Digital tr component automatic transmit phase test method and system

Abstract

The application discloses a digital TR component automatic emission phase test method and system. An automatic test equipment generates baseband point frequency data required by a digital TR component test, packs the baseband point frequency data and sends the baseband point frequency data to the digital TR component, simultaneously converts the baseband point frequency data into a radio frequency analog signal and sends the radio frequency analog signal to one port of a vector network analyzer through a switch matrix. The digital TR component converts the baseband point frequency data to obtain a radio frequency signal and sends the radio frequency signal to another port of the vector network analyzer through the switch matrix. The vector network analyzer compares the received radio frequency analog signal and the radio frequency signal to obtain a transmission phase consistency test result. A switch matrix is controlled to be switched to each radio frequency port of the digital TR component in sequence until the test of all the radio frequency ports of the digital TR component is completed. A reference signal is generated through a digital signal processing equipment, and the automatic test of the radio frequency ports of the digital TR component is realized.

Description

Technical Field

[0001] This invention relates to the field of automated testing technology, specifically to an automatic transmission phase testing method and system for digital TR components. Background Technology

[0002] In automated testing systems for radio frequency (RF) devices, various test equipment typically only receives analog RF signals because the input and output ports of the RF device under test (DUT) are both RF signals. However, with the development of digitization, many DUTs have become digital, thus test equipment can no longer directly measure them. For example, in existing phase consistency testing methods for transducer (TR) components, the input and output signals of the TR component are RF signals. During testing, a vector network analyzer can perform the test normally, often using the value of a certain channel as a reference value for phase consistency calculation. As existing TR components gradually transition to digital TR components, it becomes impossible to directly measure the phase of digital TR components using a vector network analyzer. Therefore, how to perform phase consistency testing on digital TR components is a problem that needs to be solved. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic transmission phase testing method and system for digital TR components. By adding a digital signal processing device, a reference signal is generated and transmitted back to the vector network analyzer and the digital TR component respectively. The vector network analyzer performs a transmission phase consistency test based on the RF signal transmitted back from the digital TR component and the RF analog signal.

[0004] To achieve the above objectives, this application provides the following solution:

[0005] On the one hand, this application provides an automatic transmission phase testing method for digital TR components, including the following steps:

[0006] S1. Open the automatic test program, set the vector network analyzer to receiver mode, and control the digital TR component and digital signal processing equipment to switch the test mode to transmit mode;

[0007] S2. The automatic test equipment generates the baseband frequency data required for testing the digital TR component and packages the baseband frequency data before sending it to the digital TR component. At the same time, the baseband frequency data is converted into an RF analog signal and sent to a port of the vector network analyzer through a switch matrix.

[0008] S3, the digital TR component converts the baseband point frequency data into an RF signal, and sends the RF signal to another port of the vector network analyzer through a switch matrix;

[0009] S4. The vector network analyzer compares the received RF analog signal and RF signal to obtain the transmit phase consistency test results.

[0010] S5 controls the switch matrix to sequentially switch to each RF port of the digital TR component until the test of all RF ports of the digital TR component is completed.

[0011] In some specific implementations, the process of generating baseband point frequency data in step S2 is as follows:

[0012] S21. Determine the beam weights and select the carrier frequency based on the transmit phase consistency test items of the digital TR component;

[0013] S22. The beam weights and carrier frequency are sent to the digital signal processing equipment. The digital signal processing equipment performs IQ modulation on the baseband signal according to the selected carrier frequency to obtain the baseband point frequency data.

[0014] In some specific implementations, the specific process of converting the baseband IQ point frequency data into an RF analog signal in step S2 is to sequentially perform DAC sampling, IQ modulation, and up-conversion processing on the baseband IQ point frequency data to obtain the RF analog signal.

[0015] Secondly, this application provides an automatic transmit phase test system for digital TR components, including a vector network analyzer, automated test equipment, digital signal processing equipment, digital TR components, and a switching matrix, wherein...

[0016] The automated testing equipment is used to generate the beam weights corresponding to the current channel under test of the digital TR component, and to send the beam weights and frequency parameters to the digital signal processing equipment.

[0017] The digital signal processing equipment is used to generate baseband IQ point frequency data based on the received beam weights and frequency parameters, package the baseband IQ point frequency data and send them to the digital TR component respectively, and at the same time convert the baseband IQ point frequency data into radio frequency analog signals and send them to a port of the vector network analyzer through a switching matrix.

[0018] The digital TR component is used to process the baseband IQ point frequency data to obtain the radio frequency signal, and then send the radio frequency signal to another port of the vector network analyzer;

[0019] Vector network analyzers are used to compare received analog and radio frequency signals to obtain transmit phase consistency test results.

[0020] In some specific implementations, the switch matrix includes a mode selection switch, an instrument selection switch module, and a channel selection switch. The two ports of the vector network analyzer are respectively connected to the input terminals of the instrument selection switch module, and the output terminals of the instrument selection switch module are respectively connected to the switch terminals of the mode selection switch and the channel selection switch. The mode selection switch is used to select the DA terminal and AD terminal of the digital signal processing device, and the channel selection switch is used to select the test channel of the digital TR component.

[0021] In some specific implementations, the switch matrix also includes several interface selection switches, with channel selection switches connected to the input of each interface selection switch and the output of each interface selection switch connected to the RF port of the digital TR component.

[0022] In some specific embodiments, the instrument selection switch module includes a first switch, a third switch, a fourth switch, a fifth switch, and a sixth switch. The first, third, fifth, and sixth switches are all single-pole double-throw switches, each having one switching terminal and two switching terminals.

[0023] The first selector switch is connected to the mode selector switch. The first selector switch is connected to the third selector switch and one port of the vector network analyzer. The third selector switch is connected to one of the fifth and sixth selector switches. The other selector switch is connected to the other selector switch of the sixth selector switch. The fifth selector switch is connected to the fourth selector switch. The fourth selector switch is connected to various testing instruments. The sixth selector switch is connected to the channel selector switch.

[0024] In some specific implementations, the mode selection switch is used to switch to the transmit reference channel according to the current transmit test mode of the digital TR component, and to receive the radio frequency analog signal transmitted by the digital signal processing equipment through the DA terminal;

[0025] The channel selection switch is used to select the current test channel for the digital TR component;

[0026] The interface selection switch is used to select the current test interface in the current test channel. The radio frequency signal is transmitted to the switch matrix along the selected current test channel and current test interface.

[0027] The instrument selection switch module is used to connect the mode selection switch and the vector network analyzer, as well as the digital TR component and the vector network analyzer, respectively, and to transmit the RF analog signal and RF signal back to the two ports of the vector network analyzer.

[0028] In some specific implementations, when the test mode is transmit phase consistency test, the transmission path of the radio frequency analog signal is as follows: digital signal processing device, mode selection switch, first switching switch, and one port of vector network analyzer;

[0029] The transmission path for the radio frequency signal is as follows: digital TR component, interface selection switch, channel selection switch, sixth switch, fifth switch, fourth switch, and another port of the vector network analyzer.

[0030] The beneficial effects of this invention compared to the prior art are as follows:

[0031] In existing technologies, transmit phase consistency testing of TR components typically involves using a vector network analyzer to test the phase of the TR component's channels and transmitting the test results back to a mobile terminal for phase consistency testing. However, vector network analyzers generally transmit analog radio frequency signals. With the digitization of TR components, digital TR components output baseband digital signals, which vector network analyzers cannot directly process. Furthermore, to achieve automated testing and limit the number of vector network analyzers used, typically only one analyzer is used, meaning only one test channel of the TR component is connected at a time. This prevents the use of the phase of other channels as a reference for transmit phase consistency testing.

[0032] This application adds a digital signal processing device to generate baseband frequency data required for testing the digital TR component. This baseband frequency data is then split into two paths: one path is converted into an RF analog signal receivable by a vector network analyzer and sent to the analyzer via a switching matrix; the other path is sent to the digital TR component via a high-speed digital fiber optic cable. The digital TR component converts this signal back into an RF signal and sends it to another port of the vector network analyzer via the switching matrix. The vector network analyzer measures the signals at both ports to obtain the transmit phase consistency test results. By using a switching matrix to switch each interface of each channel and generating a reference signal through the digital signal processing device, automated testing of the RF ports of the digital TR component is achieved. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the transmit phase consistency test system provided in an embodiment of the present invention;

[0034] Figure 2 This is a schematic diagram of an automatic testing system provided in an embodiment of the present invention;

[0035] Figure 3 This is a flowchart of the transmission phase consistency test method provided in the embodiments of this application. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention.

[0038] At the same time, it should be understood that, for ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn according to actual scale.

[0039] Furthermore, for clarity and brevity, descriptions of well-known structures, functions, and configurations may have been omitted. Those skilled in the art will recognize that various changes and modifications can be made to the examples described herein without departing from the spirit and scope of this disclosure.

[0040] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.

[0041] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.

[0042] Example 1

[0043] This embodiment provides an automated transmit phase testing system for digital TR components, including a vector network analyzer, automated testing equipment, digital signal processing equipment, digital TR components, and a switching matrix.

[0044] The switch matrix includes a mode selection switch 7, an instrument selection switch module, a channel selection switch 1, and an interface selection switch for each channel. The two ports of the vector network analyzer are connected to the input terminals of the instrument selection switch module, and the output terminals of the instrument selection switch module are connected to the switches of the mode selection switch and the channel selection switch. The mode selection switch is used to select the DA and AD terminals of the digital signal processing equipment, and the channel selection switch is used to select the test channel of the digital TR component. The channel selection switch is connected to the input terminal of each interface selection switch, and the output terminal of each interface selection switch is connected to the RF port of the digital TR component.

[0045] More specifically, the instrument selection switch module includes a first switch, a third switch, a fourth switch, a fifth switch, and a sixth switch. The first, third, fifth, and sixth switches are all single-pole double-throw switches, each with one switching terminal and two switching terminals.

[0046] The first selector switch is connected to the mode selector switch. The first selector switch is connected to the third selector switch and one port of the vector network analyzer. The third selector switch is connected to one of the fifth and sixth selector switches. The other selector switch is connected to the other selector switch of the sixth selector switch. The fifth selector switch is connected to the fourth selector switch. The fourth selector switch is connected to various testing instruments. The sixth selector switch is connected to the channel selector switch.

[0047] for Figure 1 The system consists of various components, among which,

[0048] The automated testing equipment is used to generate the beam weights corresponding to the current channel under test of the digital TR component, and to send the beam weights and frequency parameters to the digital signal processing equipment.

[0049] The digital signal processing equipment is used to generate baseband IQ point frequency data based on the received beam weights and frequency parameters, package the baseband IQ point frequency data and send them to the digital TR component respectively, and at the same time convert the baseband IQ point frequency data into radio frequency analog signals and send them to a port of the vector network analyzer through a switching matrix.

[0050] The digital TR component is used to process the baseband IQ point frequency data to obtain the radio frequency signal, and then send the radio frequency signal to another port of the vector network analyzer;

[0051] Vector network analyzers are used to compare received analog and radio frequency signals to obtain transmit phase consistency test results.

[0052] The mode selection switch is used to switch to the transmit reference channel according to the current transmit test mode of the digital TR component, and to receive the radio frequency analog signal transmitted by the digital signal processing equipment through the DA terminal;

[0053] The channel selection switch is used to select the current test channel for the digital TR component;

[0054] The interface selection switch is used to select the current test interface in the current test channel. The radio frequency signal is transmitted to the switch matrix along the selected current test channel and current test interface.

[0055] The instrument selection switch module is used to connect the mode selection switch and the vector network analyzer, as well as the digital TR component and the vector network analyzer, respectively, and to transmit the RF analog signal and RF signal back to the two ports of the vector network analyzer.

[0056] based on Figure 1 The testing process is as follows:

[0057] Since the digital TR component has multiple channels, this embodiment uses a four-channel digital TR component as an example. Therefore, the channel selection switch 1 is a single-pole four-throw switch, corresponding to the number of channels in the digital TR component. During testing, the channel selection switch can be used to sequentially switch to each channel. Each channel of the digital TR component corresponds to multiple RF ports. Therefore, an interface selection switch is also needed to sequentially transmit the first analog signal to each RF port of each channel during testing. The number of interface selection switches corresponds to the number of channels. This embodiment has four interface selection switches 2, 3, 4, and 5, each corresponding to the eight RF ports of the digital TR component. To enable multiple RF test instruments to be connected to the test system, a fourth selection switch 11 is provided. It can be seen that the fourth selection switch is a four-to-one switch. The four switching terminals are respectively connected to the signal source, the first attenuator (connected to the power meter), the second attenuator (connected to the spectrum analyzer), and the P2 port of the vector network analyzer, for switching between these four test instruments.

[0058] When the test mode is transmit phase consistency test, the automatic test software first generates the beam weights corresponding to the channel under test and sends the weights and frequency parameters to the digital signal processing equipment. After receiving the weights and frequency information, the digital signal processing equipment generates baseband IQ point frequency data based on the frequency information, packages it, and sends it to the digital TR component. At the same time, the digital signal processing equipment performs DAC, filtering, and up-conversion processing on the baseband IQ point frequency data to obtain an RF analog signal. The transmission methods for the obtained RF signal and RF analog signal are as follows:

[0059] The radio frequency analog signal is transmitted from the AD port of the digital signal processing device from the transmit reference channel (L) to the switch matrix. At this time, the mode selection switch 7 switches to the transmit reference channel (L) and then controls the first switching switch 8 to select the P1 port of the vector network analyzer.

[0060] After the RF signal is output from the digital TR component, the control channel selection switch 1 and interface selection switch 7 are connected to the RF port corresponding to the test channel to be tested. In this way, the RF signal is transmitted to the switch matrix along the path formed by the interface selection switch and the channel selection switch. In the switch matrix, the path of the sixth switch, the fifth switch and the fourth switch are turned on, and the fourth switch is turned on to connect to the P2 port of the vector network analyzer. This allows the RF signal to be transmitted to the P2 port of the vector network analyzer along the conduction path. The vector network analyzer is set to receiver mode with A / B format, and the transmit phase can be measured.

[0061] like Figure 2As shown, this embodiment also provides an automatic test system for multi-channel digital TR components, which includes not only transmit phase testing but also other test scenarios, such as receive phase testing. To enable switching between multiple test scenarios, the switch matrix includes a first switching switch 8 (to achieve compatibility between the receive and transmit phase consistency test systems, the first switching switch 8 can be set as a three-terminal switching switch, so that it can be directly connected to the vector network analyzer when performing transmit phase consistency testing, and can also receive the RF signal transmitted by the power divider 6 when performing receive phase consistency testing), a second switching switch 9, and a third switching switch... Switches 10, 11, 12, 13, 14, and 15 are configured as follows: Except for switch 11 (a four-to-one switch) and switch 14 (a double-pole double-throw switch), all other switches are single-pole double-throw switches. The vector network analyzer has two ports, P1 and P2. Port P1 is connected to the input of power divider 6. The output of power divider is connected to the switching terminals of first switch 8 and second switch 9. The switching terminal of second switch 9 is connected to a noise source, and the switching terminal of second switch 9 is connected to the seventh switch. The J1 port of switch 14 is connected to the input terminal of the first switch 8. The other terminal of the first switch 8 is connected to the input terminal of the third switch 10. The input terminals of the third switch 10 are connected to the input terminals of the fifth switch 12 and the sixth switch 13. The input terminal of the fifth switch 12 is connected to the input terminal of the sixth switch 13. The input terminal of the fifth switch 12 is connected to the input terminal of the fourth switch 11. The input terminals of the fourth switch 11 are connected to the signal source, the first attenuator (connected to the power meter), and the second attenuator (connected to...). Connected to the P2 port of the spectrum analyzer and the vector network analyzer, the switch terminal of the sixth switch 13 is connected to the J3 port of the seventh switch 14. The J2 port of the seventh switch 14 is connected to the input terminal of the channel switch 1, and the J4 port is connected to the switch terminal of the eighth switch 15. The J1-J4 ports of the channel switch 1 are respectively connected to the input terminals of the interface switches 2-5. The switch terminal of the eighth switch 15 is respectively connected to the RF terminal of the time-frequency optical transmission equipment. When different test items are required, it is only necessary to control the corresponding switch action in the switch matrix to switch to the corresponding test link. When performing the transmission phase consistency test, each switch is activated, and the signal flow path is shown by the dotted line in the figure. The action process within the switch matrix is ​​as follows:

[0062] The first switch 8 is switched to the terminal connected to the P1 port of the vector network analyzer. The mode switch 7 is switched to the terminal connected to the transmit reference channel (L). The seventh switch 14 is switched to the terminal connected to the J2 and J3 ports. The channel switch 1 is switched to the terminal connected to the interface switch 2 corresponding to the first channel. The interface switch 2 is switched sequentially to the XS03-XS10 RF ports of the digital TR component. The fourth switch is switched to the terminal connected to the P2 port of the vector network analyzer. The RF analog signal travels along the mode selection switch, the first switch, and the P1 port of the vector network analyzer. The RF signal travels along the interface selection switch, the channel selection switch, the sixth switch, the fifth switch, the fourth switch, and the P2 port of the vector network analyzer.

[0063] Example 2

[0064] like Figure 3 As shown, this embodiment provides an automatic transmission phase testing method for digital TR components, including the following steps:

[0065] S1. Open the automatic test program, set the vector network analyzer to receiver mode, and control the digital TR component and digital signal processing equipment to switch the test mode to transmit mode;

[0066] S2. The automatic test equipment generates the baseband frequency data required for testing the digital TR component and packages the baseband frequency data before sending it to the digital TR component. At the same time, the baseband frequency data is converted into an RF analog signal and sent to a port of the vector network analyzer through a switch matrix.

[0067] S3, the digital TR component converts the baseband point frequency data into an RF signal, and sends the RF signal to another port of the vector network analyzer through a switch matrix;

[0068] S4. The vector network analyzer compares the received RF analog signal and RF signal to obtain the transmit phase consistency test results.

[0069] S5. Control the switch matrix to sequentially switch to each RF port of the digital TR component, and send port switching commands for switching test channels and test interfaces to the switch matrix, so that one RF port of one channel of the digital TR component is connected to the vector network analyzer until the test of all RF ports of the digital TR component is completed.

[0070] In some specific implementations, the process of generating baseband point frequency data in step S2 is as follows:

[0071] S21. Determine the beam weights and select the carrier frequency based on the transmit phase consistency test items of the digital TR component;

[0072] S22. The beam weights and carrier frequency are sent to the digital signal processing equipment. The digital signal processing equipment performs IQ modulation on the baseband signal according to the selected carrier frequency to obtain the baseband point frequency data.

[0073] In some specific implementations, the specific process of converting the baseband IQ point frequency data into an RF analog signal in step S2 is to sequentially perform DAC sampling, IQ modulation, and up-conversion processing on the baseband IQ point frequency data to obtain the RF analog signal.

[0074] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Based on the technical essence of the present invention, any simple modifications, equivalent substitutions, and improvements made to the above embodiments within the spirit and principles of the present invention shall still fall within the protection scope of the present invention.

Claims

1. An automatic transmission phase testing method for digital TR components, characterized in that, Includes the following steps: S1. Open the automatic test program, set the vector network analyzer to receiver mode, and control the digital TR component and digital signal processing equipment to switch the test mode to transmit mode; S2. The automatic test equipment generates the baseband frequency data required for testing the digital TR component and packages the baseband frequency data before sending it to the digital TR component. At the same time, the baseband frequency data is converted into an RF analog signal and sent to a port of the vector network analyzer through a switch matrix. S3, the digital TR component converts the baseband point frequency data into an RF signal, and sends the RF signal to another port of the vector network analyzer through a switch matrix; The switch matrix includes a mode selection switch, an instrument selection switch module, a channel selection switch, and an interface selection switch for each channel. The two ports of the vector network analyzer are connected to the input of the instrument selection switch module, and the output of the instrument selection switch module is connected to the switch terminals of the mode selection switch and the channel selection switch. The mode selection switch is used to select the DA and AD terminals of the digital signal processing equipment and switch to the transmit reference channel according to the current transmit test mode of the digital TR component to receive the radio frequency analog signal transmitted by the digital signal processing equipment through the DA terminal; The channel selection switch is used to select the test channel for the digital TR component; The channel selection switch is connected to the input terminal of each interface selection switch, and the output terminal of each interface selection switch is connected to the RF port of the digital TR component. S4. The vector network analyzer compares the received RF analog signal and RF signal to obtain the transmit phase consistency test results. S5 controls the switch matrix to sequentially switch to each RF port of the digital TR component until the test of all RF ports of the digital TR component is completed.

2. The automatic transmission phase testing method for digital TR components according to claim 1, characterized in that, The process of generating baseband point frequency data in step S2 is as follows: S21. Determine the beam weights and select the carrier frequency based on the transmit phase consistency test items of the digital TR component; S22. The beam weights and carrier frequency are sent to the digital signal processing equipment. The digital signal processing equipment performs IQ modulation on the baseband signal according to the selected carrier frequency to obtain the baseband point frequency data.

3. The automatic transmission phase testing method for digital TR components according to claim 1, characterized in that, The specific process of converting the baseband IQ point frequency data into an RF analog signal in step S2 is to sequentially perform DAC sampling, IQ modulation, and up-conversion processing to obtain the RF analog signal.

4. An automatic transmission phase testing system for digital TR components, including a vector network analyzer, characterized in that, This includes automated testing equipment, digital signal processing equipment, digital TR components, and switch matrices, among which... The automated testing equipment is used to generate the beam weights corresponding to the current channel under test of the digital TR component, and to send the beam weights and frequency parameters to the digital signal processing equipment. The digital signal processing equipment is used to generate baseband IQ point frequency data based on the received beam weights and frequency parameters, package the baseband IQ point frequency data and send them to the digital TR component respectively, and at the same time convert the baseband IQ point frequency data into radio frequency analog signals and send them to a port of the vector network analyzer through a switching matrix. The digital TR component is used to process the baseband IQ point frequency data to obtain the radio frequency signal, and then send the radio frequency signal to another port of the vector network analyzer; Vector network analyzers are used to compare received analog RF signals and RF signals to obtain transmit phase consistency test results; The switch matrix includes a mode selection switch, an instrument selection switch module, and a channel selection switch. The two ports of the vector network analyzer are connected to the input terminals of the instrument selection switch module, and the output terminals of the instrument selection switch module are connected to the switch terminals of the mode selection switch and the channel selection switch, respectively. The mode selection switch is used to select the DA and AD terminals of the digital signal processing equipment, and the channel selection switch is used to select the test channel of the digital TR component.

5. The automatic transmission phase testing system for digital TR components according to claim 4, characterized in that, The switch matrix also includes several interface selection switches. The channel selection switches are connected to the input of each interface selection switch, and the output of each interface selection switch is connected to the RF port of the digital TR component.

6. The automatic transmission phase testing system for digital TR components according to claim 4, characterized in that, The instrument selection switch module includes a first switch, a third switch, a fourth switch, a fifth switch, and a sixth switch. The first, third, fifth, and sixth switches are all single-pole double-throw switches, each with one switching terminal and two switching terminals. The first selector switch is connected to the mode selector switch. The first selector switch is connected to the third selector switch and one port of the vector network analyzer. The third selector switch is connected to one of the fifth and sixth selector switches. The other selector switch is connected to the other selector switch of the sixth selector switch. The fifth selector switch is connected to the fourth selector switch. The fourth selector switch is connected to various testing instruments. The sixth selector switch is connected to the channel selector switch.

7. The automatic transmission phase testing system for digital TR components according to claim 5, characterized in that, The mode selection switch is used to switch to the transmit reference channel according to the current transmit test mode of the digital TR component, and to receive the radio frequency analog signal transmitted by the digital signal processing equipment through the DA terminal; The channel selection switch is used to select the current test channel for the digital TR component; The interface selection switch is used to select the current test interface in the current test channel. The radio frequency signal is transmitted to the switch matrix along the selected current test channel and current test interface. The instrument selection switch module is used to connect the mode selection switch and the vector network analyzer, as well as the digital TR component and the vector network analyzer, respectively, and to transmit the RF analog signal and RF signal back to the two ports of the vector network analyzer.

8. The automatic transmission phase testing system for digital TR components according to claim 6, characterized in that, When the test mode is transmit phase consistency test, the transmission path of the RF analog signal is as follows: digital signal processing equipment, mode selection switch, first switching switch, and one port of the vector network analyzer; The transmission path for the radio frequency signal is as follows: digital TR component, interface selection switch, channel selection switch, sixth switch, fifth switch, fourth switch, and another port of the vector network analyzer.

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