Coupler directionality detection system, method, and storage medium

Abstract

The application provides a coupler directivity detection system, a method and a storage medium, which aims to detect the power of the specific output port of a power amplifier chip through an external circuit, and realizes control by adjusting the input direction of a radio frequency signal, can quickly obtain necessary parameters related to the directivity of the coupler, thereby facilitating the judgment of the directivity performance of the coupler, and provides a quick and feasible scheme for the performance test of an integrated power amplifier coupler.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of radio frequency circuit, and particularly relates to a coupler directivity detection system, method and storage medium. BACKGROUND

[0002] With the continuous development of mobile communication technology, especially the large-scale popularization of current 5G communication, higher requirements are put forward for the communication quality of the communication system. The accuracy of the transmission power of the mobile phone system determines the level of communication quality.

[0003] Generally, the mobile phone power amplifier is coupled to the mobile phone system chip through the internal integrated coupler, and the coupler coupling power is used to close-loop control the transmission power of the power amplifier, so the directivity of the coupler plays a decisive role in the accuracy of the coupling power. However, how to test and evaluate the directivity of the integrated coupler in the mobile phone power amplifier is a difficult problem.

[0004] The traditional coupler directivity evaluation test method is shown in (a) of Figure 1 , port 1, port 2 and port 3 are connected to port 1, port 2 and port 3 of the network analyzer respectively, and then the S31 and S32 data in the network analyzer are directly read, and S31-S32 is the directivity of the coupler.

[0005] As shown in (b) of Figure 1 , it is one of the schemes of the integrated coupler of the mobile phone power amplifier. Since the coupler is integrated in the output matching back end of the power amplifier, the introduction of the power amplifier and the matching cannot directly represent the coupling coefficient and isolation of the coupler through the network, so that the coupling coefficient of the coupler cannot be directly tested by the architecture shown in (a) of Figure 1 . SUMMARY

[0006] The application provides a coupler directivity detection system, method and storage medium, which aims to solve the technical problem that the existing mobile integrated power amplifier is difficult to evaluate the directivity of the coupler.

[0007] To solve the above technical problems, in a first aspect, the application provides a coupler directivity detection system, which is used to obtain the directivity parameters of a coupler to be tested, and comprises:

[0008] A first detection unit is connected to the radio frequency input port of the coupler to be tested, and is used to provide a radio frequency input signal for the coupler to be tested, or provide an impedance matching for grounding;

[0009] The second detection unit is connected with the coupling output port of the to-be-tested coupler, and is configured to detect the output power of the coupling output port of the to-be-tested coupler or provide impedance matching to ground.

[0010] The third detection unit is connected with the antenna output port of the to-be-tested coupler, and is configured to detect the output power or return loss of the antenna output port of the to-be-tested coupler or provide a radio frequency input signal for the to-be-tested coupler.

[0011] In a second aspect, the present application further provides a detection method for coupler directivity, which is implemented based on the detection system for coupler directivity as described above, and includes the following steps:

[0012] In step S101, a first radio frequency input signal is input to the radio frequency input port of the power amplifier chip through the first detection unit, and the coupling coefficient C of the to-be-tested coupler is obtained according to the power values detected by the second detection unit and the third detection unit.

[0013] In step S102, the first detection unit and the second detection unit are adjusted to impedance matching mode to ground, and the return loss value S detected by the third detection unit is obtained.

[0014] In step S103, the second detection unit is adjusted to the mode of detecting the output power of the coupling output port of the to-be-tested coupler, and the third detection unit is adjusted to the mode of providing a radio frequency input signal.

[0015] In step S104, a second radio frequency input signal with a power of P1 is input to the antenna output port of the to-be-tested coupler through the third detection unit, and the power value P2 detected by the second detection unit is obtained.

[0016] In step S105, the isolation ISO of the to-be-tested coupler is obtained according to the coupling coefficient C, the return loss value S, the second radio frequency input signal P1 and the power value P2, and the value D obtained by subtracting the coupling coefficient C from the isolation ISO is taken as the directivity test result of the to-be-tested coupler and is output.

[0017] Further, in step S101, the power of the first radio frequency input signal is such that the to-be-tested coupler works in a linear region.

[0018] Further, in step S105, the following relationship is satisfied:

[0019] ISO = P1-P3.

[0020] Wherein:

[0021] P3 represents the isolation power of the coupler to be tested;

[0022] P5 = P4 - C, P5 represents the coupling power of the coupler to be tested;

[0023] P4 = P1 - S, P4 represents the reflection power of the coupler to be tested;

[0024] D = ISO - C.

[0025] Further, in step S102, the impedance of the first detection unit and the second detection unit in the impedance matching mode of grounding is 50Ω.

[0026] In a third aspect, the present application also provides a computer device, comprising a memory, a processor, and a coupler directionality detection program stored in the memory and executable on the processor, and the processor implements the steps of the coupler directionality detection method according to any one of the above embodiments when executing the coupler directionality detection program.

[0027] In a fourth aspect, the present application also provides a storage medium, wherein the storage medium stores a coupler directionality detection program, and the coupler directionality detection program implements the steps of the coupler directionality detection method according to any one of the above embodiments when executed by a processor.

[0028] The present application has the advantages that the coupler directionality detection system and method for the integrated power amplifier in a mobile phone are provided, the power of the specific output port of the power amplifier chip is detected through an external circuit, the input direction of the radio frequency signal is adjusted to realize control, the necessary parameters related to the coupler directionality can be quickly obtained, the directionality performance of the coupler can be judged, and a fast and feasible scheme is provided for the performance test of the integrated power amplifier coupler. BRIEF DESCRIPTION OF DRAWINGS

[0029] The present application will be described in detail below with reference to the drawings. The above or other aspects of the present application will become more apparent and more readily appreciated through the detailed description, taken in conjunction with the following drawings, in which:

[0030] Figure 1 (a) in FIG. 1, Figure 1 (b) in FIG. 1 are respectively the test and structural schematic diagrams of the existing mobile phone power amplifier integrated coupler;

[0031] Figure 2 is a structural schematic diagram of the coupler directionality detection system provided by the embodiment of the present application;

[0032] Figure 3is a step flow diagram of a detection method for coupler directivity provided by an embodiment of the present application.

[0033] Figure 4 is a structural diagram of a computer device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the present application clearer, the present application is further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0035] Embodiment one

[0036] Please refer to Figure 2 , Figure 2 is a structural diagram of a detection system for coupler directivity provided by an embodiment of the present application. The detection system 200 is used to obtain the directivity of a coupler to be tested 201. In the implementation process, the coupler to be tested 201 can also be integrated into a chip to be tested of a mobile phone power amplifier, i.e., its structure does not have independence. Specifically, the detection system 200 includes:

[0037] A first detection unit 202 is connected to a radio frequency input port of the coupler to be tested 201. The first detection unit 202 is used to provide a radio frequency input signal for the coupler to be tested 201, or to provide impedance matching for grounding; as shown in the structure, the coupler to be tested 201 is integrated into a chip to be tested 205 of a mobile phone power amplifier. At this time, the first detection unit 202 is connected to a radio frequency input end of the mobile phone power amplifier. Figure 2

[0038] A second detection unit 203 is connected to a coupling output port (CPL) of the coupler to be tested 201. The second detection unit 203 is used to detect the output power of the coupling output port (ANT) of the coupler to be tested 201, or to provide impedance matching for grounding.

[0039] A third detection unit 204 is connected to an antenna output port of the coupler to be tested 201. The third detection unit 204 is used to detect the output power or return loss of the antenna output port of the coupler to be tested 201, or to provide a radio frequency input signal for the coupler to be tested 201.

[0040] It can be understood that the detection units described in the embodiments of the present application all have multiple functions. In the implementation process, by controlling and adjusting the functions of different detection units, the detection and calculation of different directivity parameters can be realized while keeping the connection relationship between the detection system and the coupler to be tested unchanged.

[0041] ​Through the detection system 200 as described above, the chip structure containing the to-be-tested coupler 201 can be directly tested without being independently disassembled, thereby solving the problem of directional detection of the integrated coupler in the mobile phone power amplifier.

[0042] The detection system and method for the coupler directionality of the integrated power amplifier in the mobile phone can detect the power of the specific output port of the power amplifier chip through an external circuit, and can control by adjusting the input direction of the radio frequency signal, so that the necessary parameters related to the coupler directionality can be quickly obtained, thereby facilitating the judgment of the directional performance of the coupler, and providing a fast and feasible scheme for the performance test of the integrated power amplifier coupler.

[0043] Embodiment two

[0044] The embodiment of the application also provides a coupler directionality detection method, which is based on the coupler directionality detection system as described in the above embodiment, please refer to Figure 3 , Figure 3 is a step flowchart of the coupler directionality detection method provided by the embodiment of the application, and the coupler directionality detection method comprises the following steps:

[0045] S101, input a first radio frequency input signal to the radio frequency input port of the power amplifier chip through the first detection unit, and obtain the coupling coefficient C of the to-be-tested coupler according to the power values detected by the second detection unit and the third detection unit;

[0046] S102, adjust the impedance matching mode of the first detection unit and the second detection unit to ground, and obtain the return loss value S detected by the third detection unit;

[0047] S103, adjust the second detection unit to the output power mode of detecting the coupling output port of the to-be-tested coupler, and adjust the third detection unit to the radio frequency input signal mode;

[0048] S104, input a second radio frequency input signal with a power of P1 to the antenna output port of the to-be-tested coupler through the third detection unit, and obtain the power value P2 detected by the second detection unit;

[0049] S105, obtain the isolation ISO of the to-be-tested coupler according to the coupling coefficient C, the return loss value S, the second radio frequency input signal P1 and the power value P2, and take the difference D between the isolation ISO and the coupling coefficient C as the directional test result of the to-be-tested coupler and output.

[0050] Specifically, in step S101, the power of the first radio frequency input signal makes the to-be-tested coupler work in a linear region.

[0051] In step S105, the following relationship is satisfied:

[0052] ISO = P1 - P3;

[0053] wherein:

[0054] P3 represents the isolation power of the to-be-tested coupler;

[0055] P5 = P4 - C, P5 represents the coupling power of the to-be-tested coupler;

[0056] P4 = P1 - S, P4 represents the reflection power of the to-be-tested coupler;

[0057] D = ISO - C.

[0058] In step S102, the impedance of the first detection unit and the second detection unit in the impedance matching mode of grounding is 50Ω.

[0059] The coupler directivity detection method is implemented based on the coupler directivity detection system as described above, and can achieve the same technical effects. For details, refer to the description in the above embodiment, which will not be repeated here.

[0060] Embodiment Three

[0061] The embodiment of the present application also provides a computer device, please refer to Figure 4 , Figure 4 is a structural schematic diagram of the computer device provided by the embodiment of the present application, the computer device 300 comprises a memory 302, a processor 301 and a coupler directivity detection program stored in the memory 302 and executable on the processor 301.

[0062] The processor 301 invokes the coupler directivity detection program stored in the memory 302, and executes the steps in the coupler directivity detection method provided by the embodiment of the present application, please combine Figure 3 , specifically comprising the following steps:

[0063] S101, input a first radio frequency input signal to a radio frequency input port of a power amplifier chip through a first detection unit, and acquire a coupling coefficient C of a to-be-tested coupler according to power values detected by a second detection unit and a third detection unit respectively;

[0064] S102, adjust the first detection unit and the second detection unit to an impedance matching mode of grounding, and acquire a return loss value S detected by the third detection unit.

[0065] S103, adjusting the second detection unit to detect the output power mode of the coupling output port of the to-be-tested coupler, and adjusting the third detection unit to provide a radio frequency input signal mode;

[0066] S104, inputting a second radio frequency input signal with a power of P1 to the antenna output port of the to-be-tested coupler through the third detection unit, and acquiring a power value P2 detected by the second detection unit;

[0067] S105, acquiring the isolation ISO of the to-be-tested coupler according to the coupling coefficient C, the return loss value S, the second radio frequency input signal P1 and the power value P2, and taking the value D obtained by subtracting the coupling coefficient C from the isolation ISO as the directivity test result of the to-be-tested coupler and outputting.

[0068] Specifically, in step S101, the power of the first radio frequency input signal makes the to-be-tested coupler work in a linear region.

[0069] In step S105, the following relationship is satisfied:

[0070] ISO=P1-P3;

[0071] Wherein:

[0072] P3 represents the isolation power of the to-be-tested coupler;

[0073] P5=P4-C, P5 represents the coupling power of the to-be-tested coupler;

[0074] P4=P1-S, P4 represents the reflection power of the to-be-tested coupler;

[0075] D=ISO-C.

[0076] In step S102, the impedance of the impedance matching mode when the first detection unit and the second detection unit are grounded is 50Ω.

[0077] The computer device 300 provided by the embodiment can realize the steps in the coupler directivity detection method in the above-described embodiment, and can realize the same technical effects. Refer to the description in the above-described embodiment, which will not be described here again.

[0078] Embodiment Four

[0079] The embodiment of the present application further provides a storage medium, which stores a coupler directionality detection program. The coupler directionality detection program is executed by a processor to implement each process and step in the coupler directionality detection method provided by the embodiment of the present application, and can achieve the same technical effects. To avoid repetition, details are not described herein.

[0080] A person skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by a coupler directionality detection program or instruction-related hardware. The program can be stored in a computer-readable storage medium. When the program is executed, the program can include the processes of the above-mentioned embodiment methods. The storage medium can be a magnetic disc, an optical disc, a read-only memory (ROM) or a random access memory (RAM).

[0081] It should be noted that, in this document, the term "comprising" or "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that processes, methods, articles or devices including a series of elements not only include those elements, but also include other elements not explicitly listed or inherent to such processes, methods, articles or devices. Without more limitations, the element defined by the statement "including a" does not exclude the presence of another identical element in the process, method, article or device including the element.

[0082] From the above description of the embodiments, a person skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software and a necessary general hardware platform, and of course, they can also be implemented by hardware, but in many cases, the former is a better embodiment. Based on this understanding, the technical solutions of the present application can be embodied in the form of a software product, which is stored in a storage medium (such as a ROM / RAM, a magnetic disc, an optical disc) and includes a plurality of instructions for causing a terminal (which can be a mobile phone, a computer, a server, an air conditioner or a network device) to execute the methods described in the embodiments of the present application.

[0083] The embodiments of the present application are described above in combination with the drawings. The disclosed embodiments are only preferred embodiments of the present application, but the present application is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative, not restrictive. A person skilled in the art can make many equivalent changes in form without departing from the purpose of the present application and the scope protected by the claims, which are all within the protection scope of the present application.

Claims

1. A method of detecting the directionality of a coupler, characterized by, The detection method of the coupler directivity is realized by a detection system for acquiring the directivity parameters of the coupler to be tested, and the detection system comprises: The first detection unit is connected with the radio frequency input port of the coupler to be tested, and is used for providing the coupler to be tested with a radio frequency input signal or providing an impedance matching to ground; The second detection unit is connected with the coupling output port of the coupler to be tested, and is used for detecting the output power of the coupling output port of the coupler to be tested or providing an impedance matching to ground; The third detection unit is connected with the antenna output port of the coupler to be tested, and is used for detecting the output power or return loss of the antenna output port of the coupler to be tested or providing the coupler to be tested with a radio frequency input signal; The detection method of the coupler directivity comprises the following steps: In step S101, the first detection unit inputs a first radio frequency input signal to the radio frequency input port of the power amplifier chip, and acquires the coupling coefficient C of the coupler to be tested according to the power values detected by the second detection unit and the third detection unit; In step S102, the first detection unit and the second detection unit are adjusted to be in an impedance matching mode to ground, and the return loss value S detected by the third detection unit is acquired; In step S103, the second detection unit is adjusted to be in a mode of detecting the output power of the coupling output port of the coupler to be tested, and the third detection unit is adjusted to be in a mode of providing a radio frequency input signal; In step S104, the third detection unit inputs a second radio frequency input signal with a power of P1 to the antenna output port of the coupler to be tested, and acquires the power value P2 detected by the second detection unit; In step S105, the isolation ISO of the coupler to be tested is acquired according to the coupling coefficient C, the return loss value S, the second radio frequency input signal P1 and the power value P2, and the value D obtained by subtracting the coupling coefficient C from the isolation ISO is taken as the directivity test result of the coupler to be tested and is outputted.

2. The method of claim 1, wherein In step S101, the power of the first radio frequency input signal makes the coupler to be tested work in a linear region.

3. The method of claim 1, wherein In step S105, the following relationship is satisfied: ISO = P1-P3; Wherein: P3 represents the isolation power of the coupler to be tested; P5 = P4-C, P5 represents the coupling power of the coupler to be tested; P4 = P1-S, P4 represents the reflection power of the coupler to be tested; D = ISO-C.

4. The method of claim 1, wherein In step S102, the impedance of the first detection unit and the second detection unit in the impedance matching mode to ground is 50Ω.

5. A computer device, comprising: The memory, the processor and the coupler directivity detection program stored on the memory and executable on the processor are included, and the processor realizes the steps in the coupler directivity detection method according to any one of claims 1-4 when executing the coupler directivity detection program. The storage medium stores the coupler directivity detection program, and the steps in the coupler directivity detection method according to any one of claims 1-4 are realized when the coupler directivity detection program is executed by the processor.

6. A storage medium, characterized by ​

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