WO2022228045A1

WO2022228045A1 - Antenna system

Info

Publication number: WO2022228045A1
Application number: PCT/CN2022/085079
Authority: WO
Inventors: 李向东; 赵晓丽
Original assignee: 华为技术有限公司
Priority date: 2021-04-30
Filing date: 2022-04-02
Publication date: 2022-11-03
Also published as: CN115275611A

Abstract

The embodiments of the present application relate to the technical field of terminals. Provided is an antenna system, by means of which the problems of device customization difficulty, antenna cost and area limitation under the combination of LB+LB and 4*4 MIMO of a 5G terminal device are solved. The specific solution comprises: a first tunable phase shift circuit, which is used for adjusting the frequency of a first antenna when same receives a signal, so as to receive a first dual-frequency signal from the first antenna; a first tunable power divider, which is used for adjusting the frequency of a radio-frequency channel between the first tunable power divider and a first antenna integration module, separating the 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 two signals to the first antenna integration module; the first antenna integration module, which is used for combining the two signals into a second dual-frequency signal and sending same to a first tunable filter by means of a radio-frequency integration module; and the first tunable filter, which is used for allocating, according to frequencies, the second dual-frequency signal to different radio-frequency channels for output. The embodiments of the present application are used for downlink reception control over a terminal device.

Description

an antenna system

This application claims the priority of the Chinese patent application with the application number 202110482425.0 and the application name "An Antenna System" filed with the State Intellectual Property Office on April 30, 2021, the entire contents of which are incorporated into this application by reference.

technical field

The embodiments of the present application relate to the technical field of terminals, and in particular, to an antenna system.

Background technique

With the development of 5th generation mobile networks (5G) communication and 5G terminal equipment, the non-standalone networking of Long Term Evolution (LTE) and 5G New Radio (NR) NR dual connection The model is developing rapidly. Operators have a strong demand for 5G terminal equipment that can support dual frequency bands of low frequency (Low Band, LB) + LB (such as B20+n28A), and hope that LB can support 4*4 multiple input and multiple output (Multiple Input Multiple). Output, MIMO) combination to improve the downlink rate of 5G terminal equipment.

At present, in a prior art, a multi-function device is used to implement a signal synthesis method to evaluate and implement a 4*4 MIMO combination of LB1+LB2(B20+N28A) or LB3+LB2(B8+N28A). For example, the antenna is combined with multiple duplexers, or multiple triplexers, or multiple quadplexers and Dual saw or filter (Trisaw), etc., to realize the main 4*4 MIMO combination of LB1+LB2 or LB3+LB2, etc. Set receive and transmit (transmitter-receiver, TRX), B8+N28A&B20+N28A MIMO primary receive (primary receive, PRX), B8+N28A&B20+N28A diversity receive (diversity receive, DRX) and MIMO DRX. However, to support LB+LB and 4*4 MIMO combinations in this method, multiple duplexers/tripplexers/quadplexers and Dual saw/Trisaw and other devices are required, which is difficult to customize, and at the same time increases the antenna cost and area.

SUMMARY OF THE INVENTION

The embodiments of the present application provide an antenna system, which solves the limitations of device customization difficulty, antenna cost, and area under the combination of LB+LB and 4*4 MIMO for 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, 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 with the first antenna, and a first tunable power divider and the first tunable filter; when the first antenna is used to receive the signal:

The first tunable phase-shift circuit is used to adjust the frequency when the first antenna receives the signal, so as to receive the first dual-frequency signal from the first antenna, and send the first dual-frequency signal to the first tunable power divider; the first The tunable power divider is used to adjust the frequency of the radio frequency channel between the first tunable power divider and the first antenna integrated module; according to the frequency of the 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 The integrated module is used 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 combine the second dual frequency signal with the second dual frequency signal. The frequency signal is sent to the first radio frequency integrated module; the first radio frequency integrated module is used to send the second dual frequency signal; the first tunable filter is used to receive the second dual frequency signal, and the second dual frequency signal according to the frequency Assign outputs on different RF channels.

Therefore, in the present application, when the first tunable phase-shift circuit, the first tunable power divider and the first tunable filter are added to the antenna system, the tunable circuit can be used to realize the frequency when the first antenna receives a signal Adjustment, as well as the distribution of the adjusted frequencies on the RF path, and the distribution of signals of different frequencies on the RF path, so that not only the frequencies of the antenna end and the RF end can be kept the same, but also the precise frequency and Match control. In addition, the present application utilizes a tunable circuit to realize a dual-frequency and MIMO combination system, which can avoid the number of antennas, multiplexers, and multi-frequency filters in the prior art using a variety of complex LB+LB MIMO combinations. The number of components in the tuning circuit is small and takes up less PCB area.

In a possible design, 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 to receive signals, the first radio frequency integrated module, Used to send the second dual frequency signal to the second tunable power divider; the second tunable power divider is used 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 used for receiving the second dual-frequency signal sent by the second tunable power divider. That is to say, when the first antenna is the main set antenna, the second tunable power divider can receive the second dual-frequency signal sent by the first radio frequency integrated module, and the second dual-frequency signal is transmitted on one radio frequency channel to The second tunable power divider. The second tunable power divider can directly send the second dual-frequency signal to the first tunable filter, so that the first tunable filter can perform signal distribution on the second dual-frequency signal.

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

The second tunable power divider is also used for synthesizing two signals received from radio frequency channels of different frequencies into a third dual-frequency signal, and sending the third dual-frequency signal to the first radio frequency integration module; the first radio frequency integrated The module is used to send the third dual-frequency signal to the antenna integrated module; the first antenna integrated module is also used to demodulate the third dual-frequency signal received from the first radio frequency integrated module, and according to the Tuning the frequency of the radio frequency channel between the power dividers, separating the third dual-frequency signal into a third frequency signal and a fourth frequency signal, and sending the third frequency signal and the fourth frequency signal to the first tunable power divider; a tunable power divider, which is also used to adjust the frequency of the radio frequency channel between the first tunable power divider and the first antenna integrated module; the third frequency signal and the fourth frequency signal received from the first antenna integrated module It is synthesized into a fourth dual-frequency signal, and the fourth dual-frequency signal is sent to the first tunable phase-shift circuit; the first tunable phase-shift circuit is also used to adjust the frequency of the main set antenna, so as to transmit the signal from the first set antenna through the main set antenna. A fourth dual frequency signal received by a tunable power divider.

That is to say, when the first antenna transmits signals, the second tunable power divider at the RF end can perform signal synthesis on the signals received from the RF channels of different frequencies, so that the synthesized signals can be sent to the RF integrated module. The first antenna integrated module. The first antenna integrated module can redistribute the synthesized signal sent from the radio frequency end, and the distribution is based on the frequency of the radio frequency channel between the first tunable power divider and the antenna integrated module adjusted by the first tunable power divider, that is, The synthesized signal is then sent to the first tunable power divider according to the frequencies of different radio frequency channels, so as to realize precise frequency control and matching control from the radio frequency end to the antenna end. 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 the main set antenna, the antenna system further includes a second antenna, a second tunable phase-shift circuit coupled with the second antenna, a third tunable power divider and a second tunable power divider. Tuning filter; the second antenna is a diversity antenna, when the diversity antenna is used to receive signals:

The second tunable phase shift circuit is used to adjust the frequency when the diversity antenna receives the signal, so as to receive the fifth dual-frequency signal from the diversity antenna, and send the fifth dual-frequency signal to the third tunable power divider; the third tunable The power divider is used to adjust the frequency of the radio frequency channel between the third tunable power divider and the first antenna integrated module; according to the frequency of the radio frequency channel between the third tunable power divider and the first antenna integrated module, the The fifth dual-frequency signal received by the second tunable phase-shift circuit is separated into a fifth frequency signal and a sixth frequency signal, and the fifth frequency signal and the sixth frequency signal are transmitted to the first antenna integrated module; the first antenna integrated module is used 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; the first radio frequency integrated module is used to send the sixth dual frequency signal to the second tunable filter; the second tunable filter is used to receive the sixth dual frequency signal from the first radio frequency integrated module signal, and distribute the sixth dual-frequency signal on different radio frequency channels for output according to the frequency. Similar to the first antenna as the main set antenna, when the diversity antenna of the present application is used to receive signals, precise frequency control and frequency matching between the radio frequency end and the antenna end can also be achieved through the tunable circuit at the radio end and the tunable circuit at the antenna end. Moreover, the present application can reduce the number of antennas, multiplexers, and multi-frequency filters under a variety of complex LB+LB 4*4 MIMO combinations, just by coupling the corresponding tunable circuits to the main antenna and the diversity antenna.

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

a third tunable phase-shift circuit, configured to adjust the frequency at which the first MIMO antenna receives the signal, so as to receive the 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 used to adjust the frequency of the radio frequency channel between the fourth tunable power divider and the second antenna integrated module; according to the frequency of the radio frequency channel between the fourth tunable power divider and the second antenna integrated module, the The seventh dual-frequency signal received by the tuning phase-shift circuit is separated into the seventh frequency signal and the 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 Demodulate the seventh frequency signal and the eighth frequency signal received from the fourth tunable power divider, synthesize the demodulated two signals into the eighth dual frequency signal, and send the eighth dual frequency signal to the first two radio frequency integrated modules; the second radio frequency integrated module is used to send the eighth dual frequency signal to the third tunable filter; the third tunable filter is used to receive the eighth dual frequency signal from the second radio frequency integrated module, And according to the frequency, the eighth dual-frequency signal is distributed on different radio frequency channels for output.

When the second MIMO antenna is used to receive signals:

a fourth tunable phase-shift circuit for adjusting the frequency at which the second MIMO antenna receives the signal, so as to receive the 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 used to adjust the frequency of the radio frequency channel between the fifth tunable power divider and the second antenna integrated module; according to the frequency of the radio frequency channel between the fifth tunable power divider and the second antenna integrated module; The ninth dual-frequency signal received by the tuning 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 Demodulate the ninth frequency signal and the tenth frequency signal received from the fourth tunable power divider, synthesize the two demodulated signals into the tenth dual frequency signal, and send the tenth dual frequency signal to the first dual frequency signal. two radio frequency integrated modules; the second radio frequency integrated module is used to send the tenth dual frequency signal to the third tunable filter; the fourth tunable filter is used to receive the tenth dual frequency signal from the second radio frequency integrated module, And according to the frequency, the tenth dual-frequency signal is distributed on different radio frequency channels for output.

Combined with the above-mentioned main set antenna, diversity antenna, and the first MIMO antenna and the second MIMO antenna in this design, the present application can realize frequency control and frequency matching under LB+LB combined with MIMO. That is, similar to the main antenna and the diversity antenna, the tunable circuit at the radio frequency end coupled with the first MIMO antenna and the tunable circuit at the antenna end can realize precise frequency control and frequency matching between 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 coupled with the second MIMO antenna and the tunable circuit at the antenna end can realize precise frequency control and frequency matching between the radio frequency end and the antenna end of the second MIMO antenna. Moreover, the present application can reduce the number of antennas, multiplexers, and multi-frequency filters under a variety of complex LB+LB 4*4 MIMO combinations, and only need to provide the main set antenna, diversity antenna, first MIMO antenna and second MIMO antenna. The tunable circuit corresponding to the antenna coupling can be used to reduce the area occupied by the single board.

In a possible design, the first tunable phase-shifting circuit includes: a first variable capacitor group connected to the open end of the radiation patch of the first antenna; the first variable capacitor group is used to adjust the reception of the first antenna The dual frequency when the signal is transmitted and the frequency when the signal is transmitted. In this way, by adjusting the capacitance value of the first variable capacitor bank, a single antenna can be expanded, for example, the tuning frequency of the main set antenna is LB1+LB2+LB3... signal in the frequency band. 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 all be implemented. Refer to the principle of the first tunable phase shift circuit to realize frequency adjustment of the diversity antenna, the first MIMO antenna and the second MIMO antenna.

In a possible design, the first tunable power divider includes: multiple power dividers, each power divider in the multiple power divider includes a microstrip transmission line, and a second variable power divider connected to the microstrip transmission line A capacitor bank and a DC bias circuit; each microstrip transmission line corresponds to a radio frequency channel; a second variable capacitor bank and a DC bias circuit for adjusting the frequency of the microstrip transmission line; a plurality of first tunable impedances, a plurality of first Each of the first tunable impedances in a tunable impedance is connected across adjacent microstrip transmission lines for port isolation of adjacent microstrip transmission lines. That is to say, the tunable power divider can perform LB+LB signal frequency distribution, that is, through the first tunable power divider, multiple frequency signals of a single antenna (main set antenna) can be tuned to different microstrip transmission lines, For example, LB1 TRX is tuned to a microstrip transmission line for transmission, and LB2 TRX is tuned to another microstrip transmission line for transmission to achieve LB+LB signal frequency distribution. In addition, the present application can also implement port isolation between transmission lines through the first tunable impedance, thereby reducing interference between microstrip transmission lines. Similarly, a second tunable power splitter coupled with the main set antenna, a third tunable power splitter coupled with the diversity antenna, a fourth tunable power splitter coupled with the first MIMO antenna, and a second MIMO antenna The implementation of the coupled fifth tunable power divider may refer to the implementation of the first tunable power divider.

In a possible design, a coupler and a plurality of second tunable impedances are connected between the first tunable power splitter and the antenna integrated module, so as to isolate the main set of antennas from other antennas. The coupler and the second tunable impedance here can be understood as being used to improve PRX and DRX; MIMO antennas PRX and DRX; the isolation between the main set antenna, diversity antenna and MIMO antenna, and reduce the transmission of signals between radio frequency channels of different antennas time interference.

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-shifting circuit coupled to the first antenna, a first A tunable power divider and a first tunable filter; when the first antenna is used to receive signals, the method includes:

Controlling the first tunable phase-shifting circuit to adjust the frequency when the first antenna receives the signal, so as to receive the first dual-frequency signal from the first antenna; controlling the first tunable phase-shifting circuit to send the first dual-frequency signal to the first tunable power divider frequency signal; control the first tunable power divider to adjust the frequency of the radio frequency channel between the first tunable power divider and the first antenna integrated module, according to the radio frequency channel between the first tunable power divider and the first antenna integrated module frequency, control the first tunable power divider to separate the first dual-frequency signal into the first frequency signal and the second frequency signal, and transmit the first frequency signal and the second frequency signal to the first antenna integrated module; control the first frequency signal and the second frequency signal. An antenna integration module demodulates the first frequency signal and the second frequency signal, synthesizes the demodulated two signals into a second dual-frequency signal, and sends the second dual-frequency signal to the first radio frequency integration module; controlling The first radio frequency integrated module sends the second dual-frequency signal; controls the first tunable filter to receive the second dual-frequency signal, and distributes the second dual-frequency signal on different radio frequency channels for output according to the frequency.

For the beneficial effects of the second aspect, please refer to the description of the beneficial effects of the first aspect.

In a possible design, 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 to receive signals, the first radio frequency integrated module is controlled Sending 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; The frequency signal is output to the first tunable filter.

In a possible design, when the first antenna is the main set antenna, and the main set antenna is used for transmitting signals, the method further includes: controlling the second tunable power divider to receive two signals from radio frequency channels of different frequencies. The signals are synthesized into a third dual-frequency signal, and the third dual-frequency signal is sent to the first radio frequency integrated module; the first radio frequency integrated module is controlled to send the third dual-frequency signal to the first antenna integrated module; the first antenna integrated module is controlled demodulate the third dual frequency signal, and separate the third dual frequency signal into a third frequency signal and a fourth frequency signal according to the frequency of the radio frequency channel between the first tunable power divider and the third frequency signal, and the fourth frequency signal are sent to the first tunable power divider; control the first tunable power divider to adjust the frequency of the radio frequency channel between the first tunable power divider and the first antenna integrated module; The frequency signal and the fourth frequency signal are synthesized into a fourth dual-frequency signal, and the fourth dual-frequency signal is sent to the first tunable phase-shift circuit; the first tunable phase-shift circuit is controlled to adjust the frequency of the main set antenna, and the first tunable phase-shift circuit is controlled. The tunable phase shift circuit sends 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 the main set antenna, the antenna system further includes a second antenna, a second tunable phase-shift circuit coupled with the second antenna, a third tunable power divider and a second tunable power divider. Tuning the filter; the second antenna is a diversity antenna, and when the diversity antenna is used to receive signals, the method further includes: controlling the second tunable phase-shift circuit to adjust the frequency when the diversity antenna receives signals, so as to receive a fifth dual frequency from the diversity antenna signal, and send a fifth dual-frequency signal to the third tunable power divider; control the third tunable power divider to adjust the frequency of the radio frequency channel between the third tunable power divider and the first antenna integrated module; control the third tunable power divider According to the frequency of the radio frequency channel between the third tunable power divider and the first antenna integrated module, the tunable power divider separates the fifth dual-frequency signal received from the second tunable phase-shift circuit into a fifth frequency signal and The sixth frequency signal, transmits the fifth frequency signal and the sixth frequency signal to the first antenna integrated module; controls the first antenna integrated module to the fifth frequency signal and the sixth frequency signal received from the third tunable power divider Perform demodulation, 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; control the first radio frequency integrated module to send the sixth dual-frequency signal to the second radio frequency integrated module. Tuning the filter; controlling the second tunable filter to receive the sixth dual-frequency signal from the first radio frequency integrated module, and distribute the sixth dual-frequency signal on different radio frequency channels for output according to the frequency.

In a possible design, the antenna system further includes a second antenna integrated module, a second radio frequency integrated module, a first MIMO antenna and a second MIMO antenna; a third tunable phase-shifting circuit coupled with the first MIMO antenna, a first MIMO antenna Four tunable power dividers and a third tunable filter; a fourth tunable phase-shift circuit, a fifth tunable power divider and a fourth tunable filter coupled with the second MIMO antenna;

When the first MIMO antenna is used to receive signals, the method further includes: controlling the third tunable phase shift circuit to adjust the frequency at which the first MIMO antenna receives signals, so as to receive the seventh dual-frequency signal from the first MIMO antenna, and send the signal to the first MIMO antenna. Four tunable power dividers send the seventh dual-frequency signal; control the fourth tunable power divider to adjust the frequency of the radio frequency channel between the fourth tunable power divider and the second antenna integrated module; control the fourth tunable power divider According to the frequency of the radio frequency channel with 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 seventh frequency signal are separated The eight-frequency signal is transmitted to the second antenna integrated module; the second antenna integrated module is controlled to demodulate the seventh frequency signal and the eighth frequency signal received from the fourth tunable power divider, and the demodulated two signals are Synthesize the eighth dual-frequency signal, and send the eighth dual-frequency signal to the second radio frequency integrated module; control the second radio frequency integrated module to send the eighth dual-frequency signal to the third tunable filter; control the third tunable filter The eighth dual-frequency signal is received from the second radio frequency integrated module, and the eighth dual-frequency signal is distributed on different radio frequency channels for output according to the frequency.

When the second MIMO antenna is used for receiving signals, the method further includes: controlling the fourth tunable phase shift circuit to adjust the frequency of the second MIMO antenna when receiving the signal, so as to receive the ninth dual-frequency signal from the second MIMO antenna, and send the signal to the second MIMO antenna. Five tunable power dividers send the ninth dual-frequency signal; control the fifth tunable power divider to adjust the frequency of the radio frequency channel between the fifth tunable power divider and the second antenna integrated module; The frequency of the radio frequency channel, the ninth dual-frequency signal received from the fourth tunable phase-shift circuit is separated into the ninth frequency signal and the tenth frequency signal, and the ninth frequency signal and the tenth frequency signal are transmitted to the second antenna. Integrated module; control the second antenna integrated module to demodulate the ninth frequency signal and the tenth frequency signal received from the fourth tunable power divider, and synthesize the two demodulated signals into the tenth dual-frequency signal, Send the tenth dual-frequency signal to the second radio frequency integrated module; control the second radio frequency integrated module to send the tenth dual-frequency signal to the third tunable filter; control the fourth tunable filter to receive the second radio frequency integrated module from the second radio frequency integrated module; Ten pairs of frequency signals are distributed and output on different radio frequency channels according to the frequency.

In a possible design, controlling the first tunable phase-shift circuit to adjust the frequency when the first antenna receives the signal includes: controlling the first variable capacitor bank in the first tunable phase-shift circuit to adjust the frequency when the first antenna receives the signal frequency, the first variable capacitor bank is connected to the open end of the radiating patch of the first antenna.

In a possible design, the first tunable power divider includes: multiple power dividers, each power divider in the multiple power divider includes a microstrip transmission line, and a second variable power divider connected to the microstrip transmission line A capacitor bank and a DC bias circuit; each microstrip transmission line corresponds to a radio frequency channel; a plurality of first tunable impedances, each of the plurality of first tunable impedances is connected across an adjacent microstrip Between 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 integrated module includes: passing through the second variable capacitor included in each power divider and connected to the microstrip transmission line The group and the DC bias circuit adjust the frequency of the microstrip transmission line; and the adjacent microstrip transmission lines are port isolated through a plurality of first tunable impedances.

In a possible design, a coupler and a plurality of second tunable impedances are connected between the first tunable power splitter and the antenna integrated module, so as to isolate the first antenna from other antennas.

In a third aspect, a communication device is provided, including the first aspect and the antenna system described in any possible design of the first aspect.

In a fourth aspect, a chip is provided, which is coupled to a memory for reading and executing program instructions stored in the memory, so as to implement the second aspect or any possible design of the second aspect. Methods.

In a fifth aspect, a computer-readable storage medium is provided, comprising computer instructions, which, when the computer instructions are executed on an electronic device, cause the electronic device to perform the above-mentioned second aspect or any possible design of the second aspect. Methods.

A sixth aspect provides a computer program product that, when the computer program product runs on a computer, enables an electronic device to perform the above-mentioned method as described in the second aspect or any possible design of the second aspect.

Description of drawings

1 is a schematic circuit diagram of an antenna array implementing signal synthesis according to an embodiment of the present application;

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

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 provided by an embodiment of the present application;

FIG. 4D is a schematic diagram of an antenna system provided by an embodiment of the present application;

5 is a schematic flowchart of a frequency control method provided by an embodiment of the present application;

6 is a schematic diagram of a control flow of a software program of a signal control module provided by an embodiment of the present application to a module of an antenna system provided by the present application;

7 is a schematic diagram of a circuit structure of a first tunable power divider provided by an embodiment of the present application;

8 is a schematic diagram of a circuit structure of a coupler connecting a first tunable power divider to an antenna integrated module and a plurality of second tunable impedances according to an embodiment of the present application;

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 application.

Detailed ways

For ease of understanding, the examples provide some descriptions of concepts related to the embodiments of the present application for reference. As follows:

LB+LB: The dual frequency of the low frequency mode supported by the terminal device under the dual connection of LTE and NR. For example, the LB+LB supported by a 5G mobile phone can be a variety of LBs of 8/20/28A such as B20+N28A, B8+N28A… +LB combination.

MIMO antenna: In order to greatly improve the channel capacity, multiple antennas are used at both the transmitting end and the receiving end to form an antenna system with multiple channels between transmitting and receiving.

Main set antenna: responsible for signal transmission and reception.

Diversity antenna: responsible for receiving signals, not responsible for transmitting signals.

TRX: The signal received and transmitted by the main antenna, which can include the transmitted TX signal and the main received PRX signal;

DRX: The signal received by the diversity antenna.

PRX: The signal received by the main antenna.

Currently, there are no products and solutions that support both LB+LB and m*m MIMO, such as 4*4 MIMO. At present, in one technique, a multi-function device is used to realize the signal synthesis method to evaluate the solution of 4*4 MIMO of LB1+LB2 (B20+N28A) and LB3+LB2 (B8+N28A), as shown in Figure 1, in which, N28A is the number segment in the 5G frequency band, and both B8 and B20 are the number segment in the 4G frequency band. Figure 1 shows a schematic diagram of an existing signal synthesis scheme with multifunctional devices, which includes an antenna (Antenna, ANT), an antenna integrated module (ANT intergrated module), a radio frequency integrated module (Radio Frequency intergrared module) and Multiplexer (multiplexer), frequency division filter (TriSAW), etc. Referring to Figure 1, it can be understood that ANT1 and ANT2 combine multiplexers to implement TRX of LB1+LB2 and LB3+LB2, ANT3 combines one TriSAW to implement MIMO PRX of LB3+LB2&LB1+LB2, and ANT4, ANT5 and ANT6 combine two Trisaws to implement LB3+ respectively DRX and MIMO DRX of LB2&LB1+LB2.

It can be understood that in this technology, to support the combination of LB+LB and 4*4 MIMO, multiplexers composed of multiple duplexers/triplers/quadplexers and TriSAW are required, which increases the difficulty of device customization and increases the Antenna cost and area; LB+LB combination and the MIMO number of LB determine the number of antennas. The more combinations, the greater the number of antennas, and the greater the antenna cost and area.

In another technology, an antenna array is used to realize a signal synthesis scheme, as shown in Figure 2, including an antenna integrated module, a radio frequency integrated module, a duplexer, a diversity module, and a switch module. The TRX of LB1 (B20), LB3 (B8) and LB2 (N28A) is realized through the antennas ANT1, ANT2 and ANT3, and the DRX of LB1 (B20), LB3 (B8) and LB2 (N28A) is realized by ANT4. ANT5, ANT6 and ANT7 implement MIMO PRX and DRX of LB1 (B20), LB3 (B8) and LB2 (N28A), respectively. However, in this technology, similarly, the combination of LB and LB and the MIMO of LB are directly related to the number of antennas. As the combination increases, the number of antennas increases exponentially, resulting in a decrease in antenna efficiency and great difficulty in implementation.

Therefore, this application aims at the problem that the rapid development of 5G communication leads to the contradiction between the LB+LB and 4*4 MIMO combination requirements of various operators for 5G terminal equipment and the difficulty of device customization in the prior art, and the limitations of antenna cost and area, and Since the frequency bands of LB+LB are very close, how to realize the isolation between LB and LB signals, an antenna system is proposed, which adopts a tunable phase-shift circuit and a tunable circuit (such as a tunable power divider and a tunable filter), etc., by changing the load voltage signal of the adjustable frequency phase-shift circuit and the tunable circuit, the capacitance value of the LB+LB combination antenna tunable phase-shift circuit, tunable power divider and tunable filter can be changed at the same time. , so as to coordinately control the frequency of the antenna end and the RF end, LB+LB MIMO signal combination and impedance matching, and achieve precise frequency and matching control from the antenna end to the RF end.

The embodiments of the present application are used in a combined allocation scenario of LB+LB signals in an antenna system.

This scenario can be applied to terminal devices that support dual-frequency LB+LB. For example, under the dual connection of LTE and NR, the terminal device can support dual-frequency LB+LB, that is, the 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 mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or user device. 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 transceiver function, a virtual reality (virtual reality, VR) terminal device, an augmented reality (augmented reality, AR) terminal equipment, wireless terminals in industrial control, wireless terminals in self driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation security ( wireless terminals in transportation safety), wireless terminals in smart cities, wireless terminals in smart homes, terminal equipment in 5G networks, or future evolution of public land mobile networks , PLMN) in the terminal equipment and so on. The embodiments of the present application do not limit application scenarios. The methods and steps implemented by the terminal device in this application may also be implemented by components (eg, chips or circuits) that can be used in the terminal device. In this application, the aforementioned terminal equipment and components (eg, chips or circuits) that can be provided in the aforementioned terminal equipment are collectively referred to as terminal equipment.

In the antenna system of the terminal equipment, the present application improves the hardware circuit between the antenna and the antenna integrated module and the hardware circuit connected with the radio frequency integrated module. As shown in FIG. 3 , the circuit between the antenna and the antenna integrated module is improved. An antenna tuning module 301 is added, 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 by a signal control module 303 implemented in software, so as to realize the antenna end-to-end Precise frequency and matching control on the RF side.

The antenna tuning module 301 of the present application is implemented by a tunable phase shift circuit (Tunable phase shift circuit system) and a tunable power divider (Tunable power divider) of LB+LB and MIMO. Specifically, the tunable phase shift circuit of the present application It is used to control the beamforming of the antenna. The phase shifter can be realized by a phase shifting device or a self-made phase shifter. Specifically, a variable capacitor bank can be added to the open end of the antenna radiation patch to expand the tuning frequency of a single antenna at LB1. +LB2+LB3...; For the main antenna, diversity antenna and MIMO antenna, a tunable power divider is used to distribute the frequency of the LB+LB signal.

In addition, the present application adopts coupler and odd-even mode method at the signal output end of the tunable power divider to improve the isolation between PRX and DRX, MIMO antenna PRX and DRX, main antenna, diversity antenna and MIMO antenna;

In the present application, a variable capacitor bank can also be added to the short-circuit end of the antenna radiation patch to adjust impedance matching.

The present application can also add an integrated module to the antenna integrated module, for example, a switch module, which is used to realize the signal combination switching from the antenna tuning module 301 to the radio frequency tuning module 302 .

The radio frequency tuning module 302 of the present application may use a tunable power divider and a tunable filter bank to realize the signal distribution of LB1+LB2+...TRX/DRX and MIMO PRX/DRX.

The signal control module 303 of the present application can be used to control the frequency of LB+LB of the antenna tuning module 301 and the radio frequency tuning module 302 to keep the same, for example, the capacitance C of the variable capacitor bank has a nonlinear relationship with the loading voltage V, and the signal control module 303 can change the load voltage signal of the variable capacitor bank, and can simultaneously change the variable capacitor bank capacitance value of the LB+LB combination antenna tuning module 301 and the radio frequency tuning module 302, thereby cooperatively controlling the frequency of the antenna tuning module 301 and the RF tuning module 302 , Impedance matching, to achieve precise frequency and matching control from the antenna end to the RF end.

Taking the combination of LB+LB and 4*4MIMO as an example, for the first antenna (which can be a main antenna, a diversity antenna or a MIMO antenna) among the four antennas, in the antenna system 40 shown in FIG. The first antenna coupling circuit includes a first tunable phase shift circuit, a first tunable power divider and a first tunable filter, and when the first antenna is used to receive signals:

The first tunable phase shift circuit is used to adjust the frequency when the first antenna receives the signal, so as to receive the first dual-frequency signal from the first antenna and send the first dual-frequency signal to the first tunable power divider; The first tunable phase-shift circuit connected to an antenna is used to adjust the frequency of the first antenna at LB1+LB2, the first antenna can receive the first dual-frequency signal whose frequency is LB1+LB2, and the first tunable phase-shift circuit can be obtained from The first antenna receives the first dual-frequency signal whose frequency is LB1+LB2, and sends the first dual-frequency signal whose frequency is LB1+LB2 to the first tunable power divider. For example, when the first antenna is the main set antenna, the first dual-frequency signal may be exemplified as LB1+LB2 PRX.

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

The first tunable power divider is used to separate the first dual-frequency signal received from the first tunable phase-shift circuit into a frequency of the radio frequency channel between the first tunable power divider and the first antenna integrated module. The first frequency signal and the second frequency signal transmit the first frequency signal and the second frequency signal to the first integrated antenna module; for example, according to the above example, the first tunable power divider can The frequencies LB1 and LB2 of different radio frequency channels are separated from the LB1 PRX+LB2 PRX received from the first antenna into the first frequency signal LB1 PRX and the second frequency signal PB2 PRX;

The first antenna integration module is used for demodulating the first frequency signal and the second frequency signal received from the first tunable power divider, synthesizing the demodulated two signals into a second dual frequency signal, The second dual-frequency signal is sent 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, and the first tunable power divider among the plurality of tunable power dividers may be The received first frequency signal LB1 PRX and second frequency signal PB2 PRX are output 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, it can be Do not output the signals of other tunable power dividers, so as to send the second dual-frequency signal LB1 PRX+LB2 PRX to the first radio frequency integrated module through a radio frequency channel;

The first radio frequency integrated module is used to send the second dual frequency signal; for example, the first radio frequency integrated module sends the second dual frequency signal LB1 PRX+LB2 PRX to the first tunable filter through the middle coupling circuit;

The first tunable filter is used to receive the second dual-frequency signal, and distribute the second dual-frequency signal on different radio frequency channels for output according to the frequency. For example, the first tunable filter is used to output the received second dual-frequency signal LB1 PRX+LB2 PRX through different RF channels according to the different frequencies of LB1 and LB2, one RF channel outputs LB1 PRX, and the other RF channel outputs LB2 PRX. For example, the LB1 PRX and LB2 PRX output by the first tunable filter can be output to a processor connected to the antenna system for further processing.

Referring to FIG. 4A , the circuit structure of the first antenna in the antenna system may include:

One end a of the first antenna is coupled with the first end b of the first tunable phase-shift circuit, the second end c of the first tunable phase-shift circuit is coupled with the first end d of the first tunable power divider, the first The second end e of the 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 end i of the first radio frequency integrated module is coupled with the first end j of the first tunable filter.

In this way, for the first antenna in the antenna system, when the signal is received on the first day, the frequency of the antenna end can be tuned by the first tunable phase-shift circuit, and the frequency of different frequencies can be adjusted by the first tunable power divider. The distribution of signals on the radio frequency channel, and the distribution of signals of different frequencies at the radio frequency end through the first tunable filter, to achieve precise frequency control from the antenna end to the radio frequency end, and matching control between the frequency and the radio frequency channel.

For the antenna system of LB+LB combined with 4*4 MIMO, it can include 4 antennas according to the realization principle of the first antenna, that is, the main antenna of the radio frequency, the diversity antenna of the radio frequency, the main antenna of the MIMO and the diversity of the MIMO antenna, so as to realize In the antenna system of LB+LB combined with 4*4 MIMO, the frequency matching control from the antenna end to the RF end.

It can be understood that when the first antenna is used as the main antenna of the radio frequency, the first antenna can also be used for transmitting signals. When the first antenna is used to transmit signals, as shown in FIG. 4B , the circuit coupled with the main set of antennas may further include a second tunable power divider. The second tunable power divider is coupled between the first radio frequency integrated module and the first tunable filter. 4A and 4B, it can be seen that the first end r of the second tunable power divider is coupled to the second end of the first radio frequency integrated module, and the second end q of the second tunable power divider is coupled to the first tunable filter The first end j of the device is coupled. When the first antenna is used to receive signals, the first radio frequency integrated module is used to send the second dual-frequency signal LB1 PRX+LB2 PRX to the second tunable power divider; the second tunable power divider is used to receive The second dual-frequency signal LB1 PRX+LB2 PRX sent by the first radio frequency integrated module sends the second dual-frequency signal LB1 PRX+LB2 PRX to the first tunable filter; the first tunable filter is used to receive the second The second dual frequency signal LB1 PRX+LB2 PRX sent by the tunable power divider.

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

The second tunable power divider is further configured to synthesize two signals received from radio frequency channels of 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 second The two signals received by the tunable power divider from the two RF channels are LB1 TX and LB2 TX, and the second tunable power divider can combine LB1 TX and LB2 TX on one RF channel and transmit it to the first RF integrated module, the synthesized third dual-frequency signal can be exemplified as LB1 TX+LB2 TX (LB1+LB2 TX).

The first radio frequency integrated module is used to send the third dual-frequency signal to the antenna integrated module; for example, the first radio frequency integrated module sends the above-mentioned third dual-frequency signal LB1 TX+LB2 TX to the first antenna integrated module.

The first antenna integrated module is also used to demodulate the third dual-frequency signal received from the first radio frequency integrated module, and convert the third dual-frequency signal according to the frequency of the radio frequency channel with the first tunable power divider. The signal is separated into a third frequency signal and a fourth frequency signal, and the third frequency signal and the fourth frequency signal are sent to the first tunable power divider; for example, the first antenna integrated module is to the third dual frequency signal LB1 TX+LB2 After the TX is demodulated, 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, then the first antenna integrated module can LB1 TX+LB2 TX is separated into a third frequency signal LB1 TX and a fourth frequency signal LB2 TX, and transmits LB1 TX on the radio frequency channel with frequency LB1, and transmits LB2 TX on the radio frequency channel with frequency LB2.

The first tunable power divider is also used to adjust the frequency of the radio frequency channel between the first tunable power divider and the first antenna integrated module; the third frequency signal and the fourth frequency received from the first antenna integrated module The signal is synthesized into a fourth dual-frequency signal, and the fourth dual-frequency signal is sent to the first tunable phase shift circuit; for example, when the first tunable power divider receives the third frequency signal LB1 TX and the fourth frequency signal LB2 TX , in order to enable the first antenna to transmit the dual frequency signal, the first tunable power divider can synthesize the third frequency signal LB1 TX and the fourth frequency signal LB2 TX into a fourth dual frequency signal LB1 TX+LB2 TX and send it to A first tunable phase shift circuit.

The first tunable phase shift circuit is also used to adjust the 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. That is, when the first tunable phase-shifting circuit adjusts the frequency of the main set antenna of the radio frequency to the dual frequency LB1+LB2, the main set antenna of the radio frequency can The frequency signal LB1 TX+LB2 TX is transmitted.

In this way, when the main set antenna of the radio frequency transmits a dual frequency signal, 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 can also be used. Realize the frequency matching control from the antenna end to the RF end.

It can be understood that the main set of radio frequency antennas can transmit and receive signals, so on the radio frequency channel coupled with the first antenna, there can be both transmit signal TX transmission and receive signal PRX transmission. TX and PRX can be transmitted by frequency division, that is, the transmission signal and the received signal can be transmitted simultaneously in the frequency division duplex (Frequency Division Duplex, TDD) mode. As shown in FIG. 4C , that is, the combined signal LB1 TRX+LB2 TRX can be transmitted on the radio frequency channel coupled by the first antenna, and the separated LB1 TRX or LB2 TRX can also be transmitted. Among them, LB1 TRX includes LB1 TX and LB1 PRX, and LB2 TRX includes LB2 TX and LB2 PRX.

It can be understood that when a composite signal is transmitted on one radio frequency channel, such as the above-mentioned first dual-frequency signal, second dual-frequency signal, third dual-frequency signal, and fourth dual-frequency signal, it can also be transmitted in TDD mode, such as the first dual-frequency signal. The frequency signal LB1 PRX+LB2 PRX adopts TDD mode to transmit LB1 PRX and LB2 PRX at the same time. Of course, the TDD mode is also applicable to other dual frequency signals of this application.

Of course, to realize the combination of LB+LB and 4*4 MIMO to receive signals, on the basis of FIG. 4C, when the above-mentioned first antenna is the main antenna of the radio frequency, the antenna system may also include the second antenna of the radio frequency (for example, the diversity antenna) antenna), a first MIMO antenna and a second MIMO antenna. As shown in FIG. 4D , the antenna system includes a radio frequency main antenna ANT1, a first tunable phase-shift circuit, a first tunable power divider and a first tunable filter coupled with the ANT1, and also includes a diversity The antenna ANT2, the second antenna integrated module, the second radio frequency integrated module, the first MIMO antenna ANT3 and the second MIMO antenna ANT4; the second tunable phase shift circuit, the third tunable power divider and the second tunable phase-shifting circuit coupled with ANT2 A tunable filter; a third tunable phase-shift circuit, a fourth tunable power divider and a third tunable filter coupled with ANT3; a fourth tunable phase-shift circuit, a fifth tunable power divider coupled with the ANT4 divider and fourth tunable filter.

Referring to Figure 4D, similar to the process of ANT1 for receiving signals, when ANT2 is used for receiving signals:

The second tunable phase shift circuit is used to adjust the frequency when the diversity antenna receives the signal, so as to receive the fifth dual-frequency signal from the diversity antenna, and send the fifth dual-frequency signal to the third tunable power divider; for example, with the ANT2 The connected first tunable phase-shift circuit is used to adjust the frequency of the first ANT2 at LB1+LB2, ANT2 can receive the fifth dual-frequency signal LB1+LB2 DRX with the frequency LB1+LB2, and the second tunable phase-shift circuit can be obtained from ANT2 The fifth dual-frequency signal LB1+LB2 DRX is received, and the fifth dual-frequency signal LB1+LB2 DRX is sent to the third tunable power divider.

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

According to the frequency of the radio frequency channel between the third tunable power divider and the first antenna integrated module, the fifth dual-frequency signal received from the second tunable phase-shift circuit is separated into a fifth frequency signal and a sixth frequency signal, The fifth frequency signal and the sixth frequency signal are transmitted to the first antenna integrated module; for example, according to the above example, the third tunable power divider can be based on the frequencies LB1 and LB2 of different radio frequency channels with the first antenna integrated module, Separate the LB1 DRX+LB2 DRX received from ANT2 into the fifth frequency signal LB1 DRX and the sixth frequency signal LB2 DRX;

The first antenna integration module is used for demodulating the fifth frequency signal and the sixth frequency signal received from the third tunable power divider, synthesizing the modulated two signals into a sixth dual frequency signal, The six dual-frequency signals are sent to the first radio frequency integrated module; for example, according to the above example, the first antenna integrated module can be provided with a switch module, and can receive the fifth frequency signal LB1 from the third tunable power divider DRX and the sixth frequency signal PB2 DRX are output to the first radio frequency integrated module on one radio frequency channel, that is, the sixth dual frequency signal LB1 DRX+LB2 DRX is sent to the first radio frequency integrated module through one radio frequency channel;

The first radio frequency integrated module is used to send the sixth dual frequency signal to the second tunable filter; for example, the first radio frequency integrated module sends the sixth dual frequency signal LB1 DRX+LB2 DRX to the first tunable filter;

The second tunable filter is configured to receive the sixth dual-frequency signal from the first radio frequency integrated module, and distribute the sixth dual-frequency signal on different radio frequency channels for output according to the frequency. For example, the second tunable filter is used to output the sixth dual-frequency signal LB1 DRX+LB2 DRX received through different radio frequency channels according to the different frequencies of LB1 and LB2, one radio frequency channel outputs LB1 DRX, and the other radio frequency channel outputs LB2 DRX. For example, the LB1 DRX and LB2 DRX output by the second tunable filter can be output to a processor connected to the antenna system for further processing.

When the ANT3 antenna is used to receive signals:

a third tunable phase-shift circuit, configured to adjust the frequency at which the first MIMO antenna receives the signal, so as to receive the seventh dual-frequency signal from the first MIMO antenna, and send the seventh dual-frequency signal to the fourth tunable power divider; For example, the third tunable phase-shifting circuit connected to ANT3 is used to adjust the frequency of ANT3 at LB1+LB2, ANT3 can receive the seventh dual-frequency signal LB1+LB2 with frequency LB1+LB2 MIMO PRX, and the third tunable phase-shifting circuit The seventh dual-frequency signal LB1+LB2 MIMO PRX may be received from ANT3, and the seventh dual-frequency signal LB1+LB2 MIMO PRX may be sent to the fourth tunable power divider.

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

The fourth tunable power divider is used to separate the seventh dual-frequency signal received from the third tunable phase-shift circuit into the seventh frequency signal and the eighth frequency signal according to the frequency of the radio frequency channel between the second antenna integrated module and the second antenna integrated module frequency signal, transmits 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 can be based on the frequency LB1 of the different radio frequency channel with the second antenna integrated module and LB2, the LB1 MIMO PRX+LB2 MIMO PRX received from the third tunable phase-shift circuit is separated into the seventh frequency signal LB1 MIMO PRX and the eighth frequency signal PB2 MIMO PRX.

The second antenna integration module is used for demodulating the seventh frequency signal and the eighth frequency signal received from the fourth tunable power divider, synthesizing the two demodulated signals into an eighth dual frequency signal, The eighth dual-frequency signal is sent to the radio frequency integrated module; for example, according to the above example, a switch module can be provided in the second antenna integrated module, and the seventh frequency signal LB1 MIMO can be received from the fourth tunable power divider The PRX and the eighth frequency signal PB2 MIMO PRX are output to the second radio frequency integrated module on one radio frequency channel, that is, the eighth dual frequency signal LB1 MIMO PRX+LB2 MIMO PRX is sent to the second radio frequency integrated module through one radio frequency channel;

The second radio frequency integrated module is used to send the eighth dual-frequency signal to the third tunable filter; for example, the second radio frequency integrated module sends the eighth dual-frequency signal LB1 MIMO PRX+LB2 MIMO PRX to the third tunable filter ;

The third tunable filter is used to receive the eighth dual-frequency signal from the second radio frequency integrated module, and distribute the eighth dual-frequency signal on different radio frequency channels for output according to the frequency. For example, the third tunable filter is used to output the received eighth dual-frequency signal LB1 MIMO PRX+LB2 MIMO PRX through different radio frequency channels according to the different frequencies of LB1 and LB2, one radio frequency channel outputs LB1 MIMO PRX, the other RF channel output LB2 MIMO PRX. For example, the LB1 MIMO PRX and LB2 MIMO PRX output by the third tunable filter can be output to a processor connected to the antenna system for further processing.

When an ANT4 antenna is used to receive signals:

a fourth tunable phase-shift circuit for adjusting the frequency at which the second MIMO antenna receives the signal, so as to receive the ninth dual-frequency signal from the second MIMO antenna, and send the ninth dual-frequency signal to the fifth tunable power divider; For example, the fourth tunable phase shift circuit connected to ANT4 is used to adjust the frequency of ANT4 at LB1+LB2, ANT4 can receive the ninth dual-frequency signal LB1+LB2 with frequency LB1 MIMO DRX+LB2 MIMO DRX, the fourth tunable shifter The phase circuit can receive the ninth dual-frequency signal LB1 MIMO DRX+LB2 MIMO DRX from ANT4, and send the ninth dual-frequency signal LB1 MIMO DRX+LB2 MIMO DRX to the fifth tunable power divider.

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

The fifth tunable power divider is used to separate the ninth dual-frequency signal received from the fourth tunable phase-shift circuit into a ninth frequency signal and a tenth frequency signal according to the frequency of the radio frequency channel between the second antenna integrated module and the second antenna integrated module frequency signal, transmits 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 can be based on the frequency LB1 of the different radio frequency channel with the second antenna integrated module and LB2, the LB1 MIMO DRX+LB2 MIMO DRX received from the fourth tunable phase shift circuit is separated into the ninth frequency signal LB1 MIMO DRX and the tenth frequency signal PB2 MIMO DRX.

The second antenna integration module is used for demodulating the ninth frequency signal and the tenth frequency signal received from the fourth tunable power divider, synthesizing the two demodulated signals into the tenth dual-frequency signal, The tenth dual-frequency signal is sent to the second radio frequency integrated module; for example, according to the above example, a switch module may be set in the second antenna integrated module, and the ninth frequency signal received from the fifth tunable power divider may be The LB1 MIMO DRX and the tenth frequency signal PB2 MIMO DRX are output to the second radio frequency integrated module on one radio frequency channel, that is, the tenth dual frequency signal LB1 MIMO DRX+LB2 MIMO DRX is sent to the second radio frequency integrated module through one radio frequency channel;

The second radio frequency integrated module is used to send the tenth dual-frequency signal to the third tunable filter; for example, the second radio frequency integrated module sends the tenth dual-frequency signal LB1 MIMO DRX+LB2 MIMO DRX to the fourth tunable filter ;

The fourth tunable filter is used for outputting the tenth dual-frequency signal received from the second radio frequency integrated module on different radio frequency channels according to frequency distribution. For example, the fourth tunable filter is used to output the tenth dual-frequency signal LB1 MIMO DRX+LB2 MIMO DRX according to the different frequencies of LB1 and LB2 through different radio frequency channels, one radio frequency channel outputs LB1 MIMO DRX, the other RF channel output LB2 MIMO DRX. For example, the LB1 MIMO DRX and the LB2 MIMO DRX output by the fourth tunable filter can be output to a processor connected to the antenna system for further processing.

Among them, the connection between ANT2 and the antenna integrated module and the RF integrated module is similar to that of ANT1. Refer to Figure 4D:

One end w of 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 third tunable The second end s of the 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 integrated module;

The sixth terminal n of the first antenna integrated module is coupled with the third terminal o of the first radio frequency integrated module; the fourth terminal k of the first radio frequency integrated module is coupled with the first terminal l of the second tunable filter.

The coupling mode of ANT3 with the third tunable phase-shift 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 that of ANT2 in the antenna system; The coupling manner of ANT4 with 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 that of ANT2 in the antenna system. It will not be repeated here.

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 radio frequency integrated module and the second radio frequency integrated module may be different modules, or they may be different modules. is the same module.

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

Therefore, the present application can realize a variety of LB+LB 4*4 MIMO combinations by adding an antenna tuning module and a radio frequency tuning module through the signal control module, and reduce the antenna and the antenna under the complex LB+LB 4*4 MIMO combination. The number of multiplexers and multi-frequency filters reduces the footprint of the Printed Circuit Board (PCB).

With reference to the antenna system shown in FIG. 4D , the following describes the control flow of the LB+LB compatible MIMO antenna scheme of the present application and some implementations of the antenna tuning module 301 and the radio frequency tuning module 302. Taking the antenna system for receiving signals as an example, Referring 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 supported frequencies and MIMO specifications may be stored in the terminal device. For example, the list includes an indication that frequencies such as LB1, LB2, LB3, ..., LBn are supported, and also includes support for 2*2MIMO, 4* 4 MIMO, etc. When the terminal device receives an instruction from the network side, for example, receives the first instruction from the base station, instructing the terminal device to transmit the LB1+LB2 combined frequency compatible 4*4MIMO signal, the terminal device can check whether the first instruction is supported in the list according to the first instruction. Indicates the indicated frequency and MIMO. If it is supported, proceed to step 502; if not, the process ends.

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

In some embodiments, FIG. 6 shows the control flow of the software program of the signal control module 303 of the present application to the modules in the hardware circuit structure of FIG. 4D provided by the present application. The signal control module 303 can be divided into function analysis module, LB+LB main diversity antenna control module, and LB+LB MIMO antenna control module according to functions. Among them, the LB+LB main diversity antenna control module is mainly used to control the LB+LB signals of the main set antenna and the diversity antenna of the radio frequency, such as the TRX and DRX of LB1+LB2, including the above-mentioned first tunable phase shift circuit, first Control of the tunable power divider, the first tunable filter, the third tunable power divider, the first antenna integrated module and the first radio frequency integrated module. The LB+LB MIMO antenna control module is mainly used to control the LB+LB signal of the MIMO antenna, such as the PRX and DRX of LB2+LB3, including the above-mentioned second tunable phase shift circuit, second tunable power divider, second tunable Tuning filter and control of 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 main, diversity & MIMO. The function analysis module shown in FIG. 6 includes a plurality of signal synchronization modules for signal synchronization of main set, diversity & MIMO.

6 , the LB+LB main diversity antenna control module can determine whether the terminal device supports the LB+LB combination 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 subsequent processes, such as LB+ The LB main diversity antenna control module sends an instruction to the first tunable phase-shift circuit to perform step 502; the LB+LB MIMO antenna control module can determine whether the terminal device supports the MIMO indicated by the base station, and if so, the LB+LB MIMO antenna control module You can continue to control the antenna tuning module 301 to perform subsequent procedures, for example, the LB+LB MIMO antenna control module sends an instruction to the second tunable phase-shift circuit to perform step 502.

502. The antenna system uses the antenna tuning module 301 to adjust the frequency at which the main antenna, the diversity antenna and the MIMO antenna of the radio frequency receive signals.

When the first tunable phase-shift circuit and the second tunable phase-shift circuit receive an instruction from the LB+LB main diversity antenna control module, as shown in FIG. 6 , the first tunable phase-shift circuit connected to the main set antenna can 1) select the LB+LB antenna in the terminal device; 2) adjust the frequency of the LB+LB antenna to control the beam formation of the main set antenna according to the adjusted frequency. The implementations of the second tunable phase-shift circuit and the first tunable phase-shift circuit connected to the diversity antenna are similar.

When the third tunable phase-shift circuit and the fourth tunable phase-shift circuit receive the instructions from the LB+LB MIMO antenna control module, as shown in Figure 6, the second tunable phase-shift circuit and the fourth tunable phase-shift circuit connected to the MIMO antenna The tunable phase shift circuit can: 1) select the LB+LB MIMO antenna in the terminal device; 2) adjust the frequency of the LB+LB MIMO antenna to control the beam formation of the LB+LB MIMO antenna according to the adjusted frequency.

Exemplarily, the first tunable phase-shifting circuit includes a plurality of variable capacitor banks, the plurality of variable capacitor banks are connected to the open-circuit end of the radiation patch of the main set antenna ANT1, and the LB+LB main diversity antenna control module can control the plurality of The capacitance value of the variable capacitor bank changes to adjust the frequency of the transmit and receive signals of the main set antenna ANT1 to be LB1+LB2, that is, the transmit and receive signals of the main set antenna ANT1 are LB1 PRX/TX+LB2 PRX/TX. Similarly, the LB+LB main diversity antenna control module can also control the change of the capacitance value of the plurality of variable capacitor banks of the second tunable phase-shifting circuit connected to the radiation patch of the diversity antenna ANT2, so as to adjust the received signal of the diversity antenna ANT2. When the frequency is LB1+LB2, that is, the received signal of the diversity antenna ANT2 is LB1+LB2 DRX.

Similarly, the structures of the third tunable phase shifting circuit and the fourth tunable phase shifting circuit are similar to those of the first tunable phase shifting circuit. For example, the third tunable phase shifting circuit may include a second variable capacitor bank connected to the open end of the radiating patch of the MIMO antenna ANT3, the second variable capacitor bank being used to adjust the frequency at which the ANT3 receives the signal. It can be understood that the LB+LB MIMO antenna control module can control the change of the capacitance value of the plurality of second variable capacitor banks of the third tunable phase-shift circuit connected to the radiation patch of ANT3, so as to adjust the received signal of the MIMO antenna ANT3. The frequency is LB1+LB2, that is, the MIMO antenna ANT3 can receive LB1 MIMO PRX+LB2 MIMO PRX. Similarly, the fourth tunable phase shift circuit is used to adjust the frequency of ANT4 to be LB1+LB2, so that ANT4 can receive LB1 MIMO PRX+LB2 MIMO DRX.

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

Exemplarily, referring to FIG. 4D , after the LB+LB main-diversity antenna control module completes the adjustment of the frequencies of the main-group antenna ANT1 and the diversity antenna ANT2, the LB+LB main-diversity antenna control module can adjust the frequency between the antenna tuning module 301 and the main-group antenna. The first tunable power divider corresponding to the antenna ANT1 is controlled so that the first tunable power divider adjusts the frequency of the radio frequency channel between the first tunable power divider and the antenna integrated module to LB1 and LB2, and the first tunable power divider When the power divider receives the synthesized signal LB1 PRX+LB2 PRX sent by the first tunable phase-shift circuit, it can separate LB1 PRX+LB2 PRX into LB1 PRX and LB2 PRX, that is, LB1 PRX and LB2 PRX are respectively connected to two radio frequencies. The channel is transmitted to the first antenna integrated module. Similarly, the LB+LB main diversity antenna control module can control the third tunable power divider corresponding to the diversity antenna NAT2 in the antenna tuning module 301, so that the third tunable power divider separates LB1 DRX and LB2 DRX in the The two radio frequency channels are transmitted to the first antenna integrated module.

Exemplarily, after the LB+LB MIMO antenna control module completes the adjustment of the frequencies of the MIMO antennas ANT3 and ANT4, the LB+LB MIMO antenna control module can divide the fourth tunable power corresponding to ANT3 and ANT4 in the antenna tuning module 301. Control the LB1 MIMO PRX+LB2 MIMO PRX received by the MIMO antenna ANT3 and transmit it to the second antenna integrated module on two radio frequency channels, and the LB1 MIMO DRX received by ANT4 +LB2 MIMO DRX is split and transmitted to the second antenna integrated module on two RF channels.

That is, the first tunable power divider as shown in FIG. 6 allocates the frequencies of the main set of 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: a multi-channel power divider, each of which includes a microstrip transmission line, a second variable capacitor bank connected to the microstrip transmission line, and a DC bias circuit ; A second variable capacitor bank and DC bias circuit for adjusting the frequency of the microstrip transmission line. A microstrip transmission line can be understood as a radio frequency channel that transmits signals.

Exemplarily, FIG. 7 shows a circuit structure diagram of the first tunable power divider, wherein the multi-channel power divider may adopt the structure of Wilkinson power divider + ferroelectric thin film variable capacitor. The Wilkinson power divider can adopt an equal power or unequal power N-way power divider structure, and the N-way power divider structure includes a signal input end 71 (connected with the output end of the first tunable phase-shift circuit) and two or two. more than one microstrip transmission line. Fig. 7 shows three

microstrip transmission lines

73, 74 and 75, and the N-way power divider structure shown in Fig. 4D includes two microstrip transmission lines. Among them, the microstrip transmission line can be a single-section converter, a multi-section converter or a gradient line transmission line structure, and the microstrip transmission line can be matched with different LC matching networks to adjust the impedance of the microstrip transmission line to achieve different power ratios. frequency of the channel. For the LB+LB combination, if there is no special case, it is considered that the power ratio of each microstrip transmission line is the same. Two or more short-circuit

tunable branches

76 and 77 can be added to each microstrip transmission line of the N-way power divider, respectively, and the short-circuit tunable branches include a second variable capacitor bank and a DC bias circuit (not shown in FIG. 7 ). ), the dielectric layer of the second variable capacitor group can be a ferroelectric thin film material, such as BST or PZT, the LB+LB main diversity antenna control module can change the voltage on the second variable capacitor group to change the capacitance value to adjust the micro The frequencies of the

belt transmission lines

73, 74 and 75 are at LB1/LB3, LB2/LB4, LB5/LB6, respectively.

According to the principle of FIG. 7 , the first tunable power divider connected to the main set antenna ANT1 shown in FIG. 4D separates the LB PRX+LB2 PRX corresponding to the main set antenna ANT1 on two microstrip transmission lines and transmits them to the first antenna Integrated module, a microstrip transmission line transmits LB1 PRX to the first antenna integrated module, and a microstrip transmission line transmits LB2 PRX to the first antenna integrated module;

The third tunable power divider connected to the diversity antenna ANT2 separates the LB1 DRX+LB2 DRX corresponding to the diversity antenna ANT2 on two microstrip transmission lines and transmits it to the first antenna integrated module, and one microstrip transmission line transmits LB1 DRX to the first antenna integrated module. One antenna integrated module, one microstrip transmission line transmits LB2 DRX to the first antenna integrated module;

The fourth tunable power divider connected to the MIMO antenna ANT3 separates the LB1+LB2 MIMO PRX corresponding to the MIMO antenna ANT3 on two microstrip transmission lines and transmits it to the second antenna integrated module, and one microstrip transmission line transmits the LB1 MIMO PRX to the second antenna integrated module. The second antenna integrated module, a microstrip transmission line transmits LB2 MIMO PRX to the second antenna integrated module;

The fifth tunable power divider connected to the MIMO antenna ANT4 separates the LB1+LB2 MIMO DRX corresponding to the MIMO antenna ANT4 on two microstrip transmission lines and transmits it to the second antenna integrated module, and one microstrip transmission line transmits the LB1 MIMO DRX to the second antenna integrated module. The second antenna integrated module, a microstrip transmission line transmits LB2 MIMO DRX to the second antenna integrated module.

In addition, in some embodiments, the first tunable power divider may further include: a plurality of first tunable impedances, each of the first tunable impedances of the plurality of first tunable impedances is connected across an adjacent micrometer Between strip transmission lines, it is used for port isolation of adjacent microstrip transmission lines.

Exemplarily, referring to FIG. 7 , a first tunable impedance 78 is used across the

microstrip transmission lines

73 , 74 and 75 to achieve port isolation between the transmission lines. The first tunable impedance shown in FIG. 7 The impedance 78 adopts a tunable resistance, and can also be realized 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 divider, the third tunable power divider, the fourth tunable power divider and the fifth tunable power divider may also include a plurality of first tunable impedances. Illustration of the first tunable power divider.

504. The antenna system detects whether the frequency of the main antenna, the frequency of the diversity antenna, and the frequency of the MIMO antenna meet the requirements, and detects whether the isolation between the main antenna, the diversity antenna, and the MIMO antenna meets the requirements. If it is determined that the requirements are not met, return to step 502 to continue execution; if it is determined that the requirements are met, continue to execute step 505 .

When the LB+LB main diversity antenna control module completes the frequency adjustment of the first tunable power divider and the third tunable power divider, and the LB+LB MIMO antenna control module completes the frequency adjustment of the fourth tunable power divider and the fifth tunable power divider After the frequency adjustment of the tunable power divider is completed, in order to improve the isolation between the antennas, for example, a coupler and an odd-even mode method may be used between the signal output end of the first tunable power divider and the antenna integrated module to improve the main Isolation between diversity antennas PRX and DRX, MIMO antennas PRX and DRX, main diversity antennas and 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 splitter and the first antenna integrated module, which are used for the main antenna, the diversity Antennas and MIMO antennas perform isolation between antennas. Therefore, the LB+LB main diversity antenna control module can also implement isolation between the antennas by controlling the coupler and a plurality of second tunable impedances. Similarly, a coupler and a tunable impedance may also be connected between the third tunable power divider and the first antenna integrated module; the fourth tunable power divider and the fifth tunable power divider and the second antenna integrated module Couplers and tunable impedances can also be connected in between.

Exemplarily, the circuit structure of the coupler connecting the first tunable power divider to the first antenna integrated module and the plurality of second tunable impedances 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 can adopt a directional/reverse/steering coupler structure, which is similar to the tuning power divider. For different LB1+LB2 combinations, a tunable short-circuit branch can be added to the microstrip transmission line where the coupler 81 is located to adjust the coupling. the frequency of the coupler 81 , the through port 811 of the coupler 81 transmits the signal to the first integrated antenna module, and the 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 used to improve the isolation between the antennas. For example, in FIG. 8, a second tunable impedance 82 is used to bridge between the PRX and DRX, MIMO PRX and MIMI DRX signals, and the second tunable impedance 82 can be A tunable resistor or tunable LC network implementation, typically, may require the real part of the second tunable impedance 82 to be greater than 1k. The signal of the main antenna, the signal of the diversity antenna and the signal of the MIMO antenna can be directly isolated by the tunable large resistor 83, and the resistance of the tunable large resistor 83 can usually be greater than 5k.

Among them, the signal detection system 84 can detect whether the frequency of the microstrip transmission line where the coupler is located meets the requirements according to the signal input by the coupler 81, for example, whether it is adjusted to the frequency of LB1. frequency is adjusted. The signal detection system 84 can also detect whether the resistance values of the second tunable impedance 82 and the tunable large resistor 83 meet the requirements, that is, whether the isolation between the antennas meets the requirements. 82 and the resistance of the tunable large resistor 83 are adjusted.

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

When the LB+LB main diversity antenna control module controls the signal detection system 84 in the antenna tuning module 301 to complete the detection and meets the requirements, as shown in FIG. 6 , the LB+LB main diversity antenna control module can control the main antenna ANT1 with the radio frequency The connected antenna integration module realizes: 1) select the LB+LB combination; 2) demodulate and separate the PRX signals of LB+LB into two PRX signals and output them to the first radio frequency integrated module. For example, as shown in FIG. 4D, the first antenna integration module selects the LB1 PRX and LB2 PRX received from the first tunable power divider to perform signal synthesis after demodulation, and obtains the dual-frequency signal LB1 PRX+LB2 PRX and sends it to the first A radio frequency integrated module to realize signal reception from the antenna end to the radio frequency end. Similarly, for the diversity antenna ANT2, the antenna integration module can select LB1 DRX and LB2 DRX to perform signal synthesis to obtain a dual-frequency signal LB1 DRX+LB2 DRX, so as to realize the signal reception between ANT2 and the RF terminal.

Similarly, as shown in Figure 6, the LB+LB MIMO antenna control module can control the antenna integration module connected to the MIMO antenna to achieve: 1) select the LB+LB MIMO combination; 2) separate the DRX and PRX signals of the LB+LB MIMO The demodulation is output to the second radio frequency integrated module. For example, as shown in FIG. 4D, the second antenna integration module selects the two signals LB1 MIMO PRX and LB2 MIMO PRX received from the fourth tunable power divider to be demodulated and synthesized into a dual-frequency signal LB1 MIMO PRX+LB2 MIMO PRX, in order to realize the signal reception between the MIMO antenna ANT3 and the radio frequency end; the second antenna integration module selects the two signals LB1 MIMO DRX and LB2 MIMO DRX received from the fifth tunable power divider for demodulation and synthesis as A dual-frequency signal LB1 MIMO DRX+LB2 MIMO DRX to achieve signal reception between the MIMO antenna ANT4 and the RF end.

In some embodiments, the first antenna integrated module may include an integrated module, for example, a switch module, which is used to realize the signal combination switching from the antenna end to the radio frequency end, that is, the switch module selects the signal received from one antenna ANT1 two frequency signals, and synthesize the two frequency signals into a dual-frequency signal and output it to the first radio frequency integrated module, and then output the signals of other antennas such as ANT2. Similarly, the second antenna integrated module may also include a switch module.

506. The antenna system transmits the signal to the radio frequency tuning module 302 of the radio frequency front end through the first radio frequency integrated module and the second radio frequency integrated module.

Exemplarily, with reference to Fig. 4D, the LB+LB main diversity antenna control module controls the first radio frequency integrated module connected with the main diversity antenna to realize: the received dual-frequency signal LB1 PRX+LB2 PRX signal corresponding to the main antenna ANT1 It is transmitted to the second tunable power divider of the radio frequency tuning module 301, and the received dual-frequency signal LB1 DRX+LB2 DRX signal corresponding to the diversity antenna ANT2 is transmitted to the second tunable filter of the radio frequency tuning module 301.

The LB+LB MIMO antenna control module controls the second radio frequency integrated module connected to the MIMO antenna to realize: the received dual-frequency signal LB1 MIMO PRX+LB2 MIMO PRX signal corresponding to the MIMO antenna ANT3 is transmitted to the third radio frequency tuning module 301. A tunable filter, and transmits the received dual-frequency signal LB1 MIMO DRX+LB2 MIMO DRX signal corresponding to the MIMO antenna ANT4 to the fourth tunable filter of the radio frequency tuning module.

507. The antenna system uses the radio frequency tuning module 302 to perform signal separation on the dual-frequency signal corresponding to the main antenna, the dual-frequency signal corresponding to the diversity antenna, and the dual-frequency signal corresponding to the MIMO antenna, and then output.

It can be understood that the radio frequency tuning module 302 is configured to separate and output the PRX, DRX, MIMO PRX and MIMO DRX of the LB+LB signal according to different frequencies. Equivalent to, as shown in FIG. 6, the LB+LB main set antenna control module controls the first tunable filter connected to the main set antenna to realize: the LB+LB combination PRX is signal separated, and the LB+LB MIMO antenna control module controls The third tunable filter connected to the MIMO antenna is implemented: the LB+LB combined MIMO PRX is signal-separated and then output.

Thus, it can be understood that with reference to FIG. 4D, the first tunable filter is used to separate the dual-frequency signal LB1 PRX+LB2 PRX of ANT1 into LB1 PRX and LB2 PRX according to different frequencies and output on different radio frequency channels;

The second tunable filter is used to separate the dual-frequency signal LB1 DRX+LB2 DRX of ANT2 into LB1 DRX and LB2 DRX according to different frequencies and output them on different radio frequency channels;

The third tunable filter is used to separate the dual-frequency signal LB1 MIMO PRX+LB2 MIMO PRX of ANT3 into LB1 MIMO PRX and LB2 MIMO PRX according to different frequencies and output them on different radio frequency channels;

The fourth tunable filter is used to separate the ANT4 dual-frequency signal LB1 MIMO DRX+LB2 MIMO DRX into LB1 MIMO DRX and LB2 MIMO DRX according to different frequencies and output them on different radio frequency channels.

It can be understood that the second tunable power divider in the radio frequency tuning module 302 can be used to realize the separation of TX and PRX of the LB+LB signal, that is, when ANT1 is used to receive signals, the second tunable power divider can receive the received signal. The dual-frequency signal is output to the first tunable filter on the RF channel of the received signal; when ANT2 is used to transmit the signal, the second tunable power divider can synthesize the two frequency signals LB1 TX and LB2 TX to be output as The dual-frequency signal LB1 TX+LB2 TX is output to the first radio frequency integrated module. As shown in Figure 6, the antenna system can also include a radio frequency signal transmitting/receiving module, and a MIMO radio frequency signal receiving module. The LB+LB main diversity antenna control module can control the radio frequency signal transmitting/receiving module to realize: the radio frequency connected to the main diversity antenna The LB+LB TX signal transmitted by the tuning module is transmitted, and the PRX and DRX signals of the LB+LB are received; the LB+LB MIMO antenna control module controls the MIMO radio frequency signal receiving module to realize: the radio frequency tuning module connected to the MIMO antenna transmits LB+LB MIMO PRX, DRX signal reception.

508. The antenna system determines whether a new dual-frequency compatible MIMO combination needs to be implemented, and if yes, returns to step 501 to continue execution, and if no, ends.

As a result, compared with the existing LB+LB 2*2 MIMO, the present application achieves the LB+LB 4*4 MIMO specification, which doubles the downlink rate of 5G terminal equipment. Moreover, compared with the existing achievable solutions in the present application, since the present application adds a tunable antenna tuning module and a radio frequency tuning module, the antenna system provided by the present application can simultaneously support a variety of LB+LB 4*4 MIMO combinations, Reduced the number of antennas, multiplexers, and multi-frequency filters in a variety of complex LB+LB 4*4 MIMO combinations, and solved the difficulty of device customization and antenna cost under the LB+LB and 4*4 MIMO combinations of 5G terminal equipment. and area limitations. By simultaneously changing the capacitance value of the tunable phase shifter, tunable power divider and tunable filter of the LB+LB combination antenna, the frequency, LB+LB MIMO signal combination and impedance of the antenna end and the RF end can be controlled cooperatively. Matching to achieve precise frequency and matching control from the antenna end to the RF end.

It can be understood that, in order to realize the above-mentioned functions, the antenna system includes corresponding hardware and/or software modules for executing each function. The present application can be implemented in hardware or in the form of a combination of hardware and computer software in conjunction with the algorithm steps of each example described in conjunction with the embodiments disclosed herein. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functionality for each particular application in conjunction with the embodiments, but such implementations should not be considered beyond the scope of this application.

In this embodiment, the antenna system may be divided into functional modules according to the foregoing method examples. 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 above-mentioned integrated modules can be implemented in the form of hardware. It should be noted that, the division of modules in this embodiment is schematic, and is only a logical function division, and there may be other division manners in actual implementation.

In the case where each functional module is divided according to each function, FIG. 9 shows a possible schematic diagram of the composition of the antenna system involved in the above embodiment. The antenna system may be in the radio frequency device 90, and the radio frequency device may be, for example, a radio frequency device. Chip, as shown in FIG. 9 , the radio frequency 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 aforementioned antenna tuning unit 301 and the radio frequency tuning unit 302; the control unit 902 may include the aforementioned signal control module 303; the antenna integration unit 903 may include the aforementioned first antenna integration module and second antenna integration module, and the radio frequency integration unit 904 The above-mentioned first radio frequency integrated module and second radio frequency integrated module may be included.

Wherein, the control unit 902 may be used to support the radio frequency device 90 to perform the

above steps

501, 508, etc., and/or other processes used in the techniques described herein, such as for the tuning unit 901, the antenna integration unit 903, and the radio frequency integration unit 904. Send control commands.

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

steps

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

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

The radio frequency integration unit 904 may be used to support the 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 the steps involved in the above method embodiments can be cited in the functional description of the corresponding functional module, which will not be repeated here.

The radio frequency device 90 provided in this embodiment is used to execute the above-mentioned frequency control method, and thus can achieve the same effect as the above-mentioned implementation method.

Wherein, as shown in FIG. 10 , the radio frequency device 90 where the tuning unit 901 , the antenna integration unit 903 and the radio frequency integration unit 904 are located may be included in a transceiver for processing received signals and sending signals to other devices. The present application also provides a communication device 100 including a transceiver, a processor and a memory. Among them, a processor or controller, which can implement or execute the various exemplary logical blocks, modules and circuits described in connection with the present disclosure, such as the controller, includes the control unit 902 . The processor may also be a combination that implements computing functions, such as a combination of one or more microprocessors, a combination of digital signal processing (DSP) and a microprocessor, and the like. The memory may be used to store a software program executed by the control unit 902 for implementing the above-described control flow.

FIG. 11 shows a schematic structural diagram of a terminal device. For convenience of description, FIG. 11 only shows the main components of the terminal device. As shown in FIG. 11, the terminal device 110 includes a processor 1102, a memory 1103, a control circuit, an antenna, and an input and output device. The processor 1102 is mainly used to process communication protocols and communication data, control the entire terminal device, execute software programs, and process data of the software programs, for example, to support the terminal device 110 to perform the actions described in the above method embodiments . The memory 1103 is mainly used to store software programs and data. The control circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal. The control circuit and the antenna together can also be called the transceiver 1101, and are mainly used for transmitting and receiving radio frequency signals in the form of electromagnetic waves. The control circuit may include a radio frequency chip provided by the applicant; input and output devices, such as a touch screen, a display screen, a keyboard, etc., are mainly used for receiving data input by a user and outputting data to the user.

After the terminal device is powered on, the processor 1102 can read the software program in 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 performs baseband processing on the data to be sent, and outputs a baseband signal to a radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal and sends the radio frequency signal through an antenna in the form of electromagnetic waves. When data is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor 1102. The processor 1102 converts the baseband signal into data and processes the data. deal with.

Embodiments of the present application further provide a computer storage medium, where computer instructions are stored in the computer storage medium, and when the computer instructions are executed on an electronic device, the electronic device executes the above-mentioned related method steps to realize the frequency control in the above-mentioned embodiments. method.

Embodiments of the present application also provide a computer program product, which, when the computer program product runs on a computer, causes the computer to execute the above-mentioned relevant steps, so as to realize the frequency control method executed by the electronic device in the above-mentioned embodiment.

In addition, the embodiments of the present application also provide an apparatus, which may specifically be a chip, a component or a module, and the apparatus may include a connected processor and a memory; wherein, the memory is used for storing computer execution instructions, and when the apparatus is running, The processor can execute the computer-executed instructions stored in the memory, so that the chip executes the frequency control method executed by the electronic device in the above method embodiments.

Wherein, the terminal device, computer storage medium, computer program product or chip provided in this embodiment are all used to execute the corresponding method provided above. Therefore, the beneficial effects that can be achieved may refer to the corresponding provided above. The beneficial effects in the method will not be repeated here.

From the description of the above embodiments, those skilled in the art can understand that for the convenience and brevity of the description, only the division of the above functional modules is used as an example for illustration. In practical applications, the above functions can be allocated by different The function module is completed, that is, the internal structure of the device is divided into different function modules, so as to complete all or part of the functions described above.

In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other manners. For example, the device embodiments described above are only illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be Incorporation may either be integrated into another device, or some features may be omitted, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

The units described as separate components may or may not be physically separated, and the components shown as units may be one physical unit or multiple physical units, that is, they may be located in one place, or may be distributed to multiple different places . Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit. The above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.

If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it may be stored in a readable storage medium. Based on such understanding, the technical solutions of the embodiments of the present application can be embodied in the form of software products in essence, or the parts that contribute to the prior art, or all or part of the technical solutions, which are stored in a storage medium , including several instructions to make a device (may be a single chip microcomputer, a chip, etc.) or a processor (processor) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read only memory (ROM), random access memory (random access memory, RAM), magnetic disk or optical disk and other media that can store program codes.

The above content is only a specific embodiment of the present application, but the protection scope of the present application is not limited to this. Covered within the scope of protection of this application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

An antenna system, characterized in that 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 a power divider and a first tunable filter;

When the first antenna is used to receive signals:

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

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

The first antenna integration module is used to demodulate the first frequency signal and the second frequency signal received from the first tunable power divider, and synthesize the demodulated two signals for a second dual-frequency signal, sending the second dual-frequency signal to the first radio frequency integrated module;

the first radio frequency integrated module for sending 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 on different radio frequency channels for output according to frequency.
The antenna system of claim 1, wherein:

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

the second tunable power divider, 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.
The antenna system according to claim 2, wherein the first antenna is a master antenna, and when the master antenna is used for transmitting signals:

The second tunable power divider is also used for synthesizing two signals received from radio frequency channels of different frequencies into a third dual frequency signal, and sending the third dual frequency signal to the first radio frequency integration module;

the first radio frequency integrated module for sending 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, and perform demodulation according to the radio frequency channel between the first tunable power divider and the first tunable power divider. frequency, separate the third dual-frequency signal into a third frequency signal and a fourth frequency signal, and send the third frequency signal and the fourth frequency signal to the first tunable power divider;

The first tunable power divider is also used to adjust the frequency of the radio frequency channel between the first tunable power divider and the first antenna integrated module; The third frequency signal and the fourth frequency signal are synthesized into a fourth dual frequency signal, and the fourth dual frequency signal is sent to the first tunable phase shift circuit;

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

The second antenna is a diversity antenna, and when the diversity antenna is used to receive signals:

The second tunable phase-shift circuit is used to adjust the frequency at which the diversity antenna receives a signal, so as to receive a fifth dual-frequency signal from the diversity antenna, and send the third tunable power divider to the third tunable power divider the fifth dual frequency signal;

The third tunable power divider is used to adjust the frequency of the radio frequency channel between the third tunable power divider and the first antenna integrated module; according to the third tunable power divider and the The frequency of the radio frequency channel between the first antenna integrated modules is separated from the fifth dual-frequency signal received from the second tunable phase-shift circuit into a fifth frequency signal and a sixth frequency signal, and the fifth frequency signal is divided into a sixth frequency signal. The frequency signal and the sixth frequency signal are transmitted to the first antenna integrated module;

The first antenna integration module is used for demodulating the fifth frequency signal and the sixth frequency signal received from the third tunable power divider, and synthesizing the modulated two signals as a sixth dual-frequency signal, sending the sixth dual-frequency signal to the first radio frequency integrated module;

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

The second tunable filter is configured to receive the sixth dual-frequency signal from the first radio frequency integrated module, and distribute the sixth dual-frequency signal on different radio frequency channels for output according to frequency.
The antenna system according to claim 4, wherein the antenna system further comprises a second antenna integrated module, a second radio frequency integrated 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 with a MIMO antenna; a fourth tunable phase-shift circuit, a fifth tunable power divider coupled with the second MIMO antenna divider and a fourth tunable filter;

When the first MIMO antenna is used to receive signals:

The third tunable phase-shift circuit is used to adjust the frequency at which the first MIMO antenna receives a signal, so as to receive a seventh dual-frequency signal from the first MIMO antenna, and divide power into the fourth tunable the device sends the seventh dual-frequency signal;

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

The second antenna integration module is used for demodulating the seventh frequency signal and the eighth frequency signal received from the fourth tunable power divider, and synthesizing the demodulated two signals for an eighth dual-frequency signal, sending the eighth dual-frequency signal to the second radio frequency integrated module;

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

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

When the second MIMO antenna is used to receive signals:

The fourth tunable phase-shift circuit is used to adjust the frequency at which the second MIMO antenna receives a signal, so as to receive a ninth dual-frequency signal from the second MIMO antenna, and divide power into the fifth tunable the device sends the ninth dual-frequency signal;

The fifth tunable power divider is used to adjust the frequency of the radio frequency channel between the fifth tunable power divider and the second antenna integrated module; according to the radio frequency channel between the fifth tunable power divider and the second antenna integrated module frequency, separate the ninth dual-frequency signal received from the fourth tunable phase-shift circuit into a ninth frequency signal and a tenth frequency signal, and separate the ninth frequency signal and the tenth frequency signal transmitting to the second antenna integrated module;

The second antenna integration module is used for demodulating the ninth frequency signal and the tenth frequency signal received from the fourth tunable power divider, and synthesizing the demodulated two signals for the tenth dual-frequency signal, sending the tenth dual-frequency signal to the second radio frequency integrated module;

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

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 on different radio frequency channels for output according to frequency.
The antenna system according to any one of claims 1-5, wherein the first tunable phase shifting circuit comprises:

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

The first variable capacitor bank is used to adjust the dual frequency when the first antenna receives a signal and the dual frequency when it transmits a signal.
The antenna system according to any one of claims 1-6, wherein the first tunable power divider comprises:

A multi-channel power divider, each of which includes a microstrip transmission line, a second variable capacitor bank connected to the microstrip transmission line, and a DC bias circuit; each microstrip transmission line Corresponds to a radio frequency channel;

the second variable capacitor bank and the DC bias circuit for adjusting the frequency of the microstrip transmission line;

A plurality of first tunable impedances, each of the plurality of first tunable impedances is connected across adjacent microstrip transmission lines, and is used for port isolation of adjacent microstrip transmission lines.
The antenna system according to any one of claims 1-7, wherein a coupler and a plurality of second tunable impedances are connected between the first tunable power splitter and the antenna integrated module, and are used for It is used to isolate the first antenna from other antennas.
A downlink control method, characterized by being applied to an antenna system, the antenna system comprising a first antenna integrated module, a first radio frequency integrated module, a first antenna, and a first tunable phase shifter coupled to the first antenna A circuit, a first tunable power divider and a first tunable filter; when the first antenna is used to receive signals, the method includes:

controlling the first tunable phase-shift circuit to adjust the frequency at which the first antenna receives a signal, so as to receive a first dual-frequency signal from the first antenna; controlling the first tunable phase-shift circuit to the first A tunable power divider sends the first dual-frequency signal;

Controlling the first tunable power divider to adjust the frequency of the radio frequency channel between the first tunable power divider and the first antenna integrated module, according to the first tunable power divider and the first The frequency of the radio frequency channel between the antenna integration modules, the first tunable power divider is controlled to separate the first dual-frequency signal into a first frequency signal and a second frequency signal, and the first frequency signal and all transmitting 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 combining the second dual frequency signal sending a signal to the first radio frequency integrated module;

controlling the first radio frequency integrated module to send the second dual frequency signal;;

The first tunable filter is controlled to receive the second dual-frequency signal, and the second dual-frequency signal is distributed and output on different radio frequency channels according to frequency.
The method of claim 9, wherein:

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 control The first radio frequency integrated module sending 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;

The second tunable power divider is controlled to send the second dual frequency signal to the first tunable filter.
The method according to claim 10, wherein when the first antenna is a master antenna, and the master antenna is used for transmitting signals, the method further comprises:

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

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

Control the first antenna integration module to demodulate the third dual-frequency signal, and separate the third dual-frequency signal into the third dual-frequency signal according to the frequency of the radio frequency channel between the first tunable power divider and the first tunable power divider. Three frequency signals and a fourth frequency signal, 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 the radio frequency channel between the first tunable power divider and the first antenna integrated module; combining the received third frequency signal with the fourth The frequency signal is synthesized into a fourth dual-frequency signal, and the fourth dual-frequency signal is sent to the first tunable phase-shift circuit;

Controlling the first tunable phase shift circuit to adjust the frequency of the main set antenna, and controlling the first tunable phase shift circuit to send the fourth dual frequency signal to the main set antenna, so as to control the main set antenna The set antenna transmits the fourth dual frequency signal.
The method according to any one of claims 9-11, wherein when the first antenna is the main set antenna, the antenna system further comprises a second antenna, a second antenna coupled to the second antenna Two tunable phase shifting circuits, a third tunable power divider and a second tunable filter;

The second antenna is a diversity antenna, and when the diversity antenna is used to receive signals, the method further includes:

controlling the second tunable phase-shifting circuit to adjust the frequency at which the diversity antenna receives signals to receive a fifth dual-frequency signal from the diversity antenna, and to transmit the fifth dual-frequency signal to the third tunable power divider dual frequency signal;

controlling the third tunable power divider to adjust the frequency of the radio frequency channel between the third tunable power divider and the first antenna integrated module; controlling the third tunable power divider according to the third The frequency of the radio frequency channel between the tunable power divider and the first antenna integrated module is 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. a frequency signal, transmitting the fifth frequency signal and the sixth frequency signal to the first antenna integrated module;

Controlling the first antenna integration module to demodulate the fifth frequency signal and the sixth frequency signal received from the third tunable power divider, and synthesizing the modulated two signals into a sixth frequency signal Dual frequency signal, 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;

The second tunable filter is controlled to receive the sixth dual-frequency signal from the first radio frequency integrated module, and distribute the sixth dual-frequency signal on different radio frequency channels for output according to frequency.
The method according to claim 12, wherein the antenna system further comprises a second antenna integrated module, a second radio frequency integrated 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 with the MIMO antenna; a fourth tunable phase shift circuit, a fifth tunable power divider coupled with the second MIMO antenna and a fourth tunable filter;

When the first MIMO antenna is used to receive signals, the method further includes:

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

Control the fourth tunable power divider to adjust the frequency of the radio frequency channel between the fourth tunable power divider and the second antenna integrated module; control the fourth tunable power divider according to the The frequency of the radio frequency channel between the two antenna integrated modules is separated from the seventh dual-frequency signal received from the fourth tunable phase-shift circuit into a seventh frequency signal and an eighth frequency signal, and the seventh frequency transmitting the signal and the eighth frequency signal to the second antenna integrated module;

Controlling the second antenna integration module to demodulate the seventh frequency signal and the eighth frequency signal received from the fourth tunable power divider, and synthesizing the demodulated two signals into a first eight dual-frequency signals, sending 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 assigning the eighth dual-frequency signal to different radio frequency channels for output according to frequency;

When the second MIMO antenna is used for receiving signals, the method further includes:

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

Controlling the fifth tunable power divider to adjust the frequency of the radio frequency channel between the fifth tunable power divider and the second antenna integrated module; according to the frequency of the radio frequency channel between the fifth tunable power divider and the second antenna integrated module , separate the ninth dual-frequency signal received from the fourth tunable phase-shift circuit into a ninth frequency signal and a tenth frequency signal, and transmit the ninth frequency signal and the tenth frequency signal to the second antenna integrated module;

Controlling the second antenna integration module to demodulate the ninth frequency signal and the tenth frequency signal received from the fourth tunable power divider, and synthesizing the demodulated two signals into a ten dual-frequency signals, sending the tenth dual-frequency signal to the second radio frequency integrated module;

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

The fourth tunable filter is controlled to receive the tenth dual-frequency signal from the second radio frequency integrated module, and distribute the tenth dual-frequency signal on different radio frequency channels for output according to frequency.
The method according to any one of claims 9-13, wherein the controlling the first tunable phase-shift circuit to adjust the frequency when the first antenna receives a signal comprises:

Controlling the first variable capacitor bank in the first tunable phase-shift circuit to adjust the frequency when the first antenna receives a signal, the first variable capacitor bank and the open circuit of the radiation patch of the first antenna end connection.
The method according to any one of claims 9-14, wherein the first tunable power divider comprises: a multi-channel power divider, and each power divider in the multi-channel power divider comprises: a microstrip transmission line, a second variable capacitor bank and a DC bias circuit connected to the microstrip transmission line; each microstrip transmission line corresponds to a radio frequency channel; a plurality of first tunable impedances, the plurality of first tunable each of the first tunable impedances in the impedance is 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 integrated module includes:

The frequency of the microstrip transmission line is adjusted through the second variable capacitor bank and the DC bias circuit included in the power divider and connected to the microstrip transmission line; The adjacent microstrip transmission lines are used for port isolation.
The method according to any one 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 integrated module, for The first antenna is isolated from other antennas.
A communication device, characterized by comprising the antenna system according to any one of claims 1-8.
A computer-readable storage medium, characterized by comprising computer instructions, which, when executed on an electronic device, cause the electronic device to perform the method of any one of the preceding claims 9-16.
A computer program product, characterized in that, when the computer program product runs on a computer, the electronic device is caused to perform the method of any one of the above claims 9-16.