CN117639866A

CN117639866A - Phase shift matrix circuit, beam forming circuit, phase shift method, device and system

Info

Publication number: CN117639866A
Application number: CN202211001018.4A
Authority: CN
Inventors: 任志雄; 熊浩
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2024-03-01
Also published as: WO2024037229A1

Abstract

The embodiment of the application provides a phase shift matrix circuit, a beam forming circuit, a phase shift method, equipment and a system, which are used for the field of radio frequency signal communication transmission. The phase shift matrix circuit comprises a controller, a first coupler, a second coupler, a third coupler and a fourth coupler. For each of the first, second, third, and fourth couplers: a first through passage is arranged between the first end and the third end, a first coupling passage is arranged between the first end and the fourth end, a second through passage is arranged between the second end and the fourth end, and a second coupling passage is arranged between the second end and the third end; the controller is configured to control a phase difference between the first through path and the first coupling path of each coupler, or to control a phase difference between the second through path and the second coupling path. According to the method and the device, the phase difference between the two radio frequency signals output by the four couplers is changed, so that the radio frequency signals are subjected to beam forming under more different phase differences.

Description

Phase shift matrix circuit, beam forming circuit, phase shift method, device and system

Technical Field

The present disclosure relates to the field of radio frequency transmission technologies for wireless communications, and in particular, to a phase shift matrix circuit, a beam forming circuit, a phase shift method, a device, and a system.

Background

Beamforming refers to the implementation of energy aggregation of radio frequency signals by transmitting a plurality of radio frequency signals with different phases, so as to improve the signal-to-noise ratio and transmission distance of the transmitted radio frequency signals. One common beamforming approach is to transmit a plurality of radio frequency signals of different phases using an active phased array. In active phased arrays for millimeter waves, butler (Butler) matrices are often used to adjust the phase of the radio frequency signals to be transmitted.

One implementation of the butler matrix is to use four 90 ° reflective hybrid couplers and two 45 ° phase shifters to form the butler matrix. However, the butler matrix can only output four radio frequency signals under the phase difference of-45 degrees, -135 degrees, -45 degrees and 135 degrees, and the phase shift angle is single. If more radio frequency signals with different phase differences are needed, the number of hybrid couplers and phase shifters in the butler matrix needs to be increased, thereby increasing the complexity of the system and increasing the cost.

Disclosure of Invention

The embodiment of the application provides a phase shift matrix circuit, a wave beam forming circuit, a phase shift method, equipment and a system, which increase the selection of the phase shift phase difference of radio frequency signals without increasing the quantity of hybrid couplers and phase shifters.

In order to achieve the above purpose, the embodiments of the present application adopt the following technical solutions:

in a first aspect, a phase shift matrix circuit is provided, the phase shift matrix circuit including a controller, a first coupler, a second coupler, a third coupler, and a fourth coupler; the third end of the first coupler is coupled with the first end of the third coupler; the fourth end of the first coupler is coupled with the first end of the fourth coupler; the third end of the second coupler is coupled with the second end of the third coupler; the fourth end of the second coupler is coupled with the second end of the fourth coupler; the controller is respectively coupled with the first coupler, the second coupler, the third coupler and the fourth coupler; for each of the first, second, third, and fourth couplers: a first through passage is arranged between the first end and the third end, a first coupling passage is arranged between the first end and the fourth end, a second through passage is arranged between the second end and the fourth end, and a second coupling passage is arranged between the second end and the third end; the controller is configured to control a phase difference between the first through path and the first coupling path of each coupler and/or to control a phase difference between the second through path and the second coupling path.

In the embodiment of the application, the phase difference between the through path and the coupling path of at least one of the four couplers, namely the first coupler, the second coupler, the third coupler and the fourth coupler, is controlled by the controller, so that the four-way radio frequency signals with different phase differences can be output by the phase shift matrix circuit formed by the four couplers. The phase shift matrix circuit is simple in structure, and the mode of changing the output phase difference by adjusting the coupler parameters through the controller is convenient to operate, so that the embodiment of the application has great feasibility in the application of phase shift and beam forming of radio frequency signals.

In one possible implementation, the phase shift matrix circuit further includes a first tunable phase shifter; the third end of the first coupler is coupled with the first end of the third coupler through the first adjustable phase shifter; the first adjustable phase shifter is used for shifting the phase of the radio frequency signal transmitted between the third end of the first coupler and the first end of the third coupler; the controller is also coupled to the first adjustable phase shifter for controlling a phase shift angle of the first adjustable phase shifter.

In the embodiment of the application, the first adjustable phase shifter is arranged to shift the phase of the radio frequency signal transmitted between the third end of the first coupler and the first end of the third coupler; therefore, more phase shifting selections are carried out on two paths of radio frequency signals in the four paths of radio frequency signals output by the phase shifting matrix circuit, and the phase difference between the output radio frequency signals is increased. Meanwhile, the first adjustable phase shifter is added to assist in carrying out phase shifting at more angles, so that the condition that large-angle phase shifting is carried out through the first coupler, the second coupler, the third coupler and the fourth coupler in practical application can be reduced, and the controller only needs to carry out small-range phase shifting angle adjustment on at least one coupler of the first coupler, the second coupler, the third coupler and the fourth coupler, so that the scheme is realized according to rapidness and convenience, and the phase shifting precision of the phase shifting matrix circuit can be effectively improved.

In one possible embodiment, the phase shift angles of the first adjustable phase shifter are ±22.5°, ±45°, and ±67.5°.

In the embodiment of the application, the first adjustable phase shifter is used as a phase shifting device coupled in the phase shifting matrix circuit, and can be any adjustable phase shifter theoretically, but the overall design concept of the phase shifting matrix circuit keeps the concept of simple system, convenient adjustment, rapid and accurate phase shifting. The higher the accuracy of the adjustable phase shifter, the more complex the structure and control is often represented. Therefore, in the embodiment of the application, the phase shift angle of the first adjustable phase shifter can be set in a smaller range and adjusted in a larger step. The angle that can be phase-shifted is adjusted in the forward direction or the reverse direction with 22.5 degrees as an adjustable step, for example, in the range of 0 degrees to + -67.5 degrees. At this time, the phase shift angle with higher precision is adjusted through the first coupler, the second coupler, the third coupler and the fourth coupler, and then the first adjustable phase shifter adjusts 0 degrees to +/-67.5 degrees on the basis of the adjustment of the first coupler, the second coupler, the third coupler and the fourth coupler.

In one possible implementation, the phase shift matrix circuit further includes a second tunable phase shifter; the fourth end of the second coupler is coupled with the second end of the fourth coupler through a second adjustable phase shifter; the second adjustable phase shifter is used for shifting the phase of the radio frequency signal transmitted between the fourth end of the second coupler and the second end of the fourth coupler; the controller is also coupled to the second adjustable phase shifter for controlling the phase shift angle of the second adjustable phase shifter.

In the embodiment of the application, the second adjustable phase shifter is arranged to shift the phase of the radio frequency signal transmitted between the fourth end of the second coupler and the second end of the fourth coupler; therefore, more phase shifting selections are carried out on two paths of radio frequency signals in the four paths of radio frequency signals output by the phase shifting matrix circuit, and the phase difference between the output radio frequency signals is increased. Meanwhile, the second adjustable phase shifter is added to assist in carrying out phase shifting at more angles, so that the condition that large-angle phase shifting is carried out through the first coupler, the second coupler, the third coupler and the fourth coupler in practical application can be reduced, and the controller only needs to carry out small-range phase shifting angle adjustment on at least one coupler of the first coupler, the second coupler, the third coupler and the fourth coupler, so that the scheme is realized according to rapidness and convenience, and the phase shifting precision of the phase shifting matrix circuit can be effectively improved.

In one possible embodiment, the phase shift angles of the second adjustable phase shifter are ±22.5°, ±45°, and ±67.5°.

In the embodiment of the application, the second adjustable phase shifter is used as a phase shifting device coupled in the phase shifting matrix circuit, and can be any adjustable phase shifter theoretically, but the overall design concept of the phase shifting matrix circuit keeps the concept of simple system, convenient adjustment, rapid and accurate phase shifting. The higher the accuracy of the adjustable phase shifter, the more complex the structure and control is often represented. Therefore, in the embodiment of the application, the phase shift angle of the second adjustable phase shifter can be set in a smaller range and adjusted in a larger step. For example, in the range of 0 DEG to + -67.5 DEG, 22.5 DEG is used as an adjustable step, and the phase-shifting angle is adjusted in the forward direction or the reverse direction. At this time, the phase shift angle with higher precision is adjusted through the first coupler, the second coupler, the third coupler and the fourth coupler, and then the second adjustable phase shifter adjusts 0 degrees to +/-67.5 degrees on the basis of the adjustment of the first coupler, the second coupler, the third coupler and the fourth coupler.

In one possible implementation, the phase shift matrix circuit further includes a first phase shifter; the first phase shifter is coupled to the fourth end of the third coupler and the controller; the first phase shifter is used for shifting the phase of the radio frequency signal input or output to the fourth end of the third coupler; the controller is used for controlling whether the first phase shifter shifts the phase.

In the embodiment of the application, the first phase shifter shifts the phase of the radio frequency signal input or output from the fourth end of the third coupler, so that one path of radio frequency signal in four paths of radio frequency signals is shifted, and more phase differences among the four paths of radio frequency signals are selected. Meanwhile, the phase difference between the four radio frequency signals can be adjusted through the first phase shifter, so that the phase difference between the four radio frequency signals can be increased or decreased in the same steps.

In one possible embodiment, the phase shift angle of the first phase shifter is ±90°.

In the embodiment of the application, in a phase shifting scene based on the first coupler, the second coupler, the third coupler, the fourth coupler, and the first adjustable phase shifter and the second adjustable phase shifter, the four radio frequency signals can be adjusted under a phase difference of 90 degrees, and then the first phase shifter is used for performing phase adjustment of 90 degrees again, so that 180-degree phase difference adjustment is realized.

In one possible embodiment, the method further comprises a second phase shifter; the second phase shifter is coupled to the fourth end of the fourth coupler and the controller; the second phase shifter is used for shifting the phase of the radio frequency signal input or output to the fourth end of the fourth coupler; the controller is used for controlling whether the second phase shifter shifts the phase.

In the embodiment of the application, the second phase shifter shifts the phase of the radio frequency signal input or output from the fourth end of the fourth coupler, so that one path of radio frequency signal in the four paths of radio frequency signals is shifted, and more phase differences among the four paths of radio frequency signals are selected. Meanwhile, the phase difference between the four radio frequency signals can be adjusted through the second phase shifter, so that the phase difference between the four radio frequency signals can be increased or decreased in the same steps.

In one possible embodiment, the phase shift angle of the second phase shifter is ±90°.

In the embodiment of the application, in a scene of phase shifting based on the first coupler, the second coupler, the third coupler, the fourth coupler, and the first adjustable phase shifter and the second adjustable phase shifter, the four radio frequency signals can be adjusted under a phase difference of 90 degrees, and then the first phase shifter and the second phase shifter are used for performing phase adjustment of 90 degrees again to realize 180-degree phase difference adjustment. Meanwhile, by combining the first phase shifter with the second phase shifter, the first coupler, the second coupler, the third coupler, the fourth coupler, the first adjustable phase shifter and the second adjustable phase shifter, the phase difference of four paths of radio frequency signals output by the phase shift matrix circuit can be increased or decreased in a plurality of fixed steps.

In a possible implementation manner, the phase shift matrix circuit further comprises a third phase shifter; the third end of the third coupler, the fourth end of the third coupler, the third end of the fourth coupler and the fourth end of the fourth coupler are respectively coupled with a third phase shifter correspondingly, and radio frequency signals are input or input through the coupled third phase shifters; the third phase shifter is also coupled to the controller; the third phase shifter is used for shifting the phase of the radio frequency signals input or output by the third end of the third coupler, the fourth end of the third coupler, the third end of the fourth coupler and the fourth end of the fourth coupler; the controller is used for controlling whether the third phase shifter shifts the phase.

In the embodiment of the application, corresponding third phase shifters are arranged for four paths of radio frequency signals, and the phase of the four paths of radio frequency signals can be shifted by a certain angle range through the third phase shifters under the condition of already shifting the phase.

In one possible embodiment, the phase shift angles of the four third phase shifters are ±180°.

In the embodiment of the application, the phase shift angle of the range of 90 degrees can be adjusted through the first phase shifter and the second phase shifter, the phase shift angle of the range of 180 degrees can be adjusted through the third phase shifter, and at the moment, the four couplers can realize the adjustment of the phase difference of the phase shift matrix circuit in the range of 360 degrees only by adjusting the phase shift angle in the range of 90 degrees. Meanwhile, under the condition of setting the first adjustable phase shifter and the second adjustable phase shifter, the adjusting angle ranges of the four couplers can be reduced, in practical application, the adjustment of a larger phase difference can be realized only by adjusting smaller phase shifting angles through the four couplers, so that the scheme is easier to realize, the phase shifting precision is high, and meanwhile, the structure of the phase shifting matrix circuit is simpler.

In one possible implementation manner, the first coupler, the second coupler, the third coupler and the fourth coupler are inductance type adjustable couplers; the inductance type adjustable coupler comprises a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a first inductance and a second inductance; the first end of the first inductor is coupled with a first capacitor which is grounded, and the first end of the first inductor is used as the first end of the inductance type adjustable coupler; the second end of the first inductor is coupled with a third capacitor which is grounded, and the second end of the first inductor is used as the third end of the inductance type adjustable coupler; the first end of the second inductor is coupled with a second capacitor which is grounded, and the first end of the second inductor is used as the second end of the inductance type adjustable coupler; the second end of the second inductor is coupled with a fourth capacitor which is grounded, and the second end of the second inductor is used as the fourth end of the inductance type adjustable coupler; the first end of the fifth capacitor is coupled to the coupling point of the first inductor and the first capacitor, and the second end of the fifth capacitor is coupled to the coupling point of the second inductor and the second capacitor; the first end of the sixth capacitor is coupled to the coupling point of the first inductor and the third capacitor, and the second end of the sixth capacitor is coupled to the coupling point of the second inductor and the fourth capacitor; the controller is coupled with the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor and the sixth capacitor respectively and is used for controlling capacitance values of the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor and the sixth capacitor so as to control a phase difference between a first through passage and a first coupling passage of the inductance type adjustable coupler or to control a phase difference between a second through passage and a second coupling passage of the inductance type adjustable coupler.

According to the embodiment of the application, the capacitance values of the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor and the sixth capacitor are adjusted, so that the phase difference between the first through passage and the first coupling passage can be adjusted, and the phase difference between the second through passage and the second coupling passage can be adjusted. Thereby realizing the adjustment of the phase difference between the two paths of radio frequency signals output by the coupler. Meanwhile, when the phase difference between the through passage and the coupling passage is adjusted, the phase shift angle of the phase shift of the radio frequency signal can be adjusted through the adjustment of the through passage so as to adjust the phase difference between the through passage and the coupling passage; the phase shift angle of the phase shift of the radio frequency signal can be adjusted by adjusting the coupling passage so as to adjust the phase difference between the through passage and the coupling passage; the phase difference between the through passage and the coupling passage can also be adjusted by adjusting the phase shift angle of the through passage and the coupling passage for respectively shifting the phase of the radio frequency signal.

In a second aspect, an embodiment of the present application further provides a beamforming circuit, where the beamforming circuit includes an interface circuit, a phase shift matrix circuit as described in the first aspect, and a plurality of radio frequency front ends; the phase shift matrix circuit comprises a first coupler, a second coupler, a third coupler and a fourth coupler; the first end of the interface circuit is respectively coupled to the first end of the first coupler, the second end of the first coupler, the first end of the second coupler and the second end of the second coupler; the second end of the interface circuit is coupled to the frequency conversion unit; the plurality of radio frequency front ends are respectively and correspondingly coupled to the third end of the third coupler, the fourth end of the third coupler, the third end of the fourth coupler and the fourth end of the fourth coupler; the interface circuit is used for receiving the radio frequency signals output by the frequency conversion unit and outputting the radio frequency signals to the plurality of radio frequency front ends through the phase shift matrix circuit, or inputting the radio frequency signals output by the plurality of radio frequency front ends through the phase shift matrix circuit; the plurality of radio frequency front ends are used for receiving radio frequency signals sent by the transceiver and outputting the radio frequency signals to the interface circuit through the phase-shifting matrix circuit, or inputting the radio frequency signals output by the interface circuit through the phase-shifting matrix circuit and sending the radio frequency signals to the transceiver; the phase-shifting matrix circuit is used for shifting the phase of the radio frequency signals input into the phase-shifting matrix circuit and outputting the radio frequency signals to the interface circuit or a plurality of radio frequency front ends.

According to the embodiment of the application, the interface circuit is used for inputting the radio frequency signals to the phase-shifting matrix circuit, the phase-shifting matrix circuit is used for shifting the input radio frequency signals into multiple paths of radio frequency signals with different phases, and the radio frequency signals are transmitted through the corresponding radio frequency front end, so that the beam forming of the radio frequency signals is realized. Meanwhile, the radio frequency front end can also receive radio frequency signals transmitted by other equipment, and output the radio frequency signals to the phase-shifting matrix circuit, the phase-shifting matrix circuit shifts the phase of the radio frequency signals output by the radio frequency front end, and outputs the radio frequency signals to the interface circuit, and the interface circuit outputs the radio frequency signals to a subsequent related data processing device.

In one possible implementation, the interface circuit comprises a single-pass signal interface circuit; the single-way signal interface circuit comprises a first switch and a single-pole four-throw switch; the first end of the first switch is coupled to the frequency conversion unit and is used for inputting the single-path radio frequency signal output by the frequency conversion unit or outputting the radio frequency signal to the frequency conversion unit; the second end of the first switch is coupled with the first end of the single pole four throw switch and is correspondingly coupled to the first end of the first coupler, the second end of the first coupler, the first end of the second coupler and the second end of the second coupler through four second ends of the single pole four throw switch.

According to the embodiment of the application, one path of radio frequency signals are input into the phase-shift matrix circuit or one path of radio frequency signals output by the phase-shift matrix circuit are received through the single path signal interface circuit. The embodiment of the application can be applied to an application scene of carrying out beam forming by a single-channel radio frequency signal input phase-shifting matrix circuit.

In one possible implementation, the interface circuit further comprises a multiple-input multiple-output interface circuit; the multi-input multi-output interface circuit comprises a second switch, a third switch, a fourth switch and a fifth switch which are respectively coupled with the frequency conversion unit; the second switch is also coupled to the first end of the first coupler; the third switch is also coupled to the second end of the first coupler; the fourth switch is coupled to the first end of the second coupler; a fifth switch coupled to the second end of the second coupler; the second switch, the third switch, the fourth switch and the fifth switch are respectively used for receiving one path of radio frequency signals in the multiple paths of radio frequency signals output by the frequency conversion unit, or outputting the radio frequency signals to the frequency conversion unit.

In the embodiment of the application, one path of radio frequency signals in the multiple paths of radio frequency signals are input to the phase-shift matrix circuit through the multiple-input multiple-output interface circuit. The method and the device can be applied to the scene that multipath radio frequency signals are subjected to phase shifting and transmitted through beam forming.

In a third aspect, embodiments of the present application provide a phase shifting method, which is based on a phase shifting matrix circuit; the phase shift matrix circuit comprises a first coupler, a second coupler, a third coupler and a fourth coupler; the first end of the first coupler is coupled with the first end of the third coupler; the second end of the first coupler is coupled with the first end of the fourth coupler; the third end of the second coupler is coupled with the second end of the third coupler; the fourth end of the second coupler is coupled with the second end of the fourth coupler; the controller is respectively coupled with the first coupler, the second coupler, the third coupler and the fourth coupler; for each of the first, second, third, and fourth couplers: a first through passage is arranged between the first end and the third end, a first coupling passage is arranged between the first end and the fourth end, a second through passage is arranged between the second end and the fourth end, and a second coupling passage is arranged between the second end and the third end; the method comprises the following steps: the phase difference between the first through path and the first coupling path of each coupler is controlled, or the phase difference between the second through path and the second coupling path is controlled.

In one possible implementation, the phase shift matrix circuit further includes a first tunable phase shifter; the third end of the first coupler is coupled with the first end of the third coupler through the first adjustable phase shifter; the first adjustable phase shifter is used for shifting the phase of the radio frequency signal transmitted between the third end of the first coupler and the first end of the third coupler; the method further comprises the steps of: the phase shift angle of the first adjustable phase shifter is controlled.

In one possible implementation, the phase shift matrix circuit further includes a second tunable phase shifter; the fourth end of the second coupler is coupled with the second end of the fourth coupler through a second adjustable phase shifter; the second adjustable phase shifter is used for shifting the phase of the radio frequency signal transmitted between the fourth end of the second coupler and the second end of the fourth coupler; the method further comprises the steps of: and controlling the phase shift angle of the second adjustable phase shifter.

In one possible implementation, the phase shift matrix circuit further includes a first phase shifter; the first phase shifter is coupled to the fourth end of the third coupler and the controller; the first phase shifter is used for shifting the phase of the radio frequency signal input or output to the fourth end of the third coupler; the method further comprises the steps of: and controlling whether the first phase shifter shifts the phase or not.

In one possible implementation, the phase shift matrix circuit further includes a second phase shifter; the second phase shifter is coupled to the fourth end of the fourth coupler and the controller; the second phase shifter is used for shifting the phase of the radio frequency signal input or output to the fourth end of the fourth coupler; the method further comprises the steps of: and controlling whether the second phase shifter shifts the phase.

In a possible implementation, the phase shift matrix circuit further comprises a third phase shifter; the third end of the third coupler, the fourth end of the third coupler, the third end of the fourth coupler and the fourth end of the fourth coupler are respectively coupled with a third phase shifter correspondingly, and radio frequency signals are input or input through the coupled third phase shifters; the third phase shifter is also coupled to the controller; the third phase shifter is used for shifting the phase of the radio frequency signals input or output by the third end of the third coupler, the fourth end of the third coupler, the third end of the fourth coupler and the fourth end of the fourth coupler; the method further comprises the steps of: and controlling whether the third phase shifter shifts the phase.

In one possible implementation manner, the first coupler, the second coupler, the third coupler and the fourth coupler are inductance type adjustable couplers; the inductance type adjustable coupler comprises a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a first inductance and a second inductance; the first end of the first inductor is coupled with a first capacitor which is grounded, and the first end of the first inductor is used as the first end of the inductance type adjustable coupler; the second end of the first inductor is coupled with a third capacitor which is grounded, and the second end of the first inductor is used as the third end of the inductance type adjustable coupler; the first end of the second inductor is coupled with a second capacitor which is grounded, and the first end of the second inductor is used as the second end of the inductance type adjustable coupler; the second end of the second inductor is coupled with a fourth capacitor which is grounded, and the second end of the second inductor is used as the fourth end of the inductance type adjustable coupler; the first end of the fifth capacitor is coupled to the coupling point of the first inductor and the first capacitor, and the second end of the fifth capacitor is coupled to the coupling point of the second inductor and the second capacitor; the first end of the sixth capacitor is coupled to the coupling point of the first inductor and the third capacitor, and the second end of the sixth capacitor is coupled to the coupling point of the second inductor and the fourth capacitor; the method specifically comprises the following steps: the capacitance values of the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor and the sixth capacitor are controlled to control the phase difference between the first through path and the first coupling path of the inductance-type tunable coupler, or to control the phase difference between the second through path and the second coupling path of the inductance-type tunable coupler.

In a fourth aspect, an embodiment of the present application provides a transceiver, where the transceiver includes a frequency conversion unit and a beamforming circuit as described in the second aspect above; the wave beam forming circuit is used for inputting one or more paths of radio frequency signals generated by the frequency conversion unit and transmitting the input radio frequency signals to another receiving and transmitting device in different phases; or the wave beam forming circuit is used for receiving radio frequency signals with different phases sent by another receiving and transmitting device, shifting the received radio frequency signals into the same phase and then outputting the same to the frequency conversion unit.

In a fifth aspect, an embodiment of the present application further provides a signal transmission system, where the signal transmission system includes at least two transceiver devices described in the fourth aspect; the transceiver devices transmit and receive radio frequency signals of different phases.

In a sixth aspect, embodiments of the present application further provide a chip system. The system-on-chip includes at least one processor and at least one interface circuit. The at least one processor and the at least one interface circuit may be interconnected by wires. The processor is configured to support the system-on-a-chip to perform the functions or steps of the method described in the third aspect above, and the at least one interface circuit may be configured to receive signals from other devices (e.g., memory) or to send signals to other devices (e.g., communication interfaces). The system-on-chip may include a chip, and may also include other discrete devices.

In a seventh aspect, embodiments of the present application provide a computer-readable storage medium, where the computer-readable storage medium includes instructions that, when executed on a transceiver device or a chip system as described in the fourth aspect, cause the transceiver device or the chip system to perform a method as described in the third aspect.

In an eighth aspect, embodiments of the present application also provide a computer program product comprising instructions which, when run on the above-described chip system or transceiver device, cause the chip system or transceiver device to perform the functions or steps of the above-described method embodiments, e.g. to perform the method as described in the above third aspect.

Technical effects of the third, fourth, fifth, sixth, seventh and eighth aspects may be referred to the relevant descriptions of the first and second aspects, and are not repeated.

Drawings

Fig. 1 is a schematic diagram of a beamforming principle provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of a beamforming circuit according to an embodiment of the present application;

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

Fig. 4 is a schematic structural diagram of a transceiver provided in an embodiment of the present application;

fig. 5 is a schematic structural diagram of another beamforming circuit according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a phase shift matrix circuit according to an embodiment of the present application;

fig. 7 is a schematic structural diagram of a coupler according to an embodiment of the present disclosure;

fig. 8 is a schematic structural diagram of an inductance type tunable coupler according to an embodiment of the present disclosure;

fig. 9 is a schematic structural diagram of a variable-voltage tunable coupler according to an embodiment of the present disclosure;

fig. 10 is a schematic structural diagram of another phase shift matrix circuit according to an embodiment of the present disclosure;

fig. 11 is a schematic structural diagram of a first adjustable phase shifter according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of another phase shift matrix circuit according to an embodiment of the present disclosure;

fig. 13 is a schematic diagram of controlling whether a phase shifter is operated according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of an interface circuit and a frequency conversion unit according to an embodiment of the present application;

fig. 15 is a schematic structural diagram of a radio frequency front end according to an embodiment of the present application;

fig. 16 is a schematic flow chart of a phase shifting method according to an embodiment of the present application;

Fig. 17 is a schematic diagram of simulation of a phase shifting effect of a coupler according to an embodiment of the present disclosure;

fig. 18 is a schematic simulation diagram of the insertion loss and isolation of each end of a coupler according to an embodiment of the present disclosure;

FIG. 19 is a schematic diagram illustrating a phase shifting effect of another coupler according to an embodiment of the present disclosure;

fig. 20 is a schematic diagram of simulation of insertion loss and isolation of each end of another coupler according to an embodiment of the present disclosure;

fig. 21 is a schematic diagram of a simulation of a phase shift effect of a phase shift matrix circuit according to an embodiment of the present application;

FIG. 22 is a schematic diagram illustrating a phase shift effect of a phase shift matrix circuit according to an embodiment of the present disclosure;

FIG. 23 is a schematic diagram illustrating a phase shift effect of a phase shift matrix circuit according to an embodiment of the present disclosure;

FIG. 24 is a schematic diagram illustrating a phase shift effect of a phase shift matrix circuit according to an embodiment of the present disclosure;

FIG. 25 is a schematic diagram illustrating a phase shift effect of a phase shift matrix circuit according to an embodiment of the present disclosure;

fig. 26 is a schematic diagram illustrating a phase shift effect of a phase shift matrix circuit according to another embodiment of the present disclosure;

FIG. 27 is a schematic diagram illustrating a phase shift effect of a phase shift matrix circuit according to an embodiment of the present disclosure;

FIG. 28 is a schematic diagram illustrating a phase shift effect of a phase shift matrix circuit according to an embodiment of the present disclosure;

fig. 29 is a schematic diagram illustrating a simulation of a phase shift effect of a phase shift matrix circuit according to another embodiment of the present disclosure;

FIG. 30 is a schematic diagram illustrating a phase shift effect of a phase shift matrix circuit according to an embodiment of the present disclosure;

FIG. 31 is a schematic diagram illustrating a phase shift effect of a phase shift matrix circuit according to an embodiment of the present disclosure;

FIG. 32 is a schematic diagram illustrating a phase shift effect of a phase shift matrix circuit according to an embodiment of the present disclosure;

fig. 33 is a schematic structural diagram of a chip system according to an embodiment of the present application.

Detailed Description

It should be noted that the terms "first," "second," and the like in the embodiments of the present application are used for distinguishing between the same type of feature, and not to be construed as indicating a relative importance, quantity, order, or the like.

The terms "exemplary" or "such as" and the like, as used in connection with embodiments of the present application, are intended to be exemplary, or descriptive. Any embodiment or design described herein as "exemplary" or "for example" should not be construed as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

The terms "coupled" and "connected" in connection with embodiments of the present application are to be construed broadly, and may refer, for example, to a physical direct connection, or to an indirect connection via electronic devices, such as, for example, a connection via electrical resistance, inductance, capacitance, or other electronic devices.

First, some basic concepts of the embodiments of the present application will be explained:

with the continuous development of communication technology, the requirements on the communication rate in the industry are higher and higher, and in order to improve the communication rate, common methods include expanding the bandwidth of a transmission signal, improving the modulation order of the transmission signal, and the like. But implementation of these methods requires a higher signal-to-noise ratio of the transmitted signal. In the scenario of wireless communication, when a transmission signal is transmitted in space, the transmission signal gradually attenuates with the increase of the distance, so that the signal-to-noise ratio of the transmission signal is seriously reduced. For this reason, the energy of the transmitted signal is often concentrated by shaping the transmitted signal into a narrow beam, so as to improve the signal-to-noise ratio and the transmission distance of the transmitted signal, which is the beamforming. Currently, beamforming has been applied in the field of wireless communications in a large scale, especially in fifth generation mobile communication technology (5th generation mobile communication technology,5G) to increase the propagation distance of a transmission signal in the millimeter wave band.

Beamforming (beamforming) is also known as beamforming, spatial filtering. The principle of beamforming is to use the interference principle of waves. The interference principle of the wave means: when the wave crest and the wave crest or the wave trough and the wave trough meet, the energy is added, the wave crest is higher, and the wave trough is deeper. When the wave crest and the wave trough meet, the wave crest and the wave trough cancel each other. Beamforming may be implemented by mirrors, lenses, and phased array units. Beamforming can be used for both signal transmitting and signal receiving terminals. Compared with a reflector and a lens, when the phased array unit is used for realizing beam forming, the beam direction angle can be regulated and controlled, and the system has higher flexibility.

The current common way to implement beamforming by using phased array units includes a beam reconfigurable antenna array and an active phased array, both of which are essentially aggregation of energy of a transmitted signal to improve signal-to-noise ratio and transmission distance of the transmitted signal. The beamforming of the beam reconfigurable antenna array is mainly realized by changing the number and the phase of the antenna array, and is mostly of a passive structure, while an active phased array generally adopts a phase shifter unit to realize the phase adjustment of multiple paths of signals, and a chip-level solution is generally adopted to realize the beamforming in the millimeter wave field. When beamforming is implemented by a phased array unit, parameters of phase shifter units of the phased array unit are adjusted so that Radio Frequency (RF) signals of certain angles obtain constructive interference (constructive interference, CI) and radio frequency signals of other angles obtain destructive interference (destructive interference, DI), thereby generating a beam with directivity to increase the propagation distance of the transmitted RF signals. As shown in fig. 1, the two transmitting units respectively transmit a radio frequency signal, wherein the dotted line represents a peak of the radio frequency signal, and the solid line represents a trough of the radio frequency signal. The black dots in the figure represent the positions where the peaks and peaks of the two radio frequency signals meet in the air, or the positions where the troughs and troughs of the two radio frequency signals meet in the air. As shown in fig. 1, when the peaks and the peaks of the two radio frequency signals meet in the air, or the troughs and the troughs of the two radio frequency signals meet in the air, constructive interference is generated, so that signal beams with stronger directivity and longer transmission distance are generated, and destructive interference is generated when the troughs and the peaks of the two radio frequency signals meet in the air, and the radio frequency signals in the propagation direction gradually disappear. The beam with certain directivity can be shaped through constructive interference and destructive interference, and the propagation distance of the shaped beam can be further due to the constructive interference. Meanwhile, in the process of carrying out beam forming through the phased array unit, the positions where different wave crests of the radio frequency signals meet in the air and wave troughs among the wave crests and wave troughs of the radio frequency signals and the wave troughs among the wave crests can be adjusted by adjusting the phases of the radio frequency signals transmitted by the transmitting unit, so that the transmitting angle and the like of the wave beams generated by the beam forming in the air are determined. In practical application, a plurality of transmitting units are often required to transmit a plurality of radio frequency signals with different phases, so that a better beam forming effect can be obtained.

Phase shifters are used as core modules of active phased arrays, and can be generally classified into active phase shifters and passive phase shifters, and common structures include switched capacitor/inductor phase shifters, active vector addition phase shifters, hybrid couplers (HP), and the like. The structure of the switch capacitor/inductance type phase shifter has larger insertion loss, is suitable for a low-frequency band phased array, but has larger chip area. The structure of the active vector addition type phase shifter can provide additional signal gain, is suitable for millimeter wave and terahertz phased arrays, but can additionally increase the power consumption of a circuit. The 90-degree hybrid coupler has a simple structure, can be used for millimeter wave phased array systems, and has lower power consumption compared with a switched capacitor/inductor type phase shifter and an active vector addition type phase shifter.

The embodiment of the application proposes a beamforming circuit, as shown in fig. 2, where the beamforming circuit 3 includes a butler matrix 31 and a plurality of radio frequency front ends 32. The butler matrix 31 includes a first hybrid coupler 311, a second hybrid coupler 312, a third hybrid coupler 313, a fourth hybrid coupler 314, a first 45 phase shifter 315, a second 45 phase shifter 316, a first cross coupler 317, and a second cross coupler 318. Wherein the first hybrid coupler 311, the second hybrid coupler 312, the third hybrid coupler 313 and the fourth hybrid coupler 314 are all 90 ° hybrid couplers. The third end of the first hybrid coupler 311 is coupled to the first end of the third hybrid coupler 313 through a first 45 phase shifter 315; the fourth end of the first hybrid coupler 311 is coupled to the first end of the fourth hybrid coupler 314 through a first cross coupler 317. The third end of the second hybrid coupler 312 is coupled to the second end of the third hybrid coupler 313 through a first cross coupler 317; the fourth end of the second hybrid coupler 312 is coupled to the second end of the fourth hybrid coupler 314 through a second 45 deg. phase shifter 316. The first and second ends of the first hybrid coupler 311 are coupled to the frequency conversion unit 2; the first and second ends of the second hybrid coupler 312 are coupled to the frequency conversion unit 2. The frequency conversion unit 2 is configured to output a radio frequency signal to any one of a first end of the first hybrid coupler 311, a second end of the first hybrid coupler 311, a first end of the second hybrid coupler 312, and a second end of the second hybrid coupler 312; alternatively, the frequency conversion unit 2 is configured to input the radio frequency signal output by the first end of the first hybrid coupler 311, the second end of the first hybrid coupler 311, the first end of the second hybrid coupler 312, and the second end of the second hybrid coupler 312. The third end of the third hybrid coupler 313, the fourth end of the third hybrid coupler 313, the third end of the fourth hybrid coupler 314, and the fourth end of the fourth hybrid coupler 314 are respectively coupled to one rf front end 32, for outputting the phase-shifted rf signal to the corresponding rf front end 32, and/or for inputting the rf signal sent by the other transceiver 2 received by the rf front end 32.

Illustratively, a single 90 ° hybrid coupler has a pass-through path between a first end and a third end, a coupling path between the first end and a fourth end, a pass-through path between the second end and the fourth end, and a coupling path between the second end and the third end. For a 90 ° hybrid coupler, when a radio frequency signal is input from one port, a radio frequency signal phase-shifted by-90 ° is output from the corresponding port through a through path, and a radio frequency signal phase-shifted by-180 ° from the original phase is output through a coupling path, for example, a radio frequency signal phase 0 ° is input from a first end, a radio frequency signal phase-90 ° is output from a third end, and a radio frequency signal phase-180 ° is output from a fourth end. The first end of the first reflective phase shifter 311 is used as the first port of the butler matrix 31, the second end of the first reflective phase shifter 311 is used as the second port of the butler matrix 31, the first end of the second reflective phase shifter 312 is used as the third port of the butler matrix 31, the second end of the second reflective phase shifter 312 is used as the fourth port of the butler matrix 31, the third end of the third reflective phase shifter 313 is used as the fifth port of the butler matrix 31, the third end of the fourth reflective phase shifter 314 is used as the sixth port of the butler matrix 31, the fourth end of the third reflective phase shifter 313 is used as the seventh port of the butler matrix 31, and the fourth end of the fourth reflective phase shifter 314 is used as the eighth port of the butler matrix 31. Then a radio frequency signal with an initial phase of 0 ° is input to the first port of the first reflective phase shifter 311, and four radio frequency signals stepped by-45 ° phase difference can be output from the fifth port to the eighth port. Similarly, when the rf signal is output to the second port of the butler matrix 31, four paths of rf signals stepped by 135 ° are output from the fifth port to the eighth port of the butler matrix 31, respectively. When the radio frequency signals are output to the third port of the butler matrix 31, four paths of radio frequency signals stepped by-135 DEG phase difference are respectively output from the fifth port to the eighth port of the butler matrix 31. When the rf signal is output to the fourth port of the butler matrix 31, four rf signals stepped by 45 ° are output from the fifth port to the eighth port of the butler matrix 31, respectively.

In the embodiment of the present application, as shown in fig. 2, the beamforming circuit 3 can only output four radio frequency signals with four different phase difference steps (i.e. 45 ° for phase difference step, 135 ° for phase difference step and 135 ° for phase difference step). If it is required to output radio frequency signals having more different kinds of phase differences, it is required to boost the number of four ports outputting radio frequency signals to eight ports by increasing the number of 90 ° hybrid couplers. This approach results in doubling the product area at the same time as the cost increases. Meanwhile, as the ports for outputting the radio frequency signals are changed into eight ports, the ports for inputting the radio frequency signals are also changed into eight ports, and the selection switch circuits corresponding to the ports are required to be adaptively increased, so that the insertion loss of the radio frequency signals is greatly increased, and the design difficulty of a scheme is also increased.

The embodiment of the application proposes a signal transmission system, as shown in fig. 3, which comprises a first transceiver device 1 and a second transceiver device 7. The first transceiver device 1 is configured to transmit radio frequency signals with different phases to the second transceiver device 7, and receive radio frequency signals transmitted by the second transceiver device 7. As shown in fig. 4, the first transceiver 1 includes a frequency conversion unit 2 and a beam forming circuit 3. The frequency conversion unit 2 is used for outputting radio frequency signals to the beam forming circuit 3, the beam forming circuit 3 is used for inputting the radio frequency signals and generating a plurality of radio frequency signals with different phases for transmitting so as to realize beam forming of the transmitted radio frequency signals; the beam forming circuit 3 is further configured to receive the radio frequency signal sent by the second transceiver 7, adjust a phase of the received radio frequency signal, and output the phase to the frequency conversion unit 2. As shown in fig. 5, the beamforming circuit 3 includes a plurality of radio frequency front ends 32, an interface circuit 33, and a phase shift matrix circuit 34. The frequency conversion unit 2 is coupled via an interface circuit 33 to a phase shift matrix circuit 34, the phase shift matrix circuit 34 being coupled to a plurality of radio frequency front ends 32. The phase-shift matrix circuit 34 is used for inputting the radio frequency signal output by the frequency conversion unit 2 through the interface circuit 33, and shifting the radio frequency signal into a plurality of radio frequency signals with different phases for transmitting through the corresponding radio frequency front end 32. The phase shift matrix circuit 34 is further configured to input the rf signal received by the rf front end 32, phase shift the input rf signal, and output the phase-shifted rf signal to the frequency conversion unit 2 through the interface circuit 33. As shown in fig. 6, the phase shift matrix circuit 34 includes a first coupler 341, a second coupler 342, a third coupler 343, a fourth coupler 344, and a controller 345. The third terminal of the first coupler 341 is coupled to the first terminal of the third coupler 343; the fourth end of the first coupler 341 is coupled to the first end of the fourth coupler 344; a third terminal of the second coupler 342 is coupled to a second terminal of the third coupler 343; a fourth end of the second coupler 342 is coupled to a second end of the fourth coupler 344; the controller 345 is coupled to the first, second, third, and fourth couplers 341, 342, 343, 344, respectively. As shown in fig. 7, for each of the first, second, third, and fourth couplers 341, 342, 343, and 344: the first through passage is arranged between the first end and the third end, the first coupling passage is arranged between the first end and the fourth end, the second through passage is arranged between the second end and the fourth end, and the second coupling passage is arranged between the second end and the third end. The controller 345 is configured to control a phase difference between the first through path and the first coupling path of each coupler and/or to control a phase difference between the second through path and the second coupling path.

In the embodiment of the present application, as shown in fig. 6 and 7, for one coupler, when one rf signal is input, a phase shift angle a by which the first through path and the second through path can shift the phase of the rf signal is set, and a phase shift angle B by which the first coupling path and the second coupling path can shift the phase of the rf signal is set. The phase difference between the four paths of radio frequency signals output by the phase shift matrix circuit 34 can be adjusted by adjusting the difference between the phase shift angle a and the phase shift angle B, so that more radio frequency signals with different phase differences are output to the radio frequency front end 32 and transmitted by the radio frequency front end 32. By the beamforming circuit 3 shown in fig. 5 according to the embodiment of the present application, it is possible to realize the transmission of radio frequency signals with more different phase differences without increasing the system cost and the system complexity.

In some possible embodiments, for the first, second, third, and fourth couplers 341, 342, 343, 344, the phase differences between the through-paths and the coupling paths corresponding to the four couplers may be completely unequal, may be partially equal, and may be completely equal.

In this embodiment, taking an example of inputting a path of radio frequency signal to the first end of the first coupler 341, the third end and the fourth end of the first coupler 341 respectively output two paths of radio frequency signals (output through the first through path and the first coupling path), and the phase difference of the two paths of radio frequency signals is the phase difference between the first through path and the first coupling path of the first coupler 341, which may be referred to as the phase difference C. One path of radio frequency signal output from the third end of the first coupler 341 is input to the first end of the third coupler 343, and two paths of radio frequency signals are output through the third end and the fourth end of the third coupler 343, and the phase difference between the two paths of radio frequency signals is the phase difference between the first through path and the first coupling path of the third coupler 343, which can be referred to as the phase difference D. One path of radio frequency signal output from the fourth end of the first coupler 341 is input to the first end of the fourth coupler 344, and two paths of radio frequency signals are output through the third end and the fourth end of the fourth coupler 344, and the phase difference between the two paths of radio frequency signals is the phase difference between the first through path and the first coupling path of the fourth coupler 344, which can be referred to as the phase difference E. The phase difference C, the phase difference D and the phase difference E can be completely unequal, can be partially equal, can be equal, and can be arranged and combined to obtain four paths of radio frequency signals with different phase differences through different forms.

In some possible embodiments, for one of the first, second, third, and fourth couplers 341, 342, 343, 344, the controller 345 controls the phase shift angles of the first through path and the first coupling path to shift the phase of the radio frequency signal to adjust the phase difference between the first through path and the first coupling path; the phase shift angle of the second through passage and the second coupling passage for shifting the phase of the radio frequency signal is controlled to adjust the phase difference between the second through passage and the second coupling passage.

In the embodiment of the application, a phase shift angle a by which the first through path and the second through path can shift the phase of the radio frequency signal is set, and a phase shift angle B by which the first coupling path and the second coupling path can shift the phase of the radio frequency signal is set. The controller 345 changes the value of the phase shift angle a and the value of the phase shift angle B simultaneously to thereby implement adjustment of the phase difference between the through-path and the coupling path to output radio frequency signals of different phase differences.

In some possible embodiments, for one of the first, second, third, and fourth couplers 341, 342, 343, 344, the controller 345 controls the phase shift angle by which the first pass path shifts the radio frequency signal to adjust the phase difference between the first pass path and the first coupling path. The controller 345 controls the phase shift angle by which the second through path shifts the radio frequency signal to adjust the phase difference between the second through path and the second coupling path.

In the embodiment of the application, a phase shift angle a is set for the first through path and the second through path to shift the phase of the radio frequency signal, and a phase shift angle B is set for the first coupling path and the second coupling path to shift the phase of the radio frequency signal. The controller 345 controls the phase shift angle B of the first and second coupling paths to shift the phase of the radio frequency signal to be constant, and adjusts the phase shift angle a of the first and second through paths to shift the phase of the radio frequency signal, thereby adjusting the phase difference between the through paths and the coupling paths to output radio frequency signals with different phase differences.

In some possible embodiments, for one of the first, second, third, and fourth couplers 341, 342, 343, 344, the controller 345 controls the phase shift angle by which the first coupling path shifts the phase of the radio frequency signal to adjust the phase difference between the first pass-through path and the first coupling path. The controller 345 controls the phase shift angle by which the second coupling path shifts the phase of the radio frequency signal to adjust the phase difference between the second through path and the second coupling path.

In the embodiment of the application, a phase shift angle a by which the first through path and the second through path can shift the phase of the radio frequency signal is set, and a phase shift angle B by which the first coupling path and the second coupling path can shift the phase of the radio frequency signal is set. The controller 345 controls the first through path and the second through path to maintain the phase shift angle a of the phase shift of the radio frequency signal unchanged, and adjusts the phase shift angle B of the radio frequency signal by the first coupling path and the second coupling path, thereby realizing the adjustment of the phase difference between the through path and the coupling path, and outputting radio frequency signals with different phase differences.

In some possible embodiments, as shown in fig. 8, the first, second, third, and fourth couplers 341, 342, 343, 344 are inductive tunable couplers 5, and the inductive tunable couplers 5 include a first capacitor 51, a second capacitor 52, a third capacitor 53, a fourth capacitor 54, a fifth capacitor 55, a sixth capacitor 56, a first inductor 57, and a second inductor 58. A first end of the first inductor 57 is coupled to the first capacitor 51 which is grounded, and the first end of the first inductor 57 serves as a first end of the inductive tunable coupler 5; the second end of the first inductor 57 is coupled to the third capacitor 53 which is grounded, and the second end of the first inductor 57 is used as the third end of the inductive tunable coupler 5; a first end of the second inductor 58 is coupled to the second capacitor 52, which is grounded, and the first end of the second inductor 58 serves as a second end of the inductive tunable coupler 5; a second end of the second inductor 58 is coupled to the fourth capacitor 54, which is grounded, and the second end of the second inductor 58 serves as a fourth end of the inductive tunable coupler 5; a first end of the fifth capacitor 55 is coupled to a coupling point of the first inductor 57 and the first capacitor 51, and a second end of the fifth capacitor 55 is coupled to a coupling point of the second inductor 58 and the second capacitor 52; a first end of the sixth capacitor 56 is coupled to the coupling point of the first inductor 57 and the third capacitor 53, and a second end of the sixth capacitor 56 is coupled to the coupling point of the second inductor 58 and the fourth capacitor 54. The controller 345 is coupled to the first capacitor 51, the second capacitor 52, the third capacitor 53, the fourth capacitor 54, the fifth capacitor 55 and the sixth capacitor 56, respectively, and is configured to control capacitance values of the first capacitor 51, the second capacitor 52, the third capacitor 53, the fourth capacitor 54, the fifth capacitor 55 and the sixth capacitor 56 to control a phase difference between the first through path and the first coupling path of the inductive tunable coupler 5, or/and to control a phase difference between the second through path and the second coupling path of the inductive tunable coupler 5.

Illustratively, the controller 345 controls the phase shift angle by which the first and second through-paths phase-shift the radio frequency signal to-90 °, and the controller 345 adjusts the phase shift angle by which the first and second coupling paths phase-shift the radio frequency signal in the range of-90 ° to-180 °.

In the embodiment of the present application, the controller 345 controls the values of the first capacitor 51, the second capacitor 52, the third capacitor 53, the fourth capacitor 54, the fifth capacitor 55 and the sixth capacitor 56, so that the phase difference between the first through path and the first coupling path and the phase difference between the second through path and the second coupling path can be adjusted by adjusting the phase shift angles of the first through path and the second coupling path while keeping the phase shift angles of the first through path and the second through path unchanged. Meanwhile, under the condition that the phase shift angles of the first coupling passage and the second coupling passage are kept unchanged according to different adjusted parameters, the phase difference between the first coupling passage and the first through passage and the phase difference between the second coupling passage can be adjusted by adjusting the phase shift angles of the first through passage and the second through passage. Or, according to different adjusted parameters, the phase difference between the first through passage and the first coupling passage and the phase difference between the second through passage and the second coupling passage are adjusted by adjusting the phase shift angles of the first through passage, the second through passage, the first coupling passage and the second coupling passage.

Illustratively, as shown in fig. 8, when the controller 345 controls the inductance value of the first inductor 57 and the second inductor 58 to be 3.5nH, controls the capacitance value of the first capacitor 51 and the third capacitor 53 to be 0.101117pF, controls the capacitance value of the second capacitor 52 and the fourth capacitor 54 to be 0.369867pF, controls the capacitance value of the fifth capacitor 55 to be 0.606212pF, and controls the capacitance value of the sixth capacitor 56 to be 0.165564pF, the phase shift angles of the first through path (i.e., between the first end and the third end of the inductive tunable coupler 5) and the second through path (i.e., between the second end and the fourth end of the inductive tunable coupler 5) of the inductive tunable coupler 5 are made to be-90 °, and the angles of the first coupling path (i.e., between the first end and the third end of the inductive tunable coupler 5) and the second coupling path (i.e., between the second end and the third end of the inductive tunable coupler 5) of the inductive tunable coupler 5 are made to be-180 °. At this time, the phase difference between the first through path and the first coupling path of the inductance-type tunable coupler 5 is 90 °. As shown in fig. 17, the effect of the phase difference between the third port and the fourth port of the inductance-type tunable coupler 5 in the case where the phase difference is 90 ° is shown, and as can be seen from fig. 17, the phase difference between the first through path and the first coupling path, and between the second through path and the second coupling path corresponds to a difference of 90 °. As shown in fig. 18, for the effect of the insertion loss and isolation between the ports of the inductive tunable coupler 5, the lowest curve in the figure is a schematic curve of the insertion loss and isolation between the first end and the fourth end of the inductive tunable coupler 5, the middle curve in the figure is a schematic curve of the insertion loss and isolation between the first end and the third end of the inductive tunable coupler 5, and the highest curve in the figure is a schematic curve of the insertion loss and isolation between the first end and the second end of the inductive tunable coupler 5. As can be seen from fig. 17 and fig. 18, the phase shift of the inductance type adjustable coupler 5 is accurate, and the insertion loss and isolation of each end meet the application requirements.

Illustratively, as shown in fig. 8, when the controller 345 controls the inductance value of the first inductor 57 and the second inductor 58 to be 3.5nH, controls the capacitance value of the first capacitor 51 and the third capacitor 53 to be 0.139862pF, controls the capacitance value of the second capacitor 52 and the fourth capacitor 54 to be 0.43027pF, controls the capacitance value of the fifth capacitor 55 to be 0.183875pF, and controls the capacitance value of the sixth capacitor 56 to be 0.73841pF, the phase shift angles of the first through path (i.e., between the first end and the third end of the inductive tunable coupler 5) and the second through path (i.e., between the second end and the fourth end of the inductive tunable coupler 5) of the inductive tunable coupler 5 are made to be-90 °, and the angles of the first coupling path (i.e., between the first end and the third end of the inductive tunable coupler 5) and the second coupling path (i.e., between the second end and the third end of the inductive tunable coupler 5) of the inductive tunable coupler 5 are made to be-135 °. At this time, the phase difference between the first through path and the first coupling path of the inductance-type tunable coupler 5 is 45 °. As shown in fig. 19, the effect of the phase difference between the third port and the fourth port of the inductance-type tunable coupler 5 in the case where the phase difference is 45 ° is shown, and as can be seen from fig. 19, the phase difference between the first through path and the first coupling path, and between the second through path and the second coupling path corresponds to a difference of 45 °. As shown in fig. 20, for the effect of the insertion loss and isolation between the ports of the inductive tunable coupler 5, the lowest curve in the figure is a schematic curve of the insertion loss and isolation between the first end and the fourth end of the inductive tunable coupler 5, the middle curve in the figure is a schematic curve of the insertion loss and isolation between the first end and the third end of the inductive tunable coupler 5, and the highest curve in the figure is a schematic curve of the insertion loss and isolation between the first end and the second end of the inductive tunable coupler 5. As can be seen from fig. 19 and 20, the inductance type adjustable coupler 5 has accurate phase shift, and the insertion loss and isolation of each end meet the application requirements.

In the embodiment of the present application, the controller 345 keeps the phase shift angle of the first through path and the second through path unchanged by-90 °, and changes the phase shift angle of the first coupling path and the second coupling path for shifting the radio frequency signal within the range of-90 ° to-180 °, so that the phase difference of the two paths of radio frequency signals output by the coupler is adjustable within 90 °, and according to the specific illustration provided in the embodiment of the present application, the phase shift angle of the first coupling path and the second coupling path for shifting the radio frequency signal is adjusted to-180 ° and-135 °.

Illustratively, as shown in fig. 9, the first, second, third, and fourth couplers 341, 342, 343, 344 may also be variable voltage type tunable couplers, which differ from the inductive type tunable coupler 5 shown in fig. 8 in that one transformer is used instead of the first and second inductors 57, 58. However, in essence, the structure of the transformer can also be regarded as an inductance where the two locations are relatively close. Therefore, the transformer-type adjustable coupler is identical to the inductance-type adjustable coupler 5 shown in fig. 8 in technical principle, and the specific technical principle and implementation effect can be referred to the description of the inductance-type adjustable coupler 5 shown in fig. 8, and the description is omitted here.

In some possible embodiments, as shown in fig. 10, the phase shift matrix circuit 34 further includes a first adjustable phase shifter 346; the third terminal of the first coupler 341 is coupled to the first terminal of the third coupler 343 through the first adjustable phase shifter 346; the first adjustable phase shifter 346 is configured to shift a phase of a radio frequency signal transmitted between the third end of the first coupler and the first end of the third coupler; the controller 345 is also coupled to the first adjustable phase shifter 346 for controlling the phase shift angle of the first adjustable phase shifter 346.

In this embodiment, by disposing the first adjustable phase shifter 346 between the third terminal of the first coupler 341 and the first terminal of the third coupler 343, the selection of the phase difference between the output four radio frequency signals can be increased based on the matrix shown in fig. 6.

Illustratively, the first adjustable phase shifter 346 may be an adjustable phase shifter with different adjustment accuracy and adjustment angle, such as an adjustment angle of 1 °, an adjustment angle of 15 °, or the like, depending on the accuracy of the adjusted phase.

In the embodiment of the present application, the first tunable phase shifter 346 is used as a tunable phase shifter coupled between the first coupler 341 and the third coupler 343, and may be any tunable phase shifter available in the market.

Illustratively, the phase shift angle of the first adjustable phase shifter 346 is-22.5, -45, -67.5.

In the embodiment of the present application, since the first adjustable phase shifter 346 is disposed in the phase shift matrix circuit 34, the design concept of the phase shift matrix circuit 34 and the butler matrix 31 formed by the conventional 90 ° hybrid coupler are close, and efficient and accurate phase shifting is required to be performed under the condition of ensuring the structure to be as simple as possible and reducing the power consumption of the product so as to realize beam forming. The higher the accuracy of the first adjustable phase shifter 346 and the larger the adjustable angular range, the more complex the structure will be. Therefore, the adjustable phase shifters with the adjustable phase shifting angles of-22.5 degrees, -45 degrees and-67.5 degrees are selected as the first adjustable phase shifter 346, so that the structure of the phase shifting matrix circuit 34 is as simple as possible outside the adjustment precision and the selection range of the phase differences of the four paths of radio frequency signals output by the phase shifting matrix circuit 34 are increased.

Optionally, the first adjustable phase shifter 346 is an adjustable phase shifter with adjustable phase shift angles of-22.5 °, -45 °, -67.5 °.

Alternatively, as shown in fig. 11, the first adjustable phase shifter 346 may be configured by connecting three adjustable phase shifters with an adjustable phase shift angle of-22.5 ° in series.

In the embodiment of the present application, as shown in fig. 11, when the first adjustable phase shifter 346 needs to be shifted by an angle of-22.5 °, any one of the three-22.5 ° adjustable phase shifters needs to be controlled to operate. When the first adjustable phase shifter 346 is required to shift the phase by an angle of-45 deg., only any two of the three-22.5 deg. adjustable phase shifters need to be controlled to operate. When the first adjustable phase shifter 346 is required to shift the phase by 67.5 degrees, the three-22.5 degrees adjustable phase shifters are controlled to work.

In some possible embodiments, as shown in fig. 10, the phase shift matrix circuit 34 further includes a second adjustable phase shifter 347; a fourth end of the second coupler 342 is coupled to a second end of the fourth coupler 344 through a second adjustable phase shifter 347; the second adjustable phase shifter 347 is configured to shift the phase of the rf signal transmitted between the fourth end of the second coupler 342 and the second end of the fourth coupler 344; the controller 345 is also coupled to the second adjustable phase shifter 347 for controlling the phase shift angle of the second adjustable phase shifter 347.

In the embodiment of the present application, by coupling the second tunable phase shifter 347 between the fourth terminal of the second coupler 342 and the second terminal of the fourth coupler 344, the selection of the phase difference between the output four radio frequency signals can be increased based on the phase shift matrix circuit 34 shown in fig. 6 and the phase shift matrix circuit 34 to which the first tunable phase shifter 346 is applied.

Illustratively, the second adjustable phase shifter 347 may be an adjustable phase shifter with different adjustment accuracy and adjustment angle, such as an adjustment angle of 1 °, an adjustment angle of 15 °, or the like, depending on the accuracy of the adjusted phase.

In the present embodiment, the second tunable phase shifter 347 is a tunable phase shifter coupled between the second coupler 342 and the fourth coupler 344, which may be any tunable phase shifter available in the market.

Illustratively, the phase shift angles of the second adjustable phase shifter 347 are-22.5 °, -45 °, -67.5 °.

For a more specific description of the second adjustable phase shifter 347, reference should be made to the above description of the first adjustable phase shifter 346, and thus a detailed description thereof will be omitted. Although fig. 10 shows a schematic structure including the first tunable phase shifter 346 and the second tunable phase shifter 347, the embodiment of the present application may be implemented in a case where the phase shift matrix circuit 34 includes either or both of the first tunable phase shifter 346 and the second tunable phase shifter 347, and thus the structure shown in fig. 10 should not be construed as limiting the application of the present application.

In some possible implementations, as shown in fig. 12, the phase shift matrix circuit 34 further includes a first phase shifter 348. The first phase shifter 348 is coupled to the fourth end of the third coupler 343 and to the controller 345; the first phase shifter 348 is used for shifting the phase of the rf signal input or output to the fourth terminal of the third coupler 343; the controller 345 is configured to control whether the first phase shifter performs phase shifting.

In this embodiment, by disposing the first phase shifter 348 at the fourth end of the third coupler 343, the phase shift of one radio frequency signal output by the fourth end of the third coupler 343 in the four radio frequency signals output by the phase shift matrix circuit 34 can be achieved, so as to adjust the phase difference between the output four radio frequency signals. Meanwhile, the first phase shifter 348 may also shift the phase of the rf signal input to the fourth terminal of the third coupler 343.

Illustratively, the phase shift angle of the first phase shifter 348 is-90 °.

In some possible embodiments, as shown in fig. 12, the phase shift matrix circuit 34 further includes a second phase shifter 349. A second phase shifter 349 is coupled to a fourth terminal of the fourth coupler 344 and to a controller 345; the second phase shifter 349 is used for shifting the phase of the rf signal input or output to the fourth terminal of the fourth coupler 344; the controller 345 is configured to control whether the second phase shifter 349 is phase shifted.

In this embodiment of the present application, by providing the second phase shifter 349 at the fourth end of the fourth coupler 344, the phase shift of one radio frequency signal output by the fourth end of the fourth coupler 344 in the four radio frequency signals output by the phase shift matrix circuit 34 can be achieved, so as to adjust the phase difference between the output four radio frequency signals. At the same time, the second phase shifter 349 may also phase shift the rf signal input to the fourth terminal of the fourth coupler 344.

Illustratively, the phase shift angle of the second phase shifter 349 is-90 °.

In some possible embodiments, as shown in fig. 12, a plurality of third phase shifters 340 are further included; the third end of the third coupler 343, the fourth end of the third coupler 343, the third end of the fourth coupler 344 and the fourth end of the fourth coupler 344 are respectively coupled to a third phase shifter 340, and a radio frequency signal is input or output through the coupled third phase shifter 340; the third phase shifter 340 is also coupled to a controller 345; the third phase shifter 340 is configured to shift a phase of a radio frequency signal input or output from the third terminal of the third coupler 343, the fourth terminal of the third coupler 343, the third terminal of the fourth coupler 344, and the fourth terminal of the fourth coupler 344; the controller 345 is configured to control whether the third phase shifter 340 performs phase shifting.

In the embodiment of the present application, the phase shift matrix circuit 34 without the third phase shifter 340 may shift the phase of the input rf signal within a certain angle range, and then transmit with a different phase. After the third phase shifter 340 is provided, the third phase shifter 340 may be controlled by the controller 345 to uniformly shift the four radio frequency signals by a certain angle, so as to adjust the phase of the finally transmitted radio frequency signal. And simultaneously, the phase shift of part of the radio frequency signals in the four radio frequency signals in the part of the third phase shifter 340 can be controlled, so that the phase difference between the four radio frequency signals can be adjusted. The controller 345 may also control none of the third phase shifters 340 to shift phase.

In some possible embodiments, for any one of the first adjustable phase shifter 346, the second adjustable phase shifter 347, the first phase shifter 348, the second phase shifter 349, and the third phase shifter 340, the device parameters of the phase shifters may be adjusted by the controller 345 to control the phase shifters to either not shift or to shift.

In some possible embodiments, for any one of the first tunable phase shifter 346, the second tunable phase shifter 347, the first phase shifter 348, the second phase shifter 349, and the third phase shifter 340, as shown in fig. 13, the phase shifter is connected in parallel with a switch, and when the phase shifter is required to perform phase shifting, the parallel switch is controlled to be turned off, and the phase shifter performs phase shifting on the input radio frequency signal. When the phase shifter is not needed to shift the phase, the parallel switch is controlled to be turned on so as to control the phase shifter not to shift the phase of the radio frequency signal.

In the embodiment of the application, compared with a mode of controlling whether the phase shifter works by changing the device parameters of the phase shifter, whether the phase shifter works is controlled by the parallel switch, the implementation of the scheme is simpler, and the operation is more convenient.

In some possible embodiments, as shown in fig. 14, the frequency conversion unit 2 comprises an up-conversion module 21 and a down-conversion module 22. The up-conversion module 21 is configured to generate a radio frequency signal from the high frequency signal and a baseband signal carrying data information, and output the radio frequency signal to the phase shift matrix circuit 34 through the interface circuit 33. The down-conversion module 22 is used for inputting the radio frequency signal output by the phase shift matrix circuit 34 through the interface circuit 33, and obtaining a baseband signal carrying data information from the input radio frequency signal.

In some possible implementations, as shown in fig. 14, interface circuit 33 includes a single-way signal interface circuit 331 and a multiple-input multiple-output interface circuit 332. The single-way signal interface circuit 331 includes a first switch 3311 and a single-pole, four-throw switch 3312; a first end of the first switch 3311 is coupled to the frequency conversion unit 2, and is used for inputting the single-path radio frequency signal output by the frequency conversion unit 2 or outputting the radio frequency signal to the frequency conversion unit 2; the second end of the first switch 3311 is coupled to the first end of the single pole four throw switch 3312 and is coupled to the first end of the first coupler 341, the second end of the first coupler 341, the first end of the second coupler 342, and the second end of the second coupler 342 through four second ends of the single pole four throw switch 3312, respectively. The mimo interface circuit 332 includes a second switch 3321, a third switch 3322, a fourth switch 3323, and a fifth switch 3324 coupled to the up-conversion module 21 and the down-conversion module 22 of the frequency conversion unit 2, respectively; the second switch 3321 is further coupled to the first end of the first coupler 341 and is configured to output the radio frequency signal output by the up-conversion module 21 to the first end of the first coupler 341 or output the radio frequency signal output by the first end of the first coupler 341 to the down-conversion module 22; the third switch 3322 is further coupled to the second end of the first coupler 341 and is configured to output the radio frequency signal output by the up-conversion module 21 to the second end of the first coupler 341 or output the radio frequency signal output by the second end of the first coupler 341 to the down-conversion module 22; the fourth switch 3323 is coupled to the first end of the second coupler 342 and is configured to output the radio frequency signal output by the up-conversion module 21 to the first end of the second coupler 342 or output the radio frequency signal output by the first end of the second coupler 342 to the down-conversion module 22; the fifth switch 3324 is coupled to the second end of the second coupler 342 for outputting the radio frequency signal output by the up-conversion module 21 to the second end of the second coupler 342 or outputting the radio frequency signal output by the second end of the second coupler 342 to the down-conversion module 22.

In the embodiment of the present application, as shown in fig. 14, the single-path signal interface circuit 331 and the multiple-input multiple-output interface circuit 332 are provided in the interface circuit 33. The MIMO interface circuit 332 receives multiple different rf signals output by the frequency conversion unit 2, and outputs the multiple different rf signals to the first end of the first coupler 341, the second end of the first coupler 341, the first end of the second coupler 342, and the second end of the second coupler 342, so as to implement a MIMO (multiple-input multiple-output) operation mode. One path of radio frequency signal output by the frequency conversion unit 2 is input through the single path signal interface circuit 331 so as to realize a single input and single output working mode.

In some possible embodiments, as shown in fig. 15, the radio frequency front end 32 includes a transmit front end 321 and a receive front end 322. The transmitting front end 321 is used for inputting and transmitting the radio frequency signal output by the phase shift matrix circuit 34. The receiving front end 322 is configured to receive radio frequency signals transmitted by other transceiver devices 1, and output the radio frequency signals to the phase shift matrix circuit 34.

In some possible embodiments, as shown in fig. 15, a third phase shifter 340 may be provided in the transmit front end 321 and the receive front end 322.

Illustratively, the third phase shifter 340 may be a separate device disposed in the transmit front end 321 and the receive front end 322.

Illustratively, a switch may be provided in the transmitting front end 321 and the receiving front end 322, and the third phase shifter 340 for 180 ° phase shifting may be implemented by switching the positive and negative differential signals by the switch.

The receiving front end 322 inputs the radio frequency signal and outputs the radio frequency signal to the phase shift matrix circuit 34, the phase shift matrix circuit 34 shifts the phase of the radio frequency signal input to the phase shift matrix circuit 34, and outputs the phase-shifted radio frequency signal to the down-conversion module 22 of the frequency conversion unit 2 through the single-channel signal interface circuit 331 or the multiple-input multiple-output interface circuit 332.

The phase shift matrix circuit 34 based on the structure shown in fig. 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 may be used to perform the phase shift method including step S101 and step S102 as shown in fig. 16:

in step S101, the controller 345 adjusts the phase shift angle of the phase shift matrix circuit 34.

In some possible embodiments, as shown in fig. 6, 7, 8, and 9, the controller 345 adjusts the phase differences between the through-paths and the coupling paths of the first, second, third, and fourth couplers 341, 342, 343, and 344.

Illustratively, as shown in fig. 6, the controller 345 adjusts the phase shift angles of the first and second through-paths of the four couplers to-90 ° and adjusts the phase shift angles of the first and second coupling paths of the four couplers to-180 °. At this time, after the frequency conversion unit 2 inputs a radio frequency signal to the first end of the first coupler 341 (i.e. the first port of the phase shift matrix circuit 34) through the interface circuit 33, the radio frequency signal is divided into two branches, wherein one branch is phase-shifted by-90 ° through the first through path of the first coupler 341 and then output from the third end of the first coupler 341 to the first end of the third coupler 343, and the other branch is phase-shifted by-180 ° through the first coupling path of the first coupler 341 and then output from the fourth end of the first coupler 341 to the first end of the fourth coupler 344. The first end of the third coupler 343 is configured to divide the radio frequency signal with the phase shift of-90 ° into two branches after inputting the radio frequency signal with the phase shift of-90 °, wherein one branch outputs the radio frequency signal with the phase shift of-180 ° from the third end of the third coupler 343 (i.e. the fifth port of the phase shift matrix circuit 34) after shifting the phase of-90 ° through the first through path of the fourth coupler 343, and the other branch outputs the radio frequency signal with the phase shift of-270 ° from the fourth end of the third coupler 343 (i.e. the seventh port of the phase shift matrix circuit 34) after shifting the phase of-180 ° through the first through path of the fourth coupler 343. The first end of the fourth coupler 344 is configured to divide the rf signal phase-shifted by-180 ° into two branches after inputting the rf signal phase-shifted by-180 °, wherein one branch outputs the rf signal phase-shifted by-270 ° from the third end of the fourth coupler 344 (i.e., the sixth port of the phase-shift matrix circuit 34) after phase-shifting by-90 ° through the first pass of the fourth coupler 344, and the other branch outputs the rf signal phase-shifted by-360 ° from the fourth end of the fourth coupler 344 (i.e., the eighth port of the phase-shift matrix circuit 34) after phase-shifting by-180 ° through the first coupling pass of the fourth coupler 344. At this time, the radio frequency signals output by the fifth port, the sixth port, the seventh port and the eighth port of the phase-shift matrix circuit 34 are the radio frequency signal with phase shift of-180 °, the radio frequency signal with phase shift of-270 ° and the radio frequency signal with phase shift of-360 °, which are equivalent to the radio frequency signals with phase difference of-90 ° (the radio frequency signals output by the sixth port and the seventh port can be regarded as the same radio frequency signal). Similarly, when the second end of the first coupler 341, the first end of the second coupler 342, and the second end of the second coupler 342 are respectively input with radio frequency signals, radio frequency signals with corresponding phases can be obtained. Similarly, when the phase difference between the through paths and the coupling paths of the four couplers 344 is other, the radio frequency signals with corresponding phase differences can be obtained.

In some possible embodiments, as shown in fig. 10, the controller 345 adjusts the phase differences between the through paths and the coupling paths of the first coupler 341, the second coupler 342, the third coupler 343, and the fourth coupler 344, and the phase shift angle of the first adjustable phase shifter 346.

In some possible embodiments, as shown in fig. 10, the controller 345 adjusts the phase differences between the through-paths and the coupling paths of the first coupler 341, the second coupler 342, the third coupler 343, and the fourth coupler 344, and the phase shift angle of the second adjustable phase shifter 347.

In some possible embodiments, as shown in fig. 10, the controller 345 adjusts the phase differences between the through paths and the coupling paths of the first coupler 341, the second coupler 342, the third coupler 343, and the fourth coupler 344 for the four couplers, as well as the phase shift angle of the first adjustable phase shifter 346 and the phase shift angle of the second adjustable phase shifter 347.

Illustratively, the phase shift angles of the first and second through-paths of the four couplers are-90 °, the phase shift angles of the first and second coupling paths of the four couplers are-180 °, and the phase shift angles of the first and second adjustable phase shifters 346, 347 are-45 °. The phase shift matrix circuit 34 at this time functions as the butler matrix 31, and when the radio frequency signal is input from the first end of the first coupler 341, the phase differences between the radio frequency signals output from the fifth port, the sixth port, the seventh port, and the eighth port of the phase shift matrix circuit 34 decrease in steps of-45 °. When the radio frequency signal is input from the second terminal of the first coupler 341, the phase differences between the radio frequency signals output from the fifth, sixth, seventh, and eighth ports of the phase shift matrix circuit 34 are increased in steps of 135 °. When the radio frequency signal is input from the first end of the second coupler 342, the phase differences between the radio frequency signals output from the fifth port, the sixth port, the seventh port, and the eighth port of the phase shift matrix circuit 34 are decreased in steps of-135 °. When the radio frequency signal is input from the second terminal of the second coupler 342, the phases between the radio frequency signals output from the fifth port, the sixth port, the seventh port, and the eighth port of the phase shift matrix circuit 34 are increased in 45 ° steps.

Illustratively, as shown in fig. 10, when the phase shift angle of the first and second through paths of the four couplers is-90 °, the phase shift angle of the first and second coupling paths of the four couplers is-135 °, and the phase shift angle of the first and second adjustable phase shifters 346 and 347 is-22.5 °. As shown in fig. 21, the phase simulation diagram of the four paths of rf signals output by the phase shift matrix circuit 34 is shown when the rf signals are input from the first end of the first coupler 341. It can be seen that the four radio frequency signals output from the fifth port to the eighth port at this time are shown to be sequentially decreased in steps of-22.5 °. As shown in fig. 22, the phase simulation of the four rf signals output by the phase-shift matrix circuit 34 is shown when the rf signals are input from the second end of the second coupler 342. It can be seen that the four radio frequency signals output from the fifth port to the eighth port are sequentially increased in steps of 22.5 degrees.

Illustratively, as shown in fig. 10, when the phase shift angle of the first and second through paths of the four couplers is-90 °, the phase shift angle of the first and second coupling paths of the four couplers is-135 °, and the phase shift angle of the first and second adjustable phase shifters 346 and 347 is-67.5 °. As shown in fig. 23, the phase simulation diagram of the four paths of rf signals output by the phase shift matrix circuit 34 is shown when the rf signals are input from the first end of the first coupler 341. It can be seen that the four radio frequency signals output from the fifth port to the eighth port at this time are shown to be sequentially decreased in steps of-22.5 °. As shown in fig. 24, the phase simulation of the four rf signals output by the phase-shift matrix circuit 34 is shown when the rf signals are input from the second end of the second coupler 342. It can be seen that the four radio frequency signals output from the fifth port to the eighth port are sequentially increased in steps of 22.5 degrees. As shown in fig. 25, the phase simulation diagram of the four-way rf signal output by the phase-shift matrix circuit 34 when the rf signal is input from the second end of the first coupler 341 is shown. It can be seen that the four radio frequency signals output from the fifth port to the eighth port are sequentially increased in steps of 157.5 ° (the phase value of the radio frequency signal output from the eighth port is a phase value increased by 360 °). As shown in fig. 26, the phase simulation of the four rf signals output by the phase-shift matrix circuit 34 is shown when the rf signals are input from the first end of the second coupler 342. It can be seen that the four radio frequency signals output from the fifth port to the eighth port at this time are shown as decreasing in steps of-157.5 ° (the phase values of the radio frequency signals output from the sixth port, the seventh port and the eighth port in the figure are phase values increased by 360 °).

In this embodiment, as shown in fig. 10, on the basis of the phase shift matrix circuit 34 formed by four couplers, the phase of the radio frequency signal output from the third end of the first coupler 341 to the first end of the third coupler 343 is shifted by the first adjustable phase shifter 346, so as to adjust the phases of the radio frequency signals output from the third end and the fourth end of the third coupler 343. At the same time, the first adjustable phase shifter 346 may also adjust the phase of the radio frequency signal output from the first end of the third coupler 343 to the third end of the first coupler 341. The rf signal output from the fourth end of the second coupler 342 to the second end of the fourth coupler 344 is phase-shifted by the second adjustable phase shifter 347 to adjust the phases of the rf signals output from the third and fourth ends of the fourth coupler 344. While the second adjustable phase shifter 347 may also adjust the phase of the rf signal output from the second end of the fourth coupler 344 to the fourth end of the second coupler 342. Thereby enabling the transmission of radio frequency signals with more different phase differences for beamforming.

In some possible embodiments, as shown in fig. 12, the controller 345 controls the first phase shifter 348 to phase shift the rf signal input or output at the fourth terminal of the third coupler 343.

In some possible embodiments, as shown in fig. 12, the controller 345 controls the second phase shifter 349 to phase shift the rf signal output or outputted at the fourth terminal of the fourth coupler 343.

In some possible embodiments, as shown in fig. 12, the controller 345 controls the first phase shifter 348 to phase shift the rf signal input or output at the fourth terminal of the third coupler 343, and controls the second phase shifter 349 to phase shift the rf signal output or output at the fourth terminal of the fourth coupler 343.

Illustratively, as shown in fig. 12, when the phase shift angles of the first and second through paths of the four couplers are-90 °, the phase shift angles of the first and second coupling paths of the four couplers are-135 °, the phase shift angles of the first and second adjustable phase shifters 346 and 347 are-22.5 °, and the phase shift angles of the first and second phase shifters 348 and 349 are-90 °. As shown in fig. 27, the phase simulation diagram of the four rf signals output by the phase shift matrix circuit 34 is shown when the rf signals are input from the first end of the first coupler 341. It can be seen that the four radio frequency signals output from the fifth port to the eighth port at this time appear to decrease in steps of-67.5 deg.. As shown in fig. 28, the phase simulation of the four rf signals output by the phase-shift matrix circuit 34 is shown when the rf signals are input from the second end of the second coupler 342. It can be seen that the four radio frequency signals output from the fifth port to the eighth port at this time appear to sequentially increase in steps of 67.5 °.

In some possible embodiments, as shown in fig. 12, the controller 345 also controls whether the third phase shifter 340 shifts phase.

Illustratively, as shown in fig. 12, when the phase shift angle of the first through path and the second through path of the four couplers is-90 °, the phase shift angle of the first through path and the second through path of the four couplers is-135 °, the phase shift angle of the first adjustable phase shifter 346 and the second adjustable phase shifter 347 is-22.5 °, the phase shift angle of the third phase shifter 340 is 180 °, and the third phase shifter 340 corresponding to the fifth port and the sixth port of the phase shift matrix circuit 34 performs the phase shift operation, and the third phase shifter 340 corresponding to the seventh port and the eighth port does not perform the phase shift operation. As shown in fig. 29, the phase simulation of the four rf signals output by the phase-shift matrix 34 is shown when the rf signals are input from the first end of the second coupler 342. It can be seen that the phases of the radio frequency signals transmitted by the fifth port to the eighth port of the phase shift matrix circuit 34 decrease in steps of-67.5 °.

Illustratively, as shown in fig. 12, when the first and second phase shifters 348 and 349 are not present, or the first and second phase shifters 348 and 349 are not operational. When the phase shift angle of the first through path and the second through path of the four couplers is-90 °, the phase shift angle of the first through path and the second through path of the four couplers is-135 °, the phase shift angle of the first adjustable phase shifter 346 and the second adjustable phase shifter 347 is-22.5 °, the phase shift angle of the third phase shifter 340 is 180 °, and the third phase shifter 340 of the seventh port and the eighth port of the phase shift matrix circuit 34 performs phase shift operation, and the third phase shifter 340 corresponding to the fifth port and the sixth port does not perform operation. As shown in fig. 30, a schematic diagram of phase simulation of the four rf signals output by the phase shift matrix circuit 34 when the rf signals are input from the second end of the first coupler 341. It can be seen that the phases of the radio frequency signals transmitted from the fifth port to the eighth port of the phase shift matrix circuit 34 are sequentially increased in steps of 67.5 °.

Illustratively, as shown in fig. 12, when the phase shift angle of the first through path and the second through path of the four couplers is-90 °, the phase shift angle of the first through path and the second through path of the four couplers is-135 °, the phase shift angle of the first adjustable phase shifter 346 and the second adjustable phase shifter 347 is-22.5 °, the phase shift angle of the first phase shifter 348 and the second phase shifter 349 is-90 °, the phase shift angle of the third phase shifter 340 is 180 °, and the third phase shifter 340 of the fifth port and the sixth port of the phase shift matrix circuit 34 performs the phase shift operation, and the third phase shifter 340 corresponding to the seventh port and the eighth port does not perform the phase shift operation. As shown in fig. 31, the phase simulation of the four rf signals output by the phase-shift matrix 34 is shown when the rf signals are input from the first end of the second coupler 342. It can be seen that the phases of the radio frequency signals transmitted from the fifth port to the eighth port of the phase shift matrix circuit 34 are sequentially decreased in steps of-112.5 °.

Illustratively, as shown in fig. 12, when the phase shift angle of the first through path and the second through path of the four couplers is-90 °, the phase shift angle of the first through path and the second through path of the four couplers is-135 °, the phase shift angle of the first adjustable phase shifter 346 and the second adjustable phase shifter 347 is-22.5 °, the phase shift angle of the first phase shifter 348 and the second phase shifter 349 is-90 °, the phase shift angle of the third phase shifter 340 is 180 °, and the third phase shifters 340 of the fifth port and the sixth port of the phase shift matrix circuit 34 perform phase shift operation, and the third phase shifters corresponding to the seventh port and the eighth port do not perform phase shift operation. As shown in fig. 32, the phase simulation of the four rf signals output by the phase-shift matrix 34 is shown when the rf signals are input from the second end of the first coupler 342. It can be seen that the phases of the radio frequency signals transmitted from the fifth port to the eighth port of the phase shift matrix circuit 34 are sequentially increased in steps of 112.5 °.

In step S102, the phase shift matrix circuit 34 inputs the rf signals, and transmits multiple rf signals with different phases.

As shown in fig. 14 and 15, according to an actual application scenario, the up-conversion module 21 of the frequency conversion unit 2 outputs radio frequency signals to the phase shift matrix circuit 34 through the single-channel signal interface circuit 331 or the multiple-input multiple-output interface circuit 332, the phase shift matrix circuit 34 shifts the phases of the radio frequency signals input into the phase shift matrix circuit 34, obtains a plurality of phase-shifted radio frequency signals and outputs the plurality of phase-shifted radio frequency signals to the corresponding radio frequency front ends 32, and the transmitting front ends 321 of the radio frequency front ends 32 output a plurality of phase-shifted radio frequency signals to realize beamforming.

As shown in fig. 14 and 15, the receiving front end 322 of the rf front end 32 inputs the rf signal and outputs the rf signal to the phase-shifting matrix circuit 34, and the phase-shifting matrix circuit 34 shifts the rf signal input to the phase-shifting matrix circuit 34 and outputs the phase-shifted rf signal to the down-conversion module 22 of the frequency conversion unit 2 through the single-channel signal interface circuit 331 or the multiple-input multiple-output interface circuit 332.

The above embodiment is an example in which the phase shift angles of the first coupler 341, the second coupler 342, the third coupler 343, the fourth coupler 344, the first adjustable phase shifter 346, the second adjustable phase shifter 347, the first phase shifter 348 and the second phase shifter 349 are all negative angles in the process of outputting the radio frequency signal to the radio frequency front end 32 by the phase shift matrix circuit 34, and in the same manner, these devices may be set to be phase-shifted by positive angles in practical applications.

The embodiments of the present application implement transmitting radio frequency signals with more different phase differences on the basis of a simple phase-shift matrix structure by the transceiver device including the structures as shown in fig. 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 and 15, so as to implement beamforming of the radio frequency signals. The phase shift matrix circuit provided by the embodiment of the application can be coupled to a multi-input multi-output radio frequency interface and also can be coupled to a single-channel input and output radio frequency interface, and compared with a traditional multi-input multi-output phase shift matrix or a wave beam forming circuit, the phase shift matrix circuit is simpler in structure while guaranteeing a single-channel input and output function and a multi-channel radio frequency signal input and output function.

As shown in fig. 33, the embodiment of the present application further provides a chip system 6. The chip system 6 comprises at least one processor 61 and at least one interface circuit 62. The at least one processor 61 and the at least one interface circuit 62 may be interconnected by wires. The processor 61 is configured to support the chip system 6 to implement the functions or steps of the method embodiments described above, for example, to perform the method shown in fig. 16. At least one interface circuit 62 may be used to receive signals from other devices (e.g., memory) or to send signals to other devices (e.g., communication interfaces). The system-on-chip may include a chip, and may also include other discrete devices.

Embodiments of the present application also provide a computer-readable storage medium including instructions that, when executed on the above-described chip system or transceiver device, cause the chip system or transceiver device to perform the functions or steps of the above-described method embodiments, such as performing the method shown in fig. 16.

Embodiments of the present application also provide a computer program product comprising instructions which, when run on the above-described chip system or transceiver device, cause the chip system or transceiver device to perform the functions or steps of the above-described method embodiments, such as performing the method shown in fig. 16.

Technical effects concerning the chip system, the computer-readable storage medium, the computer program product refer to the technical effects of the previous method embodiments.

The processor referred to in the embodiments of the present application may be a chip. For example, it may be a field programmable gate array (field programmable gate array, FPGA), an application specific integrated chip (application specific integrated circuit, ASIC), a system on chip (SoC), a central processing unit (central processor unit, CPU), a network processor (network processor, NP), a digital signal processing circuit (digital signal processor, DSP), a microcontroller (micro controller unit, MCU), a programmable controller (programmable logic device, PLD) or other integrated chip.

The memory to which embodiments of the present application relate may be volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically Erasable EPROM (EEPROM), or a flash memory. The volatile memory may be random access memory (random access memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and direct memory bus RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.

Those of ordinary skill in the art will appreciate that the various illustrative modules and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clearly understood by those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described system, apparatus and module may refer to corresponding procedures in the foregoing method embodiments, which are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, e.g., the division of the modules is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple modules or components may be combined or integrated into another device, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interface, indirect coupling or communication connection of devices or modules, electrical, mechanical, or other form.

The modules described as separate components may or may not be physically separate, and components shown as modules may or may not be physically separate, i.e., may be located in one device, or may be distributed over multiple devices. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional module in each embodiment of the present application may be integrated in one device, or each module may exist alone physically, or two or more modules may be integrated in one device.

In the above embodiments, it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented using a software program, it may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present application are produced in whole or in part. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. The computer instructions may be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by a wired (e.g., coaxial cable, fiber optic, digital subscriber line (digital subscriber line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.). The computer readable storage medium may be any available medium that can be accessed by a computer or a data storage device including one or more servers, data centers, etc. that can be integrated with the medium. The usable medium may be a magnetic medium (e.g., a floppy disk, a hard disk, a magnetic tape), an optical medium (e.g., a DVD), or a semiconductor medium (e.g., a Solid State Disk (SSD)), or the like.

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

Claims

1. The phase shift matrix circuit is characterized by comprising a controller, a first coupler, a second coupler, a third coupler and a fourth coupler; a third end of the first coupler is coupled to a first end of the third coupler; a fourth end of the first coupler is coupled to a first end of the fourth coupler; a third end of the second coupler is coupled to a second end of the third coupler; a fourth end of the second coupler is coupled to a second end of the fourth coupler; the controller is respectively coupled with the first coupler, the second coupler, the third coupler and the fourth coupler;

for each of the first, second, third, and fourth couplers: a first through passage is arranged between the first end and the third end, a first coupling passage is arranged between the first end and the fourth end, a second through passage is arranged between the second end and the fourth end, and a second coupling passage is arranged between the second end and the third end;

The controller is configured to control a phase difference between the first through path and the first coupling path of each coupler and/or to control a phase difference between the second through path and the second coupling path.

2. The circuit of claim 1, further comprising a first adjustable phase shifter; the third end of the first coupler is coupled with the first end of the third coupler through the first adjustable phase shifter;

the first adjustable phase shifter is used for shifting the phase of the radio frequency signal transmitted between the third end of the first coupler and the first end of the third coupler;

the controller is also coupled to the first adjustable phase shifter for controlling a phase shift angle of the first adjustable phase shifter.

3. The circuit of claim 2, wherein the phase shift angles of the first adjustable phase shifter are ± 22.5 °, ± 45 ° and ± 67.5 °.

4. A circuit according to any one of claims 1-3, further comprising a second adjustable phase shifter; the fourth end of the second coupler is coupled with the second end of the fourth coupler through the second adjustable phase shifter;

the second adjustable phase shifter is used for shifting the phase of the radio frequency signal transmitted between the fourth end of the second coupler and the second end of the fourth coupler;

The controller is also coupled to the second adjustable phase shifter for controlling a phase shift angle of the second adjustable phase shifter.

5. The circuit of claim 4, wherein the phase shift angles of the second adjustable phase shifter are ± 22.5 °, ± 45 ° and ± 67.5 °.

6. The circuit of any of claims 1-5, further comprising a first phase shifter; the first phase shifter is coupled to the fourth end of the third coupler and the controller;

the first phase shifter is used for shifting the phase of the radio frequency signal input or output to the fourth end of the third coupler;

the controller is used for controlling whether the first phase shifter shifts the phase or not.

7. The circuit of claim 6, wherein the phase shift angle of the first phase shifter is ± 90 °.

8. The circuit of any of claims 1-7, further comprising a second phase shifter; the second phase shifter is coupled to the fourth end of the fourth coupler and the controller;

the second phase shifter is used for shifting the phase of the radio frequency signal input or output to the fourth end of the fourth coupler;

the controller is used for controlling whether the second phase shifter shifts the phase or not.

9. The circuit of claim 8, wherein the phase shift angle of the second phase shifter is ± 90 °.

10. The circuit of any one of claims 1-9, further comprising a third phase shifter; the third end of the third coupler, the fourth end of the third coupler, the third end of the fourth coupler and the fourth end of the fourth coupler are respectively coupled with one third phase shifter correspondingly, and radio frequency signals are input or input through the coupled third phase shifters; the third phase shifter is further coupled to the controller;

the third phase shifter is used for shifting the phase of the radio frequency signals input or output by the third end of the third coupler, the fourth end of the third coupler, the third end of the fourth coupler and the fourth end of the fourth coupler;

the controller is used for controlling whether the third phase shifter shifts the phase.

11. The circuit of claim 10, wherein the phase shift angles of the four third phase shifters are ±180°.

12. The circuit of any of claims 1-11, wherein the first coupler, the second coupler, the third coupler, and the fourth coupler are inductive tunable couplers; the inductance type adjustable coupler comprises a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a first inductor and a second inductor;

A first end of the first inductor is coupled to the first capacitor which is grounded, and the first end of the first inductor is used as a first end of the inductance type adjustable coupler; a second end of the first inductor is coupled with the third capacitor which is grounded, and the second end of the first inductor is used as a third end of the inductance type adjustable coupler; a first end of the second inductor is coupled to the second capacitor which is grounded, and the first end of the second inductor is used as a second end of the inductance type adjustable coupler; a second end of the second inductor is coupled to the fourth capacitor which is grounded, and the second end of the second inductor is used as a fourth end of the inductance type adjustable coupler; a first end of the fifth capacitor is coupled to a coupling point of the first inductor and the first capacitor, and a second end of the fifth capacitor is coupled to a coupling point of the second inductor and the second capacitor; a first end of the sixth capacitor is coupled to a coupling point of the first inductor and the third capacitor, and a second end of the sixth capacitor is coupled to a coupling point of the second inductor and the fourth capacitor;

the controller is coupled with the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor and the sixth capacitor respectively, and is used for controlling capacitance values of the first capacitor, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor and the sixth capacitor so as to control a phase difference between the first through passage and the first coupling passage of the inductance type adjustable coupler or to control a phase difference between the second through passage and the second coupling passage of the inductance type adjustable coupler.

13. A beamforming circuit comprising an interface circuit, a phase shift matrix circuit according to any one of claims 1-12, a plurality of radio frequency front ends; the phase shift matrix circuit comprises a first coupler, a second coupler, a third coupler and a fourth coupler; the first end of the interface circuit is respectively coupled to the first end of the first coupler, the second end of the first coupler, the first end of the second coupler and the second end of the second coupler; a second end of the interface circuit is coupled to the frequency conversion unit; the plurality of radio frequency front ends are respectively and correspondingly coupled to a third end of the third coupler, a fourth end of the third coupler, a third end of the fourth coupler and a fourth end of the fourth coupler;

the interface circuit is used for receiving the radio frequency signals output by the frequency conversion unit and outputting the radio frequency signals to the plurality of radio frequency front ends through the phase-shift matrix circuit, or inputting the radio frequency signals output by the plurality of radio frequency front ends through the phase-shift matrix circuit; the plurality of radio frequency front ends are used for receiving radio frequency signals sent by the transceiver and outputting the radio frequency signals to the interface circuit through the phase-shifting matrix circuit, or inputting the radio frequency signals output by the interface circuit through the phase-shifting matrix circuit and sending the radio frequency signals to the transceiver; the phase-shifting matrix circuit is used for shifting the phase of the radio frequency signals input into the phase-shifting matrix circuit and outputting the radio frequency signals to the interface circuit or the plurality of radio frequency front ends.

14. The circuit of claim 13, wherein the interface circuit comprises a single-way signal interface circuit; the single-way signal interface circuit comprises a first switch and a single-pole four-throw switch; the first end of the first switch is coupled to the frequency conversion unit and is used for inputting the single-path radio frequency signal output by the frequency conversion unit or outputting the radio frequency signal to the frequency conversion unit; the second end of the first switch is coupled with the first end of the single pole four throw switch and is correspondingly coupled to the first end of the first coupler, the second end of the first coupler, the first end of the second coupler and the second end of the second coupler through four second ends of the single pole four throw switch.

15. The circuit of claim 13 or 14, wherein the interface circuit further comprises a multiple-input multiple-output interface circuit; the multi-input multi-output interface circuit comprises a second switch, a third switch, a fourth switch and a fifth switch which are respectively coupled with the frequency conversion unit; the second switch is also coupled to a first end of the first coupler; the third switch is further coupled to a second end of the first coupler; the fourth switch is coupled to the first end of the second coupler; the fifth switch is coupled to the second end of the second coupler; the second switch, the third switch, the fourth switch and the fifth switch are respectively used for receiving one path of radio frequency signals in the multiple paths of radio frequency signals output by the frequency conversion unit, or outputting radio frequency signals to the frequency conversion unit.

16. A phase shifting method, characterized in that it is based on a phase shifting matrix circuit; the phase shift matrix circuit comprises a first coupler, a second coupler, a third coupler and a fourth coupler; a first end of the first coupler is coupled to a first end of the third coupler; the second end of the first coupler is coupled with the first end of the fourth coupler; a third end of the second coupler is coupled to a second end of the third coupler; a fourth end of the second coupler is coupled to a second end of the fourth coupler; the controller is respectively coupled with the first coupler, the second coupler, the third coupler and the fourth coupler; for each of the first, second, third, and fourth couplers: a first through passage is arranged between the first end and the third end, a first coupling passage is arranged between the first end and the fourth end, a second through passage is arranged between the second end and the fourth end, and a second coupling passage is arranged between the second end and the third end; the method comprises the following steps:

a phase difference between the first pass-through path and the first coupling path of each coupler is controlled, or a phase difference between the second pass-through path and the second coupling path is controlled.

17. The method of claim 16, wherein the phase shift matrix circuit further comprises a first adjustable phase shifter; the third end of the first coupler is coupled with the first end of the third coupler through the first adjustable phase shifter; the first adjustable phase shifter is used for shifting the phase of the radio frequency signal transmitted between the third end of the first coupler and the first end of the third coupler; the method further comprises the steps of:

and controlling the phase shift angle of the first adjustable phase shifter.

18. The method of claim 16 or 17, wherein the phase shift matrix circuit further comprises a second adjustable phase shifter; the fourth end of the second coupler is coupled with the second end of the fourth coupler through the second adjustable phase shifter; the second adjustable phase shifter is used for shifting the phase of the radio frequency signal transmitted between the fourth end of the second coupler and the second end of the fourth coupler; the method further comprises the steps of:

and controlling the phase shift angle of the second adjustable phase shifter.

19. The method of any of claims 16-18, wherein the phase shift matrix circuit further comprises a first phase shifter; the first phase shifter is coupled to the fourth end of the third coupler and the controller; the first phase shifter is used for shifting the phase of the radio frequency signal input or output to the fourth end of the third coupler; the method further comprises the steps of:

And controlling whether the first phase shifter shifts the phase or not.

20. The method of any of claims 16-19, wherein the phase shift matrix circuit further comprises a second phase shifter; the second phase shifter is coupled to the fourth end of the fourth coupler and the controller; the second phase shifter is used for shifting the phase of the radio frequency signal input or output to the fourth end of the fourth coupler; the method further comprises the steps of:

and controlling whether the second phase shifter shifts the phase or not.

21. The method of any of claims 16-20, wherein the phase shift matrix circuit further comprises a third phase shifter; the third end of the third coupler, the fourth end of the third coupler, the third end of the fourth coupler and the fourth end of the fourth coupler are respectively coupled with one third phase shifter correspondingly, and radio frequency signals are input or input through the coupled third phase shifters; the third phase shifter is further coupled to the controller; the third phase shifter is used for shifting the phase of the radio frequency signals input or output by the third end of the third coupler, the fourth end of the third coupler, the third end of the fourth coupler and the fourth end of the fourth coupler; the method further comprises the steps of:

And controlling whether the third phase shifter shifts the phase or not.

22. The method of any one of claims 16-21, wherein the first coupler, the second coupler, the third coupler, and the fourth coupler are inductive tunable couplers; the inductance type adjustable coupler comprises a first capacitor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor, a first inductor and a second inductor; a first end of the first inductor is coupled to the first capacitor which is grounded, and the first end of the first inductor is used as a first end of the inductance type adjustable coupler; a second end of the first inductor is coupled with the third capacitor which is grounded, and the second end of the first inductor is used as a third end of the inductance type adjustable coupler; a first end of the second inductor is coupled to the second capacitor which is grounded, and the first end of the second inductor is used as a second end of the inductance type adjustable coupler; a second end of the second inductor is coupled to the fourth capacitor which is grounded, and the second end of the second inductor is used as a fourth end of the inductance type adjustable coupler; a first end of the fifth capacitor is coupled to a coupling point of the first inductor and the first capacitor, and a second end of the fifth capacitor is coupled to a coupling point of the second inductor and the second capacitor; a first end of the sixth capacitor is coupled to a coupling point of the first inductor and the third capacitor, and a second end of the sixth capacitor is coupled to a coupling point of the second inductor and the fourth capacitor; the method specifically comprises the following steps:

The capacitance values of the first capacitance, the second capacitance, the third capacitance, the fourth capacitance, the fifth capacitance, and the sixth capacitance are controlled to control a phase difference between the first through path and the first coupling path of the inductive tunable coupler, or to control a phase difference between the second through path and the second coupling path of the inductive tunable coupler.

23. A transceiver device comprising a frequency conversion unit, a beamforming circuit according to any one of claims 13-15; the beam forming circuit is used for inputting one or more paths of radio frequency signals generated by the frequency conversion unit and transmitting the input radio frequency signals to another transceiver device in different phases; or the wave beam forming circuit is used for receiving radio frequency signals with different phases sent by another receiving and transmitting device, shifting the received radio frequency signals into the same phase and then outputting the same to the frequency conversion unit.

24. A signal transmission system comprising at least two transceiver devices according to claim 23; and the receiving and transmitting equipment transmits and receives radio frequency signals with different phases.

25. A computer readable storage medium comprising instructions which, when run on a transceiving device according to claim 23, cause said transceiving device to perform the method according to any of claims 16-22.