LB + LB, has solved under LB + LB and 4 x 4MIMO combination of 5G terminal equipment, the restriction problem of device customization degree of difficulty, antenna cost and area. By simultaneously changing the capacitance values of the tunable phase shifter, the tunable power divider and the tunable filter of the LB + LB combined antenna, the frequency of the antenna end and the radio frequency end, LB + LB MIMO signal combination and impedance matching can be cooperatively controlled, and accurate frequency and matching control from the antenna end to the radio frequency end is realized.

It will be appreciated that, in order to implement the above-described functions, the antenna system includes corresponding hardware and/or software modules for performing the respective functions. The present application can be realized in hardware or a combination of hardware and computer software in connection with the exemplary algorithm steps described in connection with the embodiments disclosed herein. Whether a function is performed in hardware or computer software drives hardware depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, in conjunction with the embodiments, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

In this embodiment, the antenna system may be divided into functional modules according to the above method example, for example, each functional module may be divided corresponding to each function, or two or more functions may be integrated into one processing module. The integrated module may be implemented in the form of hardware. It should be noted that the division of the modules in this embodiment is schematic, and is only a logic function division, and there may be another division manner in actual implementation.

In the case of dividing the functional modules according to the respective functions, fig. 9 shows a schematic diagram of a possible composition of the antenna system in the above embodiment, the antenna system may be in an rf device 90, and the rf device may be, for example, an rf chip, as shown in fig. 9, the rf device 90 may include: a tuning unit 901, a control unit 902, an antenna integration unit 903, and a radio frequency integration unit 904. The tuning unit 901 may include the antenna tuning unit 301 and the radio frequency tuning unit 302 described above; the control unit 902 may include the signal control module 303 described above; the antenna integration unit 903 may include the first antenna integration module and the second antenna integration module, and the radio frequency integration unit 904 may include the first radio frequency integration module and the second radio frequency integration module.

Control unit 902 may be configured to support rf device 90 to perform

steps

501, 508, etc. described above, and/or other processes for the techniques described herein, such as sending control instructions to tuning unit 901, antenna integrated unit 903, and rf integrated unit 904.

Tuning unit 901 may be used to enable radio frequency device 90 to perform

steps

502, 503, 504, 507, etc., described above, and/or other processes for the techniques described herein.

Antenna integration unit 903 may be used to support rf device 90 to perform steps 505, etc., described above, and/or other processes for the techniques described herein.

Radio frequency integration unit 904 may be used to enable radio frequency device 90 to perform steps 506, etc., described above, and/or other processes for the techniques described herein.

It should be noted that all relevant contents of each step related to the above method embodiment may be referred to the functional description of the corresponding functional module, and are not described herein again.

The radio frequency device 90 provided by the embodiment is used for executing the frequency control method, so that the same effect as the implementation method can be achieved.

As shown in fig. 10, the radio frequency apparatus 90 in which the tuning unit 901, the antenna integrated unit 903 and the radio frequency integrated unit 904 are located may be included in a transceiver for processing a received signal and transmitting a signal to other devices. The present application also provides a communication device 100, the communication device 100 comprising a transceiver, a processor and a memory. Among other things, a processor or controller that may implement or execute the various illustrative logical blocks, modules, and circuits described in connection with the disclosure herein, such as a controller including the control unit 902. A processor may also be a combination of computing functions, e.g., a combination comprising one or more microprocessors, digital Signal Processing (DSP) and microprocessors, or the like. The memory may be used to store a software program executed by the control unit 902, which is used to implement the control flow described above.

Fig. 11 shows a schematic configuration diagram of a terminal device, and fig. 11 shows only main components of the terminal device for convenience of explanation. As shown in fig. 11, the terminal device 110 includes a processor 1102, a memory 1103, a control circuit, an antenna, and an input-output means. The processor 1102 is mainly configured to process the communication protocol and the communication data, control the entire terminal device, execute a software program, and process data of the software program, for example, to support the terminal device 110 to perform the actions described in the above method embodiments. The memory 1103 is mainly used for storing software programs and data. The control circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The control circuit and antenna together may also be referred to as a transceiver 1101, which is primarily used for transceiving radio frequency signals in the form of electromagnetic waves. The control circuit can comprise the radio frequency chip provided by the application body; input and output devices, such as touch screens, display screens, keyboards, etc., are used primarily for receiving data input by a user and for outputting data to the user.

When the terminal device is powered on, the processor 1102 may read the software program of the memory, interpret and execute the instructions of the software program, and process the data of the software program. When data needs to be sent wirelessly, the processor 1102 outputs a baseband signal to the radio frequency circuit after performing baseband processing on the data to be sent, and the radio frequency circuit performs radio frequency processing on the baseband signal and then sends the radio frequency signal to the outside in the form of electromagnetic waves through the antenna. When data is transmitted to the terminal device, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 1102, and the processor 1102 converts the baseband signal into data and processes the data.

Embodiments of the present application further provide a computer storage medium, where computer instructions are stored, and when the computer instructions are executed on an electronic device, the electronic device is caused to execute the above related method steps to implement the frequency control method in the above embodiment.

Embodiments of the present application further provide a computer program product, which when running on a computer, causes the computer to execute the above related steps to implement the frequency control method executed by the electronic device in the above embodiments.

In addition, an apparatus, which may be specifically a chip, a component or a module, may include a processor and a memory connected to each other; the memory is used for storing computer execution instructions, and when the device runs, the processor can execute the computer execution instructions stored in the memory, so that the chip can execute the frequency control method executed by the electronic device in the above-mentioned method embodiments.

The terminal device, the computer storage medium, the computer program product, or the chip provided in this embodiment are all configured to execute the corresponding method provided above, and therefore, the beneficial effects that can be achieved by the terminal device, the computer storage medium, the computer program product, or the chip may refer to the beneficial effects in the corresponding method provided above, and are not described herein again.

Through the description of the above embodiments, those skilled in the art will understand that, for convenience and simplicity of description, only the division of the above functional modules is used as an example, and in practical applications, the above function distribution may be completed by different functional modules as needed, that is, the internal structure of the device may be divided into different functional modules to complete all or part of the above described functions.

In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the above-described device embodiments are merely illustrative, and for example, the division of the modules or units is only one logical functional division, and there may be other divisions when actually implemented, for example, a plurality of units or components may be combined or may be integrated into another device, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may be one physical unit or a plurality of physical units, that is, may be located in one place, or may be distributed in a plurality of different places. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application may be essentially or partially contributed to by the prior art, or all or part of the technical solutions may be embodied in the form of a software product, where the software product is stored in a storage medium and includes several instructions to enable a device (which may be a single chip, a chip, or the like) or a processor (processor) to execute all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An antenna system, comprising a first antenna integrated module, a first radio frequency integrated module, a first antenna, a first tunable phase shift circuit coupled to the first antenna, a first tunable power divider, and a first tunable filter;

when the first antenna is used for receiving signals:

the first tunable phase shift circuit is configured to adjust a frequency when the first antenna receives a signal, to receive a first dual-frequency signal from the first antenna, and to send the first dual-frequency signal to the first tunable power divider;

the first tunable power divider is configured to adjust a frequency of a radio frequency channel between the first tunable power divider and the first antenna integrated module; according to the frequency of a radio frequency channel between the first tunable power divider and the first antenna integrated module, the first dual-frequency signal received from the first tunable phase shift circuit is separated into a first frequency signal and a second frequency signal, and the first frequency signal and the second frequency signal are transmitted to the first antenna integrated module;

the first antenna integrated module is configured to demodulate the first frequency signal and the second frequency signal received from the first tunable power divider, synthesize the demodulated two signals into a second dual-frequency signal, and send the second dual-frequency signal to the first radio frequency integrated module;

the first radio frequency integrated module is used for transmitting the second dual-frequency signal;

the first tunable filter is configured to receive the second dual-frequency signal, and distribute the second dual-frequency signal according to frequency to output on different radio frequency channels.

2. The antenna system of claim 1,

when the first antenna is the dominant set antenna, the antenna system further includes a second tunable power divider coupled to the dominant set antenna; when the main set antenna is used for receiving signals:

the first radio frequency integrated module is configured to send the second dual-frequency signal to the second tunable power divider;

the second tunable power divider is configured to receive the second dual-frequency signal sent by the first radio frequency integrated module, and send the second dual-frequency signal to the first tunable filter;

the first tunable filter is configured to receive the second dual-frequency signal sent by the second tunable power divider.

3. The antenna system of claim 2, wherein the first antenna is a dominant set antenna, and wherein the dominant set antenna is configured to, when transmitting a signal:

the second tunable power divider is further configured to synthesize two signals received from radio frequency channels with different frequencies into a third dual-frequency signal, and send the third dual-frequency signal to the first radio frequency integrated module;

the first radio frequency integrated module is configured to send the third dual-frequency signal to the antenna integrated module;

the first antenna integrated module is further configured to demodulate the third dual-frequency signal received from the first radio frequency integrated module, separate the third dual-frequency signal into a third frequency signal and a fourth frequency signal according to a frequency of a radio frequency channel between the first antenna integrated module and the first tunable power divider, and send the third frequency signal and the fourth frequency signal to the first tunable power divider;

the first tunable power divider is further configured to adjust a frequency of a radio frequency channel between the first tunable power divider and the first antenna integrated module; synthesizing the third frequency signal and the fourth frequency signal received from the first antenna integrated module into a fourth dual-frequency signal, and sending the fourth dual-frequency signal to the first tunable phase shift circuit;

the first tunable phase shift circuit is further configured to adjust a frequency of the main set antenna, so as to transmit the fourth dual-frequency signal received from the first tunable power divider through the main set antenna.

4. The antenna system of any of claims 1-3, wherein when the first antenna is the main set antenna, the antenna system further comprises a second antenna, a second tunable phase shift circuit coupled to the second antenna, a third tunable power divider, and a second tunable filter;

the second antenna is a diversity antenna, and when the diversity antenna is used for receiving signals:

the second tunable phase shift circuit is configured to adjust a frequency when the diversity antenna receives a signal, receive a fifth dual-frequency signal from the diversity antenna, and send the fifth dual-frequency signal to the third tunable power divider;

the third tunable power divider is configured to adjust a frequency of a radio frequency channel between the third tunable power divider and the first antenna integrated module; separating the fifth dual-frequency signal received from the second tunable phase shift circuit into a fifth frequency signal and a sixth frequency signal according to a frequency of a radio frequency channel between the third tunable power divider and the first antenna integrated module, and transmitting the fifth frequency signal and the sixth frequency signal to the first antenna integrated module;

the first antenna integrated module is configured to demodulate the fifth frequency signal and the sixth frequency signal received from the third tunable power divider, synthesize the modulated two signals into a sixth dual-frequency signal, and send the sixth dual-frequency signal to the first radio frequency integrated module;

the first radio frequency integrated module is configured to send the sixth dual-frequency signal to the second tunable filter;

and the second tunable filter is configured to receive the sixth dual-frequency signal from the first radio frequency integrated module, and allocate the sixth dual-frequency signal to different radio frequency channels according to frequency to output the sixth dual-frequency signal.

5. The antenna system of claim 4, further comprising a second antenna integration module, a second radio frequency integration module, a first multiple-input multiple-output (MIMO) antenna, and a second MIMO antenna; a third tunable phase shift circuit, a fourth tunable power divider, and a third tunable filter coupled to the first MIMO antenna; a fourth tunable phase shift circuit, a fifth tunable power divider, and a fourth tunable filter coupled to the second MIMO antenna;

when the first MIMO antenna is used for receiving signals:

the third tunable phase shift circuit is configured to adjust a frequency when the first MIMO antenna receives a signal, so as to receive a seventh dual-frequency signal from the first MIMO antenna, and send the seventh dual-frequency signal to the fourth tunable power divider;

the fourth tunable power divider is configured to adjust a frequency of a radio frequency channel between the fourth tunable power divider and the second antenna integration module; according to the frequency of a radio frequency channel between the fourth tunable phase shift circuit and the second antenna integrated module, the seventh dual-frequency signal received from the fourth tunable phase shift circuit is separated into a seventh frequency signal and an eighth frequency signal, and the seventh frequency signal and the eighth frequency signal are transmitted to the second antenna integrated module;

the second antenna integrated module is configured to demodulate the seventh frequency signal and the eighth frequency signal received from the fourth tunable power divider, synthesize the demodulated two signals into an eighth dual-frequency signal, and send the eighth dual-frequency signal to the second radio frequency integrated module;

the second rf integrated module is configured to send the eighth dual-frequency signal to the third tunable filter;

the third tunable filter is configured to receive the eighth dual-frequency signal from the second radio frequency integrated module, and distribute the eighth dual-frequency signal to different radio frequency channels according to frequency to output the eighth dual-frequency signal;

the second MIMO antenna is used for receiving signals:

the fourth tunable phase shift circuit is configured to adjust a frequency when the second MIMO antenna receives a signal, so as to receive a ninth dual-frequency signal from the second MIMO antenna, and send the ninth dual-frequency signal to the fifth tunable power divider;

the fifth tunable power divider is configured to adjust a frequency of a radio frequency channel between the fifth tunable power divider and the second antenna integration module; according to the frequency of a radio frequency channel between the first antenna integrated module and the second antenna integrated module, the ninth dual-frequency signal received from the fourth tunable phase shifting circuit is separated into a ninth frequency signal and a tenth frequency signal, and the ninth frequency signal and the tenth frequency signal are transmitted to the second antenna integrated module;

the second antenna integrated module is configured to demodulate the ninth frequency signal and the tenth frequency signal received from the fourth tunable power divider, synthesize the demodulated two signals into a tenth dual-frequency signal, and send the tenth dual-frequency signal to the second radio frequency integrated module;

the second radio frequency integrated module is configured to send the tenth dual-frequency signal to the third tunable filter;

and the fourth tunable filter is configured to receive the tenth dual-frequency signal from the second radio frequency integrated module, and distribute the tenth dual-frequency signal to different radio frequency channels according to frequency to output the tenth dual-frequency signal.

6. The antenna system of any of claims 1-5, wherein the first tunable phase shifting circuit comprises:

a first variable capacitor bank connected to an open end of a radiation patch of the first antenna;

the first variable capacitor bank is used for adjusting double frequencies when the first antenna receives signals and double frequencies when the first antenna transmits signals.

7. The antenna system of any of claims 1-6, wherein the first tunable power divider comprises:

each path of power divider in the multi-path power divider comprises a microstrip transmission line, a second variable capacitor bank connected with the microstrip transmission line and a direct current bias circuit; each microstrip transmission line corresponds to one radio frequency channel;

the second variable capacitor bank and the direct current bias circuit are used for adjusting the frequency of the microstrip transmission line;

and each first tunable impedance in the plurality of first tunable impedances is bridged between the adjacent microstrip transmission lines and is used for carrying out port isolation on the adjacent microstrip transmission lines.

8. The antenna system according to any of claims 1-7, wherein a coupler and a plurality of second tunable impedances are connected between the first tunable power divider and the antenna integration module, and are used for performing inter-antenna isolation between the first antenna and other antennas.

9. A downlink control method is characterized in that the downlink control method is applied to an antenna system, wherein the antenna system comprises a first antenna integrated module, a first radio frequency integrated module, a first antenna, a first tunable phase shift circuit coupled with the first antenna, a first tunable power divider and a first tunable filter; when the first antenna is used for receiving signals, the method comprises the following steps:

controlling the first tunable phase shift circuit to adjust a frequency at which the first antenna receives a signal to receive a first dual-frequency signal from the first antenna; controlling the first tunable phase shift circuit to transmit the first dual-frequency signal to the first tunable power divider;

controlling the first tunable power divider to adjust a frequency of a radio frequency channel between the first tunable power divider and the first antenna integrated module, controlling the first tunable power divider to separate the first dual-frequency signal into a first frequency signal and a second frequency signal according to the frequency of the radio frequency channel between the first tunable power divider and the first antenna integrated module, and transmitting the first frequency signal and the second frequency signal to the first antenna integrated module;

controlling the first antenna integration module to demodulate the first frequency signal and the second frequency signal, synthesizing the demodulated two signals into a second dual-frequency signal, and sending the second dual-frequency signal to the first radio frequency integration module;

controlling the first radio frequency integrated module to transmit the second dual-frequency signal; (ii) a

And controlling the first tunable filter to receive the second dual-frequency signal and distribute the second dual-frequency signal to be output on different radio frequency channels according to the frequency.

10. The method of claim 9,

when the first antenna is the main set antenna, the antenna system further includes a second tunable power divider coupled with the main set antenna; when the main set antenna is used for receiving signals, the controlling the first radio frequency integrated module to send the second dual-frequency signal to the first tunable filter includes:

controlling the first radio frequency integrated module to send the second dual-frequency signal to the second tunable power divider;

and controlling the second tunable power divider to transmit the second dual-frequency signal to the first tunable filter.

11. The method of claim 10, wherein the first antenna is a dominant set antenna and wherein the dominant set antenna is used to transmit signals, the method further comprising:

controlling the second tunable power divider to synthesize two signals received from radio frequency channels with different frequencies into a third dual-frequency signal, and sending the third dual-frequency signal to the first radio frequency integrated module;

controlling the first radio frequency integrated module to send the third dual-frequency signal to the first antenna integrated module;

controlling the first antenna integration module to demodulate the third dual-frequency signal, separating the third dual-frequency signal into a third frequency signal and a fourth frequency signal according to the frequency of a radio frequency channel between the third dual-frequency signal and the first tunable power divider, and sending the third frequency signal and the fourth frequency signal to the first tunable power divider;

controlling the first tunable power divider to adjust a frequency of a radio frequency channel between the first tunable power divider and the first antenna integrated module; synthesizing the received third frequency signal and the fourth frequency signal into a fourth dual-frequency signal, and sending the fourth dual-frequency signal to the first tunable phase-shifting circuit;

and controlling the first tunable phase-shifting circuit to adjust the frequency of the main set antenna, and controlling the first tunable phase-shifting circuit to send the fourth dual-frequency signal to the main set antenna, so as to control the main set antenna to transmit the fourth dual-frequency signal.

12. The method of any of claims 9-11, wherein when the first antenna is the main set antenna, the antenna system further comprises a second antenna, a second tunable phase shift circuit coupled to the second antenna, a third tunable power divider, and a second tunable filter;

the second antenna is a diversity antenna, and when the diversity antenna is used for receiving signals, the method further comprises:

controlling the second tunable phase shift circuit to adjust a frequency of the diversity antenna when receiving the signal, so as to receive a fifth dual-frequency signal from the diversity antenna, and send the fifth dual-frequency signal to the third tunable power divider;

controlling the third tunable power divider to adjust a frequency of a radio frequency channel between the third tunable power divider and the first antenna integrated module; controlling the third tunable power divider to separate the fifth dual-frequency signal received from the second tunable phase shift circuit into a fifth frequency signal and a sixth frequency signal according to a frequency of a radio frequency channel between the third tunable power divider and the first antenna integrated module, and transmitting the fifth frequency signal and the sixth frequency signal to the first antenna integrated module;

controlling the first antenna integrated module to demodulate the fifth frequency signal and the sixth frequency signal received from the third tunable power divider, synthesize the two modulated signals into a sixth dual-frequency signal, and send the sixth dual-frequency signal to the first radio frequency integrated module;

controlling the first radio frequency integrated module to send the sixth dual-frequency signal to the second tunable filter;

and controlling the second tunable filter to receive the sixth dual-frequency signal from the first radio frequency integrated module, and distributing the sixth dual-frequency signal on different radio frequency channels according to the frequency to output.

13. The method of claim 12, wherein the antenna system further comprises a second antenna integration module, a second radio frequency integration module, a first multiple-input multiple-output (MIMO) antenna, and a second MIMO antenna; a third tunable phase shift circuit, a fourth tunable power divider, and a third tunable filter coupled to the first MIMO antenna; a fourth tunable phase shift circuit, a fifth tunable power divider, and a fourth tunable filter coupled to the second MIMO antenna;

when the first MIMO antenna is used to receive signals, the method further comprises:

controlling the third tunable phase shift circuit to adjust a frequency at which the first MIMO antenna receives the signal, so as to receive a seventh dual-frequency signal from the first MIMO antenna, and send the seventh dual-frequency signal to the fourth tunable power divider;

controlling the fourth tunable power divider to adjust the frequency of a radio frequency channel between the fourth tunable power divider and the second antenna integration module; controlling the fourth tunable power divider to separate the seventh dual-frequency signal received from the fourth tunable phase shift circuit into a seventh frequency signal and an eighth frequency signal according to the frequency of the radio frequency channel between the fourth tunable power divider and the second antenna integrated module, and transmitting the seventh frequency signal and the eighth frequency signal to the second antenna integrated module;

controlling the second antenna integrated module to demodulate the seventh frequency signal and the eighth frequency signal received from the fourth tunable power divider, synthesize the demodulated two signals into an eighth dual-frequency signal, and send the eighth dual-frequency signal to the second radio frequency integrated module;

controlling the second radio frequency integrated module to send the eighth dual-frequency signal to the third tunable filter;

controlling the third tunable filter to receive the eighth dual-frequency signal from the second radio frequency integrated module, and distributing the eighth dual-frequency signal on different radio frequency channels according to frequency to output;

when the second MIMO antenna is used to receive signals, the method further comprises:

controlling the fourth tunable phase shift circuit to adjust a frequency of the second MIMO antenna when receiving the signal, so as to receive a ninth dual-frequency signal from the second MIMO antenna, and send the ninth dual-frequency signal to the fifth tunable power divider;

controlling the fifth tunable power divider to adjust the frequency of a radio frequency channel between the fifth tunable power divider and the second antenna integration module; according to the frequency of a radio frequency channel between the first antenna integrated module and the second antenna integrated module, the ninth dual-frequency signal received from the fourth tunable phase shifting circuit is separated into a ninth frequency signal and a tenth frequency signal, and the ninth frequency signal and the tenth frequency signal are transmitted to the second antenna integrated module;

controlling the second antenna integrated module to demodulate the ninth frequency signal and the tenth frequency signal received from the fourth tunable power divider, synthesize the demodulated two signals into a tenth dual-frequency signal, and send the tenth dual-frequency signal to the second rf integrated module;

controlling the second radio frequency integrated module to send the tenth dual-frequency signal to the third tunable filter;

and controlling the fourth tunable filter to receive the tenth dual-frequency signal from the second radio frequency integrated module, and distributing the tenth dual-frequency signal on different radio frequency channels according to frequency to output.

14. The method of any of claims 9-13, wherein controlling the first tunable phase shift circuit to adjust the frequency at which the first antenna receives the signal comprises:

and controlling a first variable capacitor bank in the first tunable phase-shifting circuit to adjust the frequency of the first antenna when receiving signals, wherein the first variable capacitor bank is connected with the open end of the radiation patch of the first antenna.

15. The method of any of claims 9-14, wherein the first tunable power divider comprises: each path of power divider in the multi-path power divider comprises a microstrip transmission line, a second variable capacitor bank and a direct current bias circuit, wherein the second variable capacitor bank is connected with the microstrip transmission line; each microstrip transmission line corresponds to one radio frequency channel; a plurality of first tunable impedances, each of the plurality of first tunable impedances connected across adjacent microstrip transmission lines;

the controlling the first tunable power divider to adjust the frequency of the radio frequency channel between the first tunable power divider and the antenna integration module includes:

adjusting the frequency of the microstrip transmission line through a second variable capacitor bank and a direct current bias circuit which are connected with the microstrip transmission line and included in each path of power divider; port isolation is performed on adjacent microstrip transmission lines by the plurality of first tunable impedances.

16. The method according to any of claims 9-15, wherein a coupler and a plurality of second tunable impedances are connected between the first tunable power divider and the antenna integration module for antenna-to-antenna isolation between the first antenna and other antennas.

17. A communication device, characterized in that it comprises an antenna system according to any one of claims 1-8.

18. A computer-readable storage medium comprising computer instructions that, when executed on an electronic device, cause the electronic device to perform the method of any of claims 9-16.

19. A computer program product, characterized in that it causes an electronic device to perform the method of any of the preceding claims 9-16 when the computer program product is run on a computer.