Device and method for realizing source standing-wave ratio measurement by adopting vector network analyzer

Abstract

The invention relates to the technical field of microwave testing, and provides a device and a method for realizing source standing-wave ratio measurement by adopting a vector network analyzer, and the method comprises the steps: firstly setting the working parameters of the vector network analyzer and a tested signal generator, enabling the working frequency of a vector network excitation source to be the same as the working frequency of the tested signal generator; the vector network analyzer and the tested signal generator share a reference time base; acquiring operation data of the vector network analyzer; when the vector network analyzer works in a frequency sweeping state, the vector network analyzer is firstly connected with the short-circuiting device through the arranged control switch K1, and then the short-circuiting device is disconnected to connect the output end of the tested signal generator; and obtaining a measurement signal output by the vector network analyzer receiver for signal processing to obtain a measurement result of the source standing-wave ratio. The test device for the source standing-wave ratio of the signal source is constructed based on the vector network analyzer, automatic sweep frequency test can be realized, and the accuracy and efficiency of measuring the source standing-wave ratio of the active device are improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field related to microwave testing, and in particular to a device and method for measuring source standing wave ratio using a vector network analyzer. Background Art

[0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

[0003] Source standing wave ratio refers to the standing wave ratio at the output end of a signal source (such as a signal generator) under actual working conditions. It reflects the matching status between the signal source and the load. Since the signal source itself is outputting signals, its output characteristics are easily interfered with, so the measurement of source standing wave ratio is more complicated than that of ordinary load standing wave. Classic signal generator standing wave test methods include: movable detector method, reflectometer method, extended air line method, etc. These methods either cannot perform frequency sweep measurement, or the system is complex and the calibration uncertainty cannot be guaranteed. These methods are used less and less. The movable detector method and reflectometer method can only work at point frequency to measure the standing wave ratio of a signal generator. The test accuracy is affected by the detector, and its linearity needs to be calibrated in advance. The process is complicated and the accuracy is not high. The extended air line method can be implemented by frequency sweep testing through a scalar network analyzer. The test data is closely related to the directionality of the return loss bridge, the calculation is complex, and the accuracy is not high. The live frequency selection test method is a point frequency test method. To test the standing wave ratio of the signal generator in the entire working frequency band, there must be a difference frequency between the test frequency and the source output frequency. Each instrument needs to be set point by point, and the test efficiency is very low.

[0004] Vector network analyzer (VNA) is often used to test the standing wave ratio of passive devices. By calibrating the VNA, the standing wave ratio of any port can be quickly obtained. However, for active devices such as microwave amplifiers and microwave signal generators, when there is an output signal at the output port, it is in a hot state. Since the output signal is at the same frequency as the VNA excitation signal, the VNA's own excitation signal and the output signal of the active device are superimposed in the receiver as a synthetic vector signal. The VNA receiver cannot distinguish between the reflected signal and the output signal of the device under test, and cannot accurately test the standing wave ratio of its output port, where the excitation signal and the output signal are signals with frequency, amplitude and phase. Therefore, it is impossible to directly use the existing VNA to measure the source standing wave ratio of active devices; some people use the conventional test method without power, that is, when the power is not applied, the signal output port is tested as a general load. This method is simple and easy to use, but its biggest disadvantage is the standing wave ratio of the signal source under test in the cold state. The cold state is the state of being powered off and not working or the RF output is turned off, which is different from the hot state during actual working. The measured data cannot reflect the port standing wave ratio of the signal generator in the actual working state. Summary of the invention

[0005] In order to solve the above problems, the present invention proposes a device and method for measuring the source standing wave ratio of a signal source using a vector network analyzer. A test device for the source standing wave ratio of a signal source is constructed based on the vector network analyzer, which can realize automatic frequency sweeping test and improve the accuracy and efficiency of the source standing wave ratio measurement of active devices.

[0006] In order to achieve the above objectives, the present disclosure adopts the following technical solutions:

[0007] One or more embodiments provide a method for measuring source standing wave ratio using a vector network analyzer, comprising the following steps:

[0008] Setting the working parameters of the vector network analyzer and the signal generator under test so that the working frequency of the vector network excitation source is the same as that of the signal generator under test, and the vector network analyzer and the signal generator under test share a common reference time base;

[0009] Get the operating data of vector network analyzer;

[0010] When the vector network analyzer works in the frequency sweep state, the control switch K1 is set to make the vector network analyzer first connect the short circuit, then disconnect the short circuit and connect the output end of the measured signal generator;

[0011] The measurement signal output by the vector network analyzer receiver is obtained and processed to obtain the measurement result of the source standing wave ratio.

[0012] One or more embodiments provide a device for measuring source standing wave ratio using a vector network analyzer, comprising:

[0013] A vector network analyzer, a short circuit device, a control switch K1 and a main controller; the main controller is in communication connection with the control switch K1;

[0014] The main controller controls the on position of the control switch K1, thereby controlling the test port of the vector network analyzer to be connected to the signal output port of the short circuit device or the signal generator under test through the control switch K1; the main controller is configured to execute the steps of the above-mentioned method for realizing source standing wave ratio measurement using a vector network analyzer.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] In the present invention, a controllable switch is set on the test port of a vector network analyzer. During the automatic frequency scanning process of the vector network analyzer, the short-circuit device is first connected, and the vector network analyzer measures the response of 100% reflection through the short-circuit reflection signal, thereby calibrating the reflection measurement benchmark of the system, and automatically measuring the standing wave ratio reference signal for each frequency signal, thereby realizing automatic frequency scanning measurement and improving the accuracy of the source standing wave ratio measurement of the signal source under test.

[0017] The advantages of the present disclosure and the advantages of additional aspects will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings constituting a part of the present disclosure are used to provide a further understanding of the present disclosure. The exemplary embodiments of the present disclosure and the description thereof are used to explain the present disclosure but do not constitute a limitation of the present disclosure.

[0019] Figure 1 is a block diagram of a device for implementing source standing wave ratio measurement using a vector network analyzer according to Embodiment 1 of the present disclosure;

[0020] Figure 2 is a decomposition diagram of a signal collected by a vector network analyzer receiver according to Embodiment 1 of the present disclosure;

[0021] Figure 3 is a method flow chart of Embodiment 2 of the present disclosure; DETAILED DESCRIPTION

[0022] The present disclosure is further described below in conjunction with the accompanying drawings and embodiments.

[0023] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present disclosure. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present disclosure belongs.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present disclosure. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof. It should be noted that, in the absence of conflict, the various embodiments in the present disclosure and the features in the embodiments can be combined with each other. The embodiments will be described in detail below in conjunction with the accompanying drawings.

[0025] Example 1

[0026] In the technical solutions disclosed in one or more embodiments, Figure 1 to Figure 2 As shown, a device for measuring source standing wave ratio using a vector network analyzer includes: a vector network analyzer, a short circuit device, a control switch K1 and a main controller; the main controller is communicatively connected with the control switch K1; the main controller controls the on position of the control switch K1, thereby controlling the test port of the vector network analyzer to be connected to the signal output port of the short circuit device or the measured signal generator through the control switch K1;

[0027] The vector network analyzer is connected via the control switch K1 and the programmable control cable.

[0028] A further technical solution is that in the above solution, the control logic of the main controller can be integrated into the controller of the vector network; in addition to setting and controlling the working state of the vector network, the vector network controller is also connected to the measured signal generator through the data communication interface; the working state (frequency, power, etc.) of the measured signal generator is set by the vector network controller, thereby controlling the test port of the vector network analyzer and the signal output port of the measured signal generator;

[0029] In this embodiment, by setting a controllable switch on the test port of the vector network analyzer, during the automatic frequency scanning process of the vector network analyzer, the short-circuit device is first connected, and the vector network analyzer measures the 100% reflection response through the short-circuit reflection signal, thereby calibrating the reflection measurement benchmark of the system, and automatically measuring the standing wave ratio reference signal for each frequency signal, thereby realizing automatic frequency scanning measurement and improving the accuracy of the source standing wave ratio measurement of the signal source under test.

[0030] According to a further technical solution, the main controller is connected to the controller in the vector network tester for communication so as to obtain the operation data of the vector network, including the working mode, frequency scanning parameters and the like.

[0031] Optionally, the main controller is also connected to an input device for inputting configuration data. When the main controller and the vector network analyzer are not connected in a communication connection, the set working mode of the vector network analyzer can be directly input into the main controller;

[0032] Specifically, the input device may include but is not limited to a keyboard, a mouse, a touch screen, etc.

[0033] like Figure 1 As shown in the figure, it is a specific system connection diagram. The left side is a schematic diagram of the internal structure of the designed vector network analyzer. A phase-locked loop is connected at both ends of the signal generator V1 of the vector network analyzer to improve the frequency and phase stability of the output signal of the signal generator V1 and realize the adjustment of the signal frequency and phase.

[0034] Figure 1 In the figure, the frame on the left is the internal circuit of the improved vector network analyzer:

[0035] The signal source V1 generates an excitation signal; the directional coupler H1 separates a portion of the energy (for example, 10%) from the signal path to the receiver for measuring the excitation signal or the reflected signal. The mixers M1 and M2 are arranged at the intersection of the RF and LO channels. The high-frequency signal (RF) is mixed with the local oscillator (LO) signal through the mixer to generate an intermediate frequency signal (IF). The attenuator in the vector network attenuates the amplitude of the input signal to ensure that the signal amplitude is within the measurement range of the receiver and prevent the receiver from being overloaded. The intermediate frequency amplifier connected after the mixer is used to amplify the intermediate frequency signal (IF) after mixing to increase the signal amplitude and signal-to-noise ratio (SNR).

[0036] The receiver module is used to receive the intermediate frequency signal after mixing and amplification, and to measure and analyze the amplitude and phase. a1 represents the receiver of the incident signal path; b1 represents the reflected signal path.

[0037] Figure 1 In the embodiment, the internal circuit of the vector network is composed of two symmetrical upper and lower parts, and the working principle is the same. In this embodiment, one channel is used to implement the measurement of one signal generator.

[0038] The internal workflow of a vector network analyzer is as follows:

[0039] The signal source V1 generates an excitation signal (RF signal), and a portion of the signal is separated by a directional coupler for measuring the incident signal (a1) and the reflected signal (b1).

[0040] The stimulus signal is connected to the device under test (or short circuit), and part of the signal is reflected back to the vector network analyzer.

[0041] The mixer mixes the received incident signal with the local oscillator signal (LO) to generate an intermediate frequency signal (IF).

[0042] The intermediate frequency amplifier amplifies the IF signal to improve measurement accuracy and signal-to-noise ratio.

[0043] The receiver receives the incident signal and the reflected signal respectively;

[0044] Based on the amplitude and phase calculation of the signal received by the receiver, the reflection coefficient and standing wave ratio (VSWR) of the object under test are obtained.

[0045] The working process of the above-mentioned whole device is described below:

[0046] The main controller first sets the working parameters of the vector network analyzer and the signal generator under test to ensure that the vector network excitation signal is strictly the same frequency as the working frequency of the signal generator under test. The vector network working mode is set to source standing wave ratio test, the excitation signal output by the vector network is attenuated by the set attenuation, and the sweep frequency parameters are set including the test frequency range, frequency conversion interval time and signal output power.

[0047] In a further technical solution, the attenuation is set to be not less than the difference between the output power P1 of the measured source and the output power P2 of the vector network port; that is:

[0048] Attenuation ≥ P1-P2;

[0049] After completing the above instrument settings, execute the source standing wave ratio test process: the first step is to connect a short circuit device to the cable port and send corresponding prompts to perform a single-port short circuit calibration; the second step is to connect the cable port to the signal source under test and send corresponding prompts to perform a source standing wave ratio test.

[0050] During the frequency sweep process of the vector network excitation signal, each frequency point is phase-adjusted 360°, so that the phase of the output signal changes gradually. The signal received by the receiver is the composite signal of the excitation signal and the reflected signal of the measured signal source. The amplitude of the composite signal changes sinusoidally due to the phase change, and its maximum value Umax and minimum value Umin correspond to the states where the phase of the vector signal is exactly the same and completely opposite, respectively. The main controller obtains the measurement signal from the vector network receiver and outputs the measurement result.

[0051] Example 2

[0052] Based on Example 1, this embodiment provides a method for measuring source standing wave ratio using a vector network analyzer, which can be configured to be implemented in a main controller, such as Figure 3 As shown, the following steps are included:

[0053] Step 1, setting the working parameters of the vector network analyzer and the signal generator under test, so that the working frequency of the vector network excitation source is the same as that of the signal generator under test, and the vector network analyzer and the signal generator under test share a common reference time base;

[0054] Step 2: The main controller obtains the operation data of the vector network analyzer, including the working mode and the frequency sweep parameters;

[0055] Step 3, the main controller determines the working state of the vector network analyzer according to the acquired operating data. When the vector network analyzer works in the frequency sweep state, the vector network analyzer is first connected to the short circuiter through the set control switch K1, and then the short circuiter is disconnected to connect the output end of the measured signal generator;

[0056] Step 4: The main controller obtains the measurement signal output by the vector network analyzer receiver for signal processing to obtain the measurement result of the source standing wave ratio.

[0057] Furthermore, before step 1, the operating parameters of the vector network and the signal generator under test are set so that the operating frequency of the vector network excitation source is the same as that of the signal generator under test, which can ensure that the test frequency is the actual operating frequency of the signal generator.

[0058] In step 1, a connection may be established between the main controller and the controller of the vector network analyzer, or the set working mode of the vector network analyzer may be input into the main controller by manually inputting the configuration;

[0059] Alternatively, the control logic of the main controller is integrated into the controller of the vector network analyzer, and the vector network is used as the controller;

[0060] In a further technical solution, the attenuation is set to be not less than the difference between the output power P1 of the measured source and the output power P2 of the vector network port; that is:

[0061] Attenuation ≥ P1-P2;

[0062] Preferably, the vector network attenuation is set to 10 dB attenuation, and the attenuation is performed in sequence according to the attenuation amount of 10 dB to achieve a swept frequency test of the source standing wave ratio under different excitation powers.

[0063] In step 3, when the vector network analyzer is operating in a frequency sweep state, the vector network analyzer is first connected to the short circuit by controlling the switch K1, and then the short circuit is disconnected to connect to the output end of the measured signal generator;

[0064] Specifically, the action direction of K1, the direction in which the switch connects the short circuit device and the direction in which the measured signal generator is connected;

[0065] Furthermore, during the frequency sweep measurement, at each frequency point, the vector network excitation signal is phase-adjusted by at least 360°, so that the phase of the output signal changes gradually, and the synthesized signal contains a maximum value and a minimum value ( Figure 2 That is, during the frequency sweep measurement, the vector network excitation signal is phase-adjusted by 360° at each frequency point, so that the phase of the output signal changes gradually, so that the signal output of the vector network receiver is a sine wave.

[0066] In the above scheme, by adjusting the phase of the vector network excitation signal, the synthetic waveform of the signal can fully reflect the real working state of the active device under test during the frequency sweep process, and the source standing wave ratio can be accurately measured. By gradually changing the phase of the excitation signal, the signal output by the tested signal generator and the reflected signal can be effectively distinguished, thereby avoiding the problem of signal separation and separation error caused by signal superposition in the prior art. Since the phase adjustment is performed at each frequency point, the maximum and minimum values ​​of the synthetic signal are determined, which can effectively reduce the error caused by phase interference in the measurement, and ensure that the signal output is a sine wave, which enables the vector network to accurately measure the source standing wave ratio of the active device in the hot state. This method is not only applicable to common active devices such as microwave amplifiers and microwave signal generators, but also to any other active devices with output signals, and can be widely used in the source standing wave ratio measurement of various radio frequency and microwave test equipment. Compared with traditional manual adjustment or other test methods, this embodiment can improve the test efficiency while ensuring the test accuracy by automatically adjusting the phase, and reduce the possibility of manual intervention and operation errors.

[0067] Specifically, the step length of phase modulation is set, and the signal output by the excitation source of the vector network analyzer is adjusted through a phase-locked loop;

[0068] Step 3: The main controller obtains the measurement signal output by the vector network analyzer receiver for signal processing to obtain the measurement result of the source standing wave ratio. The specific process is as follows:

[0069] Step 31, obtaining the measurement signal output by the receiver, and identifying the maximum and minimum values ​​of the signal amplitude;

[0070] Step 32, calculating the reflection signal amplitude according to the obtained maximum value and minimum value;

[0071] Step 33, calculating the reflection coefficient of the port according to the amplitude of the reflected signal;

[0072] Step 34: Calculate the source standing wave ratio through the reflection coefficient.

[0073] The specific principles of the above data processing process are described as follows:

[0074] The excitation signal generated by the vector network port 1 of the vector network is:

[0075]

[0076] Among them, V1 is the signal amplitude at the output port of the vector network excitation source; ω1 is the signal angular velocity at the output port of the vector network excitation source; t is time; β1 is the propagation constant; z is the distance from the receiver b1 to the port

[0077] When the vector network is connected to the short circuit, the signal detected by the receiver b1 of the vector network is:

[0078]

[0079] Where, L is the reflection coefficient and D is the coupling degree;

[0080] The signal output by the signal generator under test is:

[0081]

[0082] Among them, V0 is the amplitude of the measured signal;

[0083] When the signal source V1 inside the vector network is turned off and the signal generator under test is connected to the vector network, the signal detected by the receiver b1 of the vector network is:

[0084]

[0085] When the signal source V1 inside the vector network is turned on and the signal generator under test is connected to the vector network, the signal detected by the receiver b1 of the vector network is:

[0086]

[0087] like Figure 2 As shown, it is the decomposition of the signal received by signal machine b1;

[0088] Blue Vector V 源 : Indicates the signal that the signal generator under test directly outputs to the b1 receiver;

[0089] Red Vector V 矢 : Represents the output signal of the vector network signal source, which is the reflected signal returned to the b1 receiver after being reflected by the measured signal generator.

[0090] Green Vector V 合 : represents the blue vector V 源 and red vector V 矢 The synthesized signal. This is the signal actually measured by the receiver.

[0091] By adjusting the phase of the vector network excitation signal by 360°, the output signal V 矢 The phase changes gradually; during the phase adjustment process, the vector V 源 and red vector V 矢 The synthesized vector V 合 The amplitude of the signal will change sinusoidally: When the two vectors are in phase, the composite signal V 合 The amplitude reaches the maximum value Umax; when the two vectors are in opposite phases, the composite signal V 合 The amplitude reaches the minimum value Umin.

[0092] The synthetic vector V in step 31合 The difference between the maximum and minimum values ​​is exactly twice the amplitude of the reflected signal, and the formula is expressed as:

[0093]

[0094] Among them, Umax represents the maximum amplitude of the synthesized signal; Umin represents the minimum amplitude of the synthesized signal.

[0095] In step 33, according to the obtained reflection signal amplitude LV1, the reflection signal amplitude is divided by the excitation signal amplitude emitted by the vector network port to obtain the reflection coefficient. The reflection coefficient of the port is Γ L The calculation formula is as follows:

[0096]

[0097] Among them, V 矢f Represents the amplitude of the excitation signal emitted by the vector network port; Γ L It represents the reflection coefficient, reflecting the impedance matching of the signal generator under test;

[0098] In step 34, the reflection coefficient Γ L The formula for calculating the source standing wave ratio is:

[0099]

[0100] The above-mentioned test method of this embodiment can not only measure the port source standing wave ratio of the signal generator under the working state, but also can be used to test the output port of any signal output product (such as a microwave amplifier) ​​under the actual working state. At this time, unlike the passive device output standing wave ratio test method, the vector network port 1 and port 2 output the excitation signal at the same time.

[0101] The execution steps of the main controller for measuring the standing wave ratio of a signal generator using a vector network analyzer described in this embodiment can be integrated into the vector network analyzer as a functional module of the vector network; strict frequency synchronization is achieved by direct setting, that is, the frequency of the vector network excitation signal and the frequency of the source to be measured are directly set to be the same, so that the standing wave ratio measurement of the signal generator with strict frequency synchronization under the actual working state can be achieved. Compared with the classic standing wave test method of the signal generator (movable detector method, reflectometer method, extended air line method, etc.), no linearity calibration is required, the test accuracy is improved, and the frequency sweep test can be performed; compared with the electric frequency selection test method, the standing wave ratio measurement of the signal generator with strict frequency synchronization under the actual working state (hot state) is achieved, and there is no need for a frequency difference between the excitation source and the source to be measured. In addition, in the electric frequency selection test method, the reference source is required to be equal to the power of the source to be measured after passing through the attenuator and the directional coupler, which requires that the power of the reference source is large enough. In this embodiment, there is no requirement for the size of the excitation signal of the vector network, so the power dynamic range of the test is wider. It can also realize frequency sweep measurement of the source standing wave ratio of each output frequency point. The test system only uses a standard vector network analyzer. The system is simple and can be tested automatically with high test efficiency and accuracy.

[0102] The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. For those skilled in the art, the present disclosure may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

[0103] Although the above describes the specific implementation methods of the present disclosure in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present disclosure. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present disclosure, various modifications or variations that can be made by those skilled in the art without creative work are still within the scope of protection of the present disclosure.

Claims

1. A method for measuring source standing wave ratio using a vector network analyzer, characterized in that: The steps include: Setting the working parameters of the vector network analyzer and the signal generator under test so that the working frequency of the vector network excitation source is the same as that of the signal generator under test, and the vector network analyzer and the signal generator under test share a common reference time base; Get the operating data of vector network analyzer; When the vector network analyzer works in the frequency sweep state, the vector network analyzer is first connected to the short circuit by controlling the switch K1, and then the short circuit is disconnected to connect to the output end of the measured signal generator; The measurement signal output by the vector network analyzer receiver is obtained and processed to obtain the measurement result of the source standing wave ratio.

2. The method for measuring source standing wave ratio using a vector network analyzer according to claim 1, characterized in that: The vector network attenuation is set to 10dB attenuation, and the attenuation is sequentially attenuated according to the attenuation of 10dB to achieve the swept frequency test of the source standing wave ratio under different excitation powers.

3. The method for measuring source standing wave ratio using a vector network analyzer according to claim 1, characterized in that: During the frequency sweep measurement, at each frequency point, the vector network excitation signal is phase-adjusted by at least 360° so that the phase of the output signal changes gradually and the synthesized signal contains a maximum value and a minimum value.

4. The method for measuring source standing wave ratio using a vector network analyzer according to claim 1, characterized in that: The calculation process of the source standing wave ratio measurement results includes: Obtain the measurement signal output by the receiver and identify the maximum and minimum values ​​of the signal amplitude; Calculate the reflection signal amplitude based on the obtained maximum and minimum values; Calculate the reflection coefficient of the port according to the amplitude of the reflected signal; The source standing wave ratio is calculated from the reflection coefficient.

5. The method for measuring source standing wave ratio using a vector network analyzer according to claim 4, characterized in that: During the frequency sweep measurement, the vector network excitation signal is phase-adjusted by 360° to obtain the synthetic vector V 合 is a sine wave, according to the synthetic vector V 合 The difference between the maximum and minimum values ​​is twice the amplitude of the reflected signal, and the amplitude of the reflected signal is calculated.

6. A method for measuring source standing wave ratio using a vector network analyzer as claimed in claim 5, characterized in that: The reflection coefficient is obtained by dividing the amplitude of the reflected signal by the amplitude of the excitation signal emitted by the vector network port.

7. A device for measuring source standing wave ratio using a vector network analyzer, characterized in that: include: A vector network analyzer, a short circuit device, a control switch K1 and a main controller; the main controller is in communication connection with the control switch K1; The main controller controls the on position of the control switch K1, thereby controlling the test port of the vector network analyzer to be connected to the signal output port of the short circuit device or the signal generator under test through the control switch K1; the main controller is configured to execute the steps of a method for realizing source standing wave ratio measurement using a vector network analyzer as described in any one of claims 1 to 6.

8. The device for measuring source standing wave ratio using a vector network analyzer as claimed in claim 7, characterized in that: The main controller is connected to the controller in the vector network tester for communication, and is used to obtain the operation data of the vector network; alternatively, the control logic of the main controller is integrated into the controller of the vector network tester.

9. The device for measuring source standing wave ratio using a vector network analyzer as claimed in claim 7, characterized in that: The main controller is also connected to an input device for inputting configuration data.

10. The device for measuring source standing wave ratio using a vector network analyzer according to claim 7, characterized in that: The main controller is also connected with an input device for inputting configuration data.

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