Signal transmission device and transmission method

Abstract

The present disclosure provides a signal transmission device and a transmission method, wherein the signal transmission device includes: a power divider and a coupling device; the first port of the power divider is connected to the signal source, and the power divider is used to divide the signal input from the signal source into a first source signal and a second source signal, and output through the second port and the third port; the input port of the coupling device is connected to the second port, and the fifth port of the coupling device is connected to the third port; the fourth port of the coupling device is connected to the antenna; the sixth port of the coupling device is connected to an external device; the coupling device is used to couple or split the signal, and the coupling or splitting includes: coupling the first source signal and the second source signal, and splitting the reverse signal input through the sixth port or the fourth port into two signals. The device and method disclosed in the present disclosure can reduce the reverse insertion loss, reduce the uplink noise coefficient of the indoor distributed system, and can improve the uplink performance of the passive indoor distributed system.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a signal transmission device and a transmission method. Background Art

[0002] In passive indoor distributed systems for mobile communications and other RF transmission systems, couplers are commonly used to couple and transmit signals. However, in passive indoor distributed systems, the majority of the signal input from the coupling port of conventional couplers is transmitted to the isolation port, where it is absorbed by the matched load. This results in high uplink insertion loss, a high noise figure for the indoor distributed system, and poor uplink performance. Summary of the Invention

[0003] In view of this, a technical problem to be solved by the present invention is to provide a signal transmission device and a transmission method.

[0004] According to a first aspect of the present disclosure, a signal transmission device is provided, comprising: a power divider and a coupling device; the first port of the power divider is connected to a signal source, and the power divider is used to divide the signal input by the signal source into a first source signal and a second source signal, and output them through the second port and the third port respectively; the input port of the coupling device is connected to the second port, and the fifth port of the coupling device is connected to the third port; the fourth port of the coupling device is connected to an antenna; the sixth port of the coupling device is connected to an external device; the coupling device is used to couple or branch the signal; wherein the coupling or branching processing includes: coupling the first source signal and the second source signal, and dividing the reverse signal input through the sixth port or the fourth port into two signals.

[0005] Optionally, the first source signal is input into the coupling device through the second port and the input port, the coupling device outputs the first source signal to the fourth port, and the phase shift of the first source signal when it reaches the fourth port is a first phase shift; the second source signal is input into the coupling device through the third port and the fifth port, the coupling device outputs the second source signal to the fourth port, and the phase shift of the second source signal when it reaches the fourth port is a second phase shift; wherein the first phase shift and the second phase shift are the same; after the coupling device couples the first source signal and the second source signal, it outputs the coupled signal from the fourth port.

[0006] Optionally, the first source signal is input into the coupling device through the second port and the input port, the coupling device outputs the first source signal to the sixth port, and the phase shift of the first source signal reaching the sixth port is a third phase shift; the second source signal is input into the coupling device through the third port and the fifth port, the coupling device outputs the second source signal to the sixth port, and the phase shift of the second source signal reaching the sixth port is a fourth phase shift; wherein, the third phase shift is 0.5 times the first phase shift, and the third phase shift is 1.5 times the first phase shift; after the coupling device couples the first source signal and the second source signal, it outputs the coupled signal from the sixth port.

[0007] Optionally, a first reverse signal is input into the coupling device from the sixth port, and the coupling device divides the first reverse signal into a first reverse branch signal and a second reverse branch signal; the coupling device outputs the first reverse branch signal and the second reverse branch signal to the third port and the second port through the fifth port and the input port respectively; wherein, the fifth phase shift of the first reverse branch signal when it reaches the second port is 0.5 times the first phase shift, and the sixth phase shift of the second reverse branch signal when it reaches the third port is 1.5 times the first phase shift.

[0008] Optionally, a second reverse signal is input into the coupling device from the fourth port, and the coupling device divides the second reverse signal into a third reverse branch signal and a fourth reverse branch signal; the coupling device outputs the third reverse branch signal and the fourth reverse branch signal to the third port and the second port through the fifth port and the input port respectively; wherein, the fifth phase shift of the first reverse branch signal when it reaches the second port is the first phase shift, and the sixth phase shift of the second reverse branch signal when it reaches the third port is the first phase shift.

[0009] Optionally, the coupling device includes a bridge device or a coupler; the power divider includes: a proportional power divider.

[0010] According to a second aspect of the present disclosure, a signal transmission method is provided, which is applied to a signal transmission device, wherein the signal transmission device includes: a power divider and a coupling device; the first port of the power divider is connected to a signal source, the input port of the coupling device is connected to the second port of the power divider, the fifth port of the coupling device is connected to the third port of the power divider, the fourth port of the coupling device is connected to an antenna, and the sixth port of the coupling device is connected to an external device; the method includes: the power divider divides the signal input by the signal source into a first source signal and a second source signal, and outputs them through the second port and the third port respectively; the coupling device couples or branches the signal; wherein the coupling or branching includes: coupling the first source signal and the second source signal, and dividing the reverse signal input through the sixth port or the fourth port into two signals.

[0011] Optionally, the first source signal is input into the coupling device through the second port and the input port, and the second source signal is input into the coupling device through the third port and the fifth port; the coupling device couples or branches the signal, including: the coupling device outputs the first source signal to the fourth port, and the phase shift of the first source signal when it reaches the fourth port is a first phase shift; the coupling device outputs the second source signal to the fourth port, and the phase shift of the second source signal when it reaches the fourth port is a second phase shift; wherein the first phase shift and the second phase shift are the same; after the coupling device couples the first source signal and the second source signal, it outputs the coupled signal from the fourth port.

[0012] Optionally, the first source signal is input into the coupling device through the second port and the input port, and the second source signal is input into the coupling device through the third port and the fifth port; the coupling device couples or branches the signal, including: the coupling device outputs the first source signal to the sixth port, and the phase shift of the first source signal reaching the sixth port is a third phase shift; the coupling device outputs the second source signal to the sixth port, and the phase shift of the second source signal reaching the sixth port is a fourth phase shift; wherein, the third phase shift is 0.5 times the first phase shift, and the third phase shift is 1.5 times the first phase shift; after the coupling device couples the first source signal and the second source signal, it outputs the coupled signal from the sixth port.

[0013] Optionally, a first reverse signal is input into the coupling device from the sixth port; the coupling device couples or branches the signal, including: the coupling device divides the first reverse signal into a first reverse branch signal and a second reverse branch signal; the coupling device outputs the first reverse branch signal and the second reverse branch signal to the third port and the second port through the fifth port and the input port respectively; wherein, the fifth phase shift of the first reverse branch signal when arriving at the second port is 0.5 times the first phase shift, and the sixth phase shift of the second reverse branch signal when arriving at the third port is 1.5 times the first phase shift.

[0014] Optionally, the second reverse signal is input into the coupling device from the fourth port; the coupling device couples or branches the signal, including: the coupling device divides the second reverse signal into a third reverse branch signal and a fourth reverse branch signal; the coupling device outputs the third reverse branch signal and the fourth reverse branch signal to the third port and the second port through the fifth port and the input port respectively; wherein, the fifth phase shift of the first reverse branch signal when it reaches the second port is the first phase shift, and the sixth phase shift of the second reverse branch signal when it reaches the third port is the first phase shift.

[0015] Optionally, the coupling device includes a bridge device or a coupler; the power divider includes: a proportional power divider.

[0016] The signal transmission device and transmission method disclosed in the present invention can reduce reverse insertion loss, reduce the uplink noise coefficient of the indoor distributed system, and improve the uplink performance of the passive indoor distributed system. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0018] Figure 1 A schematic diagram of a module according to an embodiment of a signal transmission device of the present disclosure;

[0019] Figure 2A and 2B is a schematic diagram of a power divider; Figures 2C to 2E is a schematic diagram of the coupling device;

[0020] Figure 3A A schematic diagram of forward signal transmission according to an embodiment of a signal transmission device of the present disclosure;

[0021] Figure 3B A schematic diagram of reverse signal transmission according to an embodiment of a signal transmission device of the present disclosure;

[0022] Figure 4 A schematic diagram of reverse signal transmission according to another embodiment of the signal transmission device of the present disclosure;

[0023] Figure 5 The figure is a flow chart of an embodiment of a signal transmission method according to the present disclosure. DETAILED DESCRIPTION

[0024] The present disclosure is described more fully below with reference to the accompanying drawings, which illustrate exemplary embodiments of the present disclosure. The technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present disclosure.

[0025] The terms "first", "second", etc. in the following text are only used to distinguish between the two and have no other special meanings.

[0026] In one embodiment, Figure 1 As shown, the present disclosure provides a signal transmission device including a power divider 01 and a coupling device 02. Coupling device 02 may be a bridge device or a coupler, and power divider 01 may be a proportional power divider, etc. Coupling device 02 includes four ports, namely a fourth port 14, a fifth port 15, and a sixth port 16, and an input port 17. Coupling device 02 may be an existing bridge device or coupler.

[0027] The power splitter 01 is also called a power distributor, which is used to realize proportional distribution and synthesis of power. It includes a first port 11, a second port 12 and a third port 13. The first port 11 receives one channel of input signal energy, such as the signal sent by the 5G RU. The power splitter 01 divides the received signal energy into two channels of signal energy. The second port 12 and the third port 13 are used to output the two channels of signal energy respectively. The power splitter 01 is a one-to-two proportional power splitter. The power splitter 01 can be any of the existing power splitters. For example, in actual applications, the main structural diagram of the power splitter actually used is as follows: Figure 2A As shown, the cross-sectional side view of the power divider actually used is shown in Figure 2B shown.

[0028] First port 11 of power divider 01 is connected to a signal source. Power divider 01 is configured to split the signal input from the signal source into a first source signal and a second source signal, outputting the signals through second port 12 and third port 13, respectively. Input port 17 of coupling device 02 is connected to second port 12, and fifth port 15 of coupling device 02 is connected to third port 13.

[0029] The fourth port 14 of the coupling device 02 is connected to the antenna, and the signal input by the antenna can be a mobile phone signal, etc. The sixth port 16 of the coupling device 02 is connected to an external device, and the external device can include a coupling device of the next level, etc. The coupling device 02 is used to couple or branch the signal, and the coupling or branching processing includes coupling the first source signal and the second source signal, and dividing the reverse signal input through the sixth port 16 or the fourth port 14 into two signals. The coupling device 02 can use a variety of bridge circuits or couplers to achieve multiple functions such as coupling or branching the signal to complete the signal transmission function of the present disclosure. For example, in actual applications, the back figure of the bridge circuit actually used is as shown Figure 2C As shown, the front diagram of the actual bridge circuit is as follows Figure 2D As shown, the double-sided diagram of the actual bridge circuit is as follows Figure 2E shown.

[0030] The signal transmission device of the above embodiment synthesizes the coupling port signal and the output port reverse signal and transmits them to the input port, which can reduce the reverse insertion loss, reduce the uplink noise coefficient of the indoor distributed system, and improve the uplink performance of the passive indoor distributed system.

[0031] In one embodiment, a first source signal is input into coupling device 02 via second port 12 and input port 17. Coupling device 02 outputs the first source signal to fourth port 14. The first source signal has a first phase shift upon reaching fourth port 14. A second source signal is input into coupling device 02 via third port 13 and fifth port 15. Coupling device 02 outputs the second source signal to fourth port 14. The second source signal has a second phase shift upon reaching fourth port 14. The first and second phase shifts are identical. Coupling device 02 couples the first and second source signals and then outputs the coupled signal from fourth port 14.

[0032] The first source signal is input into coupling device 02 via second port 12 and input port 17. Coupling device 02 outputs the first source signal to sixth port 16. The phase shift of the first source signal upon reaching sixth port 16 is the third phase shift. The second source signal is input into coupling device 02 via third port 13 and fifth port 15. Coupling device 02 outputs the second source signal to sixth port 16. The phase shift of the second source signal upon reaching sixth port 16 is the fourth phase shift. The third phase shift is 0.5 times the first phase shift, and the third phase shift is 1.5 times the first phase shift. After coupling the first and second source signals, coupling device 02 outputs the coupled signal from sixth port 16.

[0033] In one embodiment, the coupling degree between the input port (first port 11) and the coupled port (fourth port 14) can be designed according to specific requirements, such as 3dB, 5dB, 6dB, 7dB, 10dB, etc., and the insertion loss from the input port to the output port (sixth port 16) and other indicators are less than 1.5dB. The phase shift from the second port 14 to the sixth port 16, and the phase shift from the fourth port 14 to the fifth port 15 are 1 / 2λ, where the phase shift is the phase difference between the output signal wave and the input signal wave. The phase shift from the second port 12 to the fourth port 14, and the phase shift from the sixth port 16 to the fifth port 15 are λ, and the phase shift from the third port 13 to the fifth port 15 is 1 / 2λ.

[0034] There is no transmission line between power splitter 01 and input port 17 of the coupling device (direct connection). The transmission loss between first port 11 and fourth port 14 is 3dB, the transmission loss between fourth port 14 and first port 11 is less than or equal to 1.5dB, and the transmission loss between sixth port 16 and first port 11 is less than or equal to 1.5dB. Taking a 3dB coupler (power splitter) as an example, the forward insertion loss (dB) is ≤3.5, and the standing wave is ≤1.5; the reverse coupling port insertion loss (dB) is ≤1.5, and the standing wave is ≤1.5; the reverse output port insertion loss (dB) is ≤1.5, and the standing wave is ≤1.5.

[0035] In one embodiment, a first reverse signal is input into the coupling device 02 from the sixth port 16. The coupling device 02 splits the first reverse signal into a first reverse branch signal and a second reverse branch signal. The coupling device 02 outputs the first reverse branch signal and the second reverse branch signal to the third port 13 and the second port through the fifth port 15 and the input port 17, respectively. The fifth phase shift of the first reverse branch signal when it reaches the second port 12 is 0.5 times the first phase shift, and the sixth phase shift of the second reverse branch signal when it reaches the third port 13 is 1.5 times the first phase shift.

[0036] The second reverse signal is input into the coupling device 02 from the fourth port 14. The coupling device 02 splits the second reverse signal into a third reverse branch signal and a fourth reverse branch signal. The coupling device 02 outputs the third reverse branch signal and the fourth reverse branch signal to the third port 13 and the second port 12 through the fifth port 15 and the input port 17, respectively. The fifth phase shift of the first reverse branch signal when it reaches the second port 12 is the first phase shift, and the sixth phase shift of the second reverse branch signal when it reaches the third port 13 is the first phase shift.

[0037] In one embodiment, the forward working principle of the signal transmission device is as follows: Figure 3A As shown, the forward signal is input into the first port 11 of the power divider 01, then split into two signals by the power divider 01, reaching the second port 12 and the third port 13 of the bridge or coupler. The phase shift from the second port 12 to the fourth port 14 is λ, and the phase shift from the third port 13 to the fourth port 14 is also λ, meaning that the phases are the same. After being combined by the bridge or coupler, they are output from the fourth port 14. Under the condition that the power divider and the bridge or coupler are performing equal power division, the insertion loss is 3dB.

[0038] The phase shift of the signal from the second port 12 to the sixth port 16 is 1 / 2λ, and the phase shift of the signal from the third port 13 to the sixth port 16 is 3 / 2λ, that is, the arriving phases are the same. After being synthesized by the bridge or coupler, they are output from the sixth port 16. Under the condition that the power divider and the bridge or coupler have equal power division, the insertion loss is 3dB.

[0039] In one embodiment, the reverse working principle of the signal transmission device is as follows Figure 3B As shown (from output to input), the reverse signal is input from the sixth port 16 and split into two signals, which then arrive at the second port 12 and the third port 13 respectively via a bridge or coupler. The phase shift of the signal from the sixth port 16 to the second port 12 is 1 / 2λ, and the phase shift of the signal from the sixth port 16 to the third port 13 is 3 / 2λ. The two ports of the power divider are in phase and are reversely combined by the power divider and output to the first port 11. The insertion loss is no more than 1.5dB.

[0040] The reverse working principle of the signal transmission device is as follows Figure 4 As shown (coupling port to input port), the reverse signal is input through the fourth port 14, split into two paths, and respectively reaches the second port 12 and the third port 13 through a bridge or coupler. The phase shift of the signal from the fourth port 14 to the second port 12 is λ, and the phase shift of the signal from the fourth port 14 to the third port 13 is also λ, which are in phase. The two signals are reversely combined and output to the first port 11 through the power divider, and the insertion loss is no more than 1.5dB.

[0041] Figure 5FIG. 1 is a flow chart of an embodiment of a signal transmission method according to the present disclosure, wherein the signal transmission method is applied to a signal transmission device, such as Figure 5 As shown:

[0042] In step 501 , a power divider divides a signal input from a signal source into a first source signal and a second source signal, and outputs the signals through a second port and a third port respectively.

[0043] In step 502, the coupling device couples or splits the signal. The coupling or splitting includes coupling the first source signal and the second source signal, and splitting the reverse signal input through the sixth port or the fourth port into two signals.

[0044] In one embodiment, a first source signal is input into the coupling device through the second port and the input port, and a second source signal is input into the coupling device through the third port and the fifth port. The coupling device outputs the first source signal to the fourth port, with a first phase shift applied to the first source signal upon arrival at the fourth port. The coupling device outputs the second source signal to the fourth port, with a second phase shift applied to the second source signal upon arrival at the fourth port. The first and second phase shifts are equal. After coupling the first and second source signals, the coupling device outputs the coupled signal from the fourth port.

[0045] The first source signal is input into the coupling device through the second port and the input port, and the second source signal is input into the coupling device through the third port and the fifth port. The coupling device outputs the first source signal to the sixth port, with the first source signal having a phase shift of a third phase shift upon arrival at the sixth port. The coupling device outputs the second source signal to the sixth port, with the second source signal having a phase shift of a fourth phase shift upon arrival at the sixth port. The third phase shift is 0.5 times the first phase shift, and the third phase shift is 1.5 times the first phase shift. After coupling the first and second source signals, the coupling device outputs the coupled signal from the sixth port.

[0046] In one embodiment, a first reverse signal is input into a coupling device through the sixth port. The coupling device splits the first reverse signal into a first reverse branch signal and a second reverse branch signal. The coupling device outputs the first reverse branch signal and the second reverse branch signal to the third port and the second port through the fifth port and the input port, respectively. The fifth phase shift of the first reverse branch signal upon reaching the second port is 0.5 times the first phase shift, and the sixth phase shift of the second reverse branch signal upon reaching the third port is 1.5 times the first phase shift.

[0047] The second reverse signal is input into the coupling device through the fourth port. The coupling device splits the second reverse signal into a third reverse branch signal and a fourth reverse branch signal. The coupling device outputs the third reverse branch signal and the fourth reverse branch signal to the third port and the second port through the fifth port and the input port, respectively. The fifth phase shift of the first reverse branch signal upon reaching the second port is the first phase shift, and the sixth phase shift of the second reverse branch signal upon reaching the third port is the first phase shift.

[0048] The signal transmission device and transmission method in the above embodiments can reduce reverse insertion loss, reduce the uplink noise coefficient of the indoor distributed system, and improve the uplink performance of the passive indoor distributed system.

[0049] The methods and systems of the present disclosure may be implemented in many ways. For example, the methods and systems of the present disclosure may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above order of steps for the method is for illustration only, and the steps of the method of the present disclosure are not limited to the order specifically described above unless otherwise specified. In addition, in some embodiments, the present disclosure may also be implemented as programs recorded in a recording medium, which include machine-readable instructions for implementing the methods according to the present disclosure. Therefore, the present disclosure also covers recording media that store programs for executing the methods according to the present disclosure.

[0050] The description of the present disclosure is provided for purposes of illustration and description and is not intended to be exhaustive or to limit the disclosure to the disclosed form. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present disclosure and to enable those skilled in the art to understand the present disclosure and design various embodiments with various modifications suitable for specific applications.

Claims

1. A signal transmission device, comprising: Power dividers and coupling devices; The first port of the power divider is connected to the signal source, and the power divider is used to divide the signal input by the signal source into a first source signal and a second source signal, and output them through the second port and the third port respectively; the input port of the coupling device is connected to the second port, and the fifth port of the coupling device is connected to the third port; the fourth port of the coupling device is connected to the antenna; and the sixth port of the coupling device is connected to an external device; The coupling device is used to couple or split the signal; wherein the coupling or splitting process includes: coupling the first source signal and the second source signal, and splitting the reverse signal input through the sixth port or the fourth port into two signals, wherein: The first source signal is input into the coupling device through the second port and the input port, and the coupling device outputs the first source signal to the fourth port, and the phase shift of the first source signal when reaching the fourth port is the first phase shift; The second source signal is input into the coupling device through the third port and the fifth port, and the coupling device outputs the second source signal to the fourth port, and the phase shift of the second source signal when it reaches the fourth port is the second phase shift; wherein the first phase shift is the same as the second phase shift; The coupling device couples the first source signal and the second source signal, and then outputs the coupling signal from the fourth port; A first reverse signal is inputted into the coupling device from the sixth port, and the coupling device divides the first reverse signal into a first reverse branch signal and a second reverse branch signal; The coupling device outputs the first reverse branch signal and the second reverse branch signal to the third port and the second port through the fifth port and the input port respectively; Among them, the fifth phase shift of the second reverse branch signal when it reaches the second port is 0.5 times the first phase shift, and the sixth phase shift of the first reverse branch signal when it reaches the third port is 1.5 times the first phase shift.

2. The signal transmission device according to claim 1, wherein: The first source signal is input into the coupling device through the second port and the input port, and the coupling device outputs the first source signal to the sixth port, and the phase shift of the first source signal reaching the sixth port is a third phase shift; The second source signal is input into the coupling device through the third port and the fifth port, and the coupling device outputs the second source signal to the sixth port, and the phase shift of the second source signal reaching the sixth port is a fourth phase shift; Wherein, the third phase shift is 0.5 times of the first phase shift, and the fourth phase shift is 1.5 times of the first phase shift; The coupling device couples the first source signal and the second source signal and then outputs the coupled signal from the sixth port.

3. The signal transmission device according to claim 1, wherein: The second reverse signal is input into the coupling device from the fourth port, and the coupling device divides the second reverse signal into a third reverse branch signal and a fourth reverse branch signal; The coupling device outputs the third reverse branch signal and the fourth reverse branch signal to the third port and the second port through the fifth port and the input port respectively; Among them, the fifth phase shift when the fourth reverse branch signal reaches the second port is the first phase shift, and the sixth phase shift when the third reverse branch signal reaches the third port is the first phase shift.

4. The signal transmission device according to any one of claims 1 to 3, wherein: The coupling device includes a bridge device or a coupler; the power divider includes: an equal-proportional power divider.

5. A signal transmission method, applied to a signal transmission device, the signal transmission device comprising: Power dividers and coupling devices; The first port of the power divider is connected to a signal source, the input port of the coupling device is connected to the second port of the power divider, the fifth port of the coupling device is connected to the third port of the power divider, the fourth port of the coupling device is connected to an antenna, and the sixth port of the coupling device is connected to an external device; the method comprises: The power divider divides the signal input by the signal source into a first source signal and a second source signal, and outputs the signals through the second port and the third port respectively; The coupling device couples or splits the signal; The coupling or branching process includes: coupling the first source signal and the second source signal, and dividing the reverse signal input through the sixth port or the fourth port into two signals, wherein: The first source signal is input into the coupling device through the second port and the input port, and the coupling device outputs the first source signal to the fourth port, and the phase shift of the first source signal when reaching the fourth port is the first phase shift; The second source signal is input into the coupling device through the third port and the fifth port, and the coupling device outputs the second source signal to the fourth port, and the phase shift of the second source signal when it reaches the fourth port is the second phase shift; wherein the first phase shift is the same as the second phase shift; The coupling device couples the first source signal and the second source signal, and then outputs the coupling signal from the fourth port; A first reverse signal is inputted into the coupling device from the sixth port, and the coupling device divides the first reverse signal into a first reverse branch signal and a second reverse branch signal; The coupling device outputs the first reverse branch signal and the second reverse branch signal to the third port and the second port through the fifth port and the input port respectively; Among them, the fifth phase shift of the second reverse branch signal when it reaches the second port is 0.5 times the first phase shift, and the sixth phase shift of the first reverse branch signal when it reaches the third port is 1.5 times the first phase shift.

6. The method of claim 5, wherein: The first source signal is input into the coupling device through the second port and the input port, and the second source signal is input into the coupling device through the third port and the fifth port; The coupling device couples or splits the signal, including: The coupling device outputs the first source signal to the sixth port, and the phase shift of the first source signal reaching the sixth port is a third phase shift; The coupling device outputs the second source signal to the sixth port, and the phase shift of the second source signal reaching the sixth port is a fourth phase shift; Wherein, the third phase shift is 0.5 times of the first phase shift, and the fourth phase shift is 1.5 times of the first phase shift; The coupling device couples the first source signal and the second source signal and then outputs the coupled signal from the sixth port.

7. The method of claim 5, wherein: The second reverse signal is input into the coupling device from the fourth port; The coupling device couples or splits the signal, including: The coupling device divides the second reverse signal into a third reverse branch signal and a fourth reverse branch signal; The coupling device outputs the third reverse branch signal and the fourth reverse branch signal to the third port and the second port through the fifth port and the input port respectively; Among them, the fifth phase shift when the fourth reverse branch signal reaches the second port is the first phase shift, and the sixth phase shift when the third reverse branch signal reaches the third port is the first phase shift.

8. The method according to any one of claims 5 to 7, wherein: The coupling device includes a bridge device or a coupler; the power divider includes: an equal-proportional power divider.

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