Digital TR assembly automatic test system and method

Abstract

The invention discloses a digital TR component automatic test system and method. A switch matrix is used for switching a test device connected with a digital TR component and a digital signal processing device, switching a reference channel connected with the digital signal processing device and the switch matrix, and switching a currently tested radio frequency port of the digital TR component; the digital signal processing equipment carries out digital processing on the radio frequency signal or converts a digital signal into the radio frequency signal and then sends the radio frequency signal to the corresponding test equipment through the switch matrix; the digital TR assembly carries out digital processing on the radio-frequency signal and then sends the radio-frequency signal to the digital signal processing equipment, or receives a digital signal from the digital signal processing equipment, converts the digital signal into the radio-frequency signal and then sends the radio-frequency signal to the corresponding test equipment through the switch matrix; the automatic test equipment processes digital signals transmitted by the digital signal processing equipment or sends the digital signals to the digital signal processing equipment, and digital automatic test switching of a receiving test mode and a transmitting test mode can be completed through the switch matrix.

Description

Technical Field

[0001] The present invention relates to the field of automated testing technology, and in particular to a digital TR component automated testing system and method. Background Art

[0002] In the automated test system of RF devices, various test equipment can generally only receive RF analog signals, because the input and output ports of the RF devices to be tested are all RF signals. However, with the development of digitalization, many RF devices to be tested have been digitized, so the test equipment can no longer directly measure the RF devices to be tested. General measuring instruments include vector network analyzers, power meters, spectrum analyzers and other equipment. When performing transmission mode tests, they include transmission phase consistency tests and transmission gain tests. When there are multiple RF test equipment, how to implement the test of digital TR components is a problem that needs to be solved. Summary of the invention

[0003] The purpose of the present invention is to provide a digital TR component automatic testing method and system, which can complete the automatic test switching of the receiving and transmitting test modes by constructing an automatic testing system through a digital signal processing device and a switch matrix.

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

[0005] On the one hand, the present application provides a digital TR component automatic test system, including a test device, a switch matrix, a digital TR component, a digital signal processing device and an automatic test device, wherein the test device includes a vector network analyzer, a power meter and a signal source, wherein:

[0006] The switch matrix is ​​used to switch the digital TR component and the test equipment connected to the digital signal processing device according to the test item currently being executed, switch the reference channel connected between the digital signal processing device and the switch matrix, and switch the RF port currently being tested by the digital TR component;

[0007] The digital signal processing device is used to digitally process the radio frequency signal of the test device transmitted through the switch matrix according to the test item currently being executed, or convert the digital signal into a radio frequency signal and then send it to the corresponding test device through the switch matrix;

[0008] The digital TR component is used to digitize the RF signal of the test device transmitted through the switch matrix according to the test item currently being executed and send it to the digital signal processing device, or receive the digital signal from the digital signal processing device, convert it into a RF signal, and then send it to the corresponding test device through the switch matrix;

[0009] The automated test equipment is used to process the digital signal transmitted by the digital signal processing equipment or send the digital signal to the digital signal processing equipment according to the test item currently being executed.

[0010] In some specific implementations, the switch matrix includes a power divider, a test equipment switching switch module, a mode selection switch, a channel selection switch, and several interface selection switches corresponding to each test channel, wherein the vector network analyzer is connected to the input end of the power divider, the test equipment switching switch module is respectively connected to each test equipment, the output end of the power divider, the switch end of the channel selection switch, and the switch end of the mode selection switch, the enable end of the mode selection switch is respectively connected to the DA end and the AD end of the digital signal processing device, the enable end of the channel selection switch is respectively connected to the switch end of each interface selection switch, and the enable end of each interface selection switch is respectively connected to the RF port of the digital TR component.

[0011] In some specific implementations, the test equipment switching switch module includes a first selection switch, a second selection switch, a third selection switch, a fourth selection switch and a fifth selection switch, wherein the second selection switch, the third selection switch and the fourth selection switch all use single-pole double-throw switches, including a switch end and two selection ends, the fifth selection switch uses a single-pole four-throw switch, and the first selection switch uses a single-pole three-throw switch, wherein,

[0012] The switch end of the first selection switch is connected to the switch end of the mode selection switch, the enable end of the first selection switch is respectively connected to the enable end of the fourth selection switch, the enable end of the second selection switch and the output end of the power divider, the switch end of the second selection switch is connected to the switch end of the fifth selection switch, the enable end of the third selection switch is respectively connected to the output end of the power divider and the enable end of the second selection switch, the switch end of the third selection switch is connected to the switch end of the channel selection switch, the switch end of the fourth selection switch is connected to the P1 end of the vector network analyzer, the enable end of the fourth selection switch is respectively connected to the input end of the power divider and the enable end of the first selection switch, and the enable end of the fifth selection switch is respectively connected to the P2 port of the vector network analyzer, the power meter, the signal source and the spectrum analyzer.

[0013] In some specific implementations, if the test item currently being executed is a transmission gain test, the automated test equipment is used to generate a beam weight corresponding to the current tested channel of the digital TR component, and send the beam weight and frequency parameters to the digital signal processing device;

[0014] The switch matrix operates to switch the test equipment connected to the digital TR component to a power meter;

[0015] The digital signal processing device is used to generate baseband IQ point frequency data according to the received beam weight and frequency parameters, package the baseband IQ point frequency data and send it to the digital TR component, and convert the baseband IQ point frequency data into RF analog signals and send them to the power meter through the switch matrix;

[0016] The digital TR component is used to process the baseband IQ frequency data to obtain the RF signal, and then send the RF signal to the power meter through the switch matrix switching port;

[0017] The power meter is used to compare the received RF analog signal with the RF signal to obtain the transmission gain test result.

[0018] In some specific implementations, if the test item currently being executed is a transmission gain test, the action process of the switch matrix is:

[0019] Switching the fifth selection switch to the gate end connected to the power meter, switching the second selection switch to the gate end connected to the first selection switch, and switching the first selection switch to the gate end connected to the second selection switch;

[0020] Switching the mode selection switch to the enable end connected to the transmit reference channel, so that the radio frequency signal is transmitted to the power meter through the switch matrix along the transmit reference channel;

[0021] Switch the second selection switch to the gate end connected to the third selection switch, and switch the third selection switch to the gate end connected to the second selection switch, so that the radio frequency signal sent by the digital TR component is transmitted to the power meter along the third selection switch and the second selection switch;

[0022] The channel selection switch is used to select the current test channel of the digital TR component;

[0023] The interface selection switch is used to select the current test interface in the current test channel, and the radio frequency signal is transmitted to the switch matrix along the selected current test channel and the current test interface.

[0024] In some specific implementations, if the test item currently being executed is a transmit phase consistency test, the automated test equipment is used to generate a beam weight corresponding to the current tested channel of the digital TR component, and send the beam weight and frequency parameters to the digital signal processing device;

[0025] The switch matrix operates to switch the test equipment connected to the digital TR component to the vector network analyzer;

[0026] The digital signal processing device is used to generate baseband IQ point frequency data according to the received beam weight and frequency parameters, package the baseband IQ point frequency data and send them to the digital TR component respectively, and convert the baseband IQ point frequency data into RF analog signals and send them to the P1 port of the vector network analyzer through the switch matrix;

[0027] The digital TR component is used to process the baseband IQ frequency data to obtain the RF signal and send the RF signal to the P2 port of the vector network analyzer;

[0028] The vector network analyzer is used to compare the received RF analog signal with the RF signal to obtain the transmit phase consistency test result.

[0029] In some specific implementations, if the test item currently being executed is a transmit phase consistency test, the action process of the switch matrix is:

[0030] Switch the mode selection switch to the gate end connected to the transmission reference channel, switch the first selection switch to the gate end connected to the fourth conversion switch, and switch the fourth selection switch to the gate end connected to the first selection switch, so that the RF analog signal is transmitted to the P1 port of the vector network analyzer along the transmission reference channel;

[0031] Switch the third selection switch to the enable end connected to the second selection switch, switch the second selection switch to the enable end connected to the third selection switch, and switch the fifth selection switch to the enable end connected to the P2 port of the vector network analyzer, so that the RF signal sent by the digital TR component is sent to the P2 port of the vector network analyzer along the conduction path.

[0032] In some specific implementations, if the test item currently being executed is a receive phase consistency test, the action process of the switch matrix is:

[0033] Switching the fourth switch to the enable end connected to the power divider, the vector network analyzer sends the radio frequency single tone signal to the power divider;

[0034] The power divider divides the single-tone signal sent by the vector network analyzer into a first radio frequency signal and a second radio frequency signal;

[0035] Switch the first selection switch to the gate end connected to the power divider, and switch the third switch to the gate end connected to the power divider, so that the first radio frequency signal is transmitted to the mode selection switch along the first selection switch, and the second radio frequency signal is transmitted to the channel selection switch along the third switch;

[0036] The channel selection switch is used to select the current test channel of the digital TR component;

[0037] The interface selection switch is used to select the current test interface in the current test channel, and the second radio frequency signal is transmitted to the digital TR component along the selected current test channel and the current test interface.

[0038] In a second aspect, the present application provides a digital TR component automatic testing method, which uses the digital TR component automatic testing system described in the first aspect, including an automatic transmission testing method, specifically including the following steps:

[0039] S1. Load the test items of the transmit phase consistency test and the transmit gain test respectively;

[0040] S2. When the corresponding test item needs to be executed, the switch matrix, the digital TR component and the digital signal processing device are configured, and a switch action instruction for switching the test device is sent to the switch matrix, so that the test device corresponding to the current test item is connected to the digital TR component;

[0041] S3, when starting to execute the corresponding test item, a port switching instruction for switching the test channel and the test interface is sent to the switch matrix, so that a radio frequency port in a channel of the digital TR component is connected to the corresponding test equipment;

[0042] S4, the automatic test software generates the baseband frequency data required for the digital TR component test and packages the baseband frequency data and sends it to the digital TR component, and at the same time converts the baseband frequency data into a radio frequency analog signal and sends it to the corresponding test equipment through the switch matrix;

[0043] S5, the digital TR component converts the baseband frequency data to obtain a radio frequency signal, and sends the radio frequency signal to the corresponding test equipment through the switch matrix;

[0044] S6. The test equipment measures the received RF analog signal and RF signal to obtain the transmission test result; the switch matrix is ​​controlled to switch to each RF port of the digital TR component in turn until the test of all RF ports of the digital TR component is completed.

[0045] In a third aspect, the present application provides a digital TR component automatic reception test method, which is applied to the digital TR component automatic test system described in the first aspect, including an automatic reception test method, specifically including the following steps:

[0046] S11, loading the test items of the receiving phase consistency test and the receiving gain test respectively;

[0047] S21, when it is necessary to execute the corresponding test item, configure the switch matrix, the digital TR component and the digital signal processing device, and send a device switching instruction to the switch matrix to switch the test device, so that the test device corresponding to the current test item is connected to the digital TR component;

[0048] S31, when starting to execute the corresponding test item, sending a port switching instruction for switching the test channel and the test interface to the switch matrix, so that a radio frequency port in a channel of the digital TR component is connected to the corresponding test equipment;

[0049] S41, the digital TR component and the digital signal processing device respectively receive the radio frequency signal sent by the test device through the switch matrix, and after digital processing, the digital signal is output to the automatic test software;

[0050] S51. The automatic test software calls the FFT algorithm to calculate the digital signal to obtain the test result corresponding to the corresponding test item, and repeats steps S31-S41 until the test of all RF ports of the digital TR component under the corresponding test item is completed.

[0051] Compared with the prior art, the present invention has the following beneficial effects:

[0052] This application uses a digital signal processing device and a switch matrix to control the switch matrix to switch to the corresponding test device and test channel according to the current required test scenario, completing the digital test process of the receiving and transmitting test scenarios;

[0053] When conducting a transmission test, the automatic test software is used to generate the beam weights and frequency parameters required for the digital TR component test. The digital signal processing device generates baseband IQ data based on the beam weights and frequency information, performs DA conversion on the baseband IQ data to obtain an RF signal, and then sends it to the corresponding test device through the transmission reference channel. At the same time, the digital TR component processes the baseband IQ data to obtain an RF signal, which is sent to the corresponding test device through the switch matrix to complete the transmission test.

[0054] When performing the receiving phase consistency test, the baseband frequency data required for the digital TR component test is generated by the digital signal processing device, and the baseband frequency data is divided into two paths. One path is converted into an RF analog signal that can be received by the vector network analyzer and sent to the vector network analyzer through the switch matrix, and the other path is sent to the digital TR component through a high-speed digital optical fiber. After being converted into an RF signal by the digital TR component, it is sent to the other port of the vector network analyzer through the switch matrix; the vector network analyzer measures the signals of the two ports to obtain the transmission phase consistency test results. By switching each interface of each channel using the switch matrix and generating a reference signal through the digital signal processing device, the automated test of the RF port of the digital TR component is realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 A schematic diagram of an automatic testing system provided by an embodiment of the present invention;

[0056] Figure 2 A signal flow diagram for a transmission gain test provided by an embodiment of the present invention;

[0057] Figure 3 A signal flow diagram for a transmission phase consistency test provided by an embodiment of the present invention;

[0058] Figure 4 A signal flow diagram for a receiving phase consistency test provided by an embodiment of the present invention;

[0059] Figure 5 A signal flow diagram during a receiving gain test provided by an embodiment of the present invention.

[0060] Reference numerals: DETAILED DESCRIPTION

[0061] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] The relative arrangement of components and steps, the numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.

[0063] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0064] Additionally, descriptions of well-known structures, functions, and configurations may be omitted for clarity and conciseness.One of ordinary skill in the art will recognize that various changes and modifications may be made to the examples described herein without departing from the spirit and scope of the present disclosure.

[0065] Technologies, methods, and apparatus known to ordinary technicians in the relevant field may not be discussed in detail, but where appropriate, such technologies, methods, and apparatus should be considered part of the authorization specification.

[0066] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0067] Example 1

[0068] This embodiment provides a digital TR component automatic test system, including a test device, a switch matrix, a digital TR component, a digital signal processing device and an automatic test device, wherein the test device includes a vector network analyzer, a power meter and a signal source, wherein:

[0069] The switch matrix is ​​used to switch the digital TR component and the test equipment connected to the digital signal processing device according to the test item currently being executed, switch the reference channel connected between the digital signal processing device and the switch matrix, and switch the RF port currently being tested by the digital TR component;

[0070] The digital signal processing device is used to digitally process the radio frequency signal of the test device transmitted through the switch matrix according to the test item currently being executed, or convert the digital signal into a radio frequency signal and then send it to the corresponding test device through the switch matrix;

[0071] The digital TR component is used to digitize the RF signal of the test device transmitted through the switch matrix according to the test item currently being executed and send it to the digital signal processing device, or receive the digital signal from the digital signal processing device, convert it into a RF signal, and then send it to the corresponding test device through the switch matrix;

[0072] The automated test equipment is used to process the digital signal transmitted by the digital signal processing equipment or send the digital signal to the digital signal processing equipment according to the test item currently being executed.

[0073] Specifically, the switch matrix includes a power divider 6, a test equipment switching switch module, a mode selection switch 7, a channel selection switch 1, and a plurality of interface selection switches 2-5 corresponding to each test channel, wherein the vector network analyzer is connected to the input end of the power divider 6, the test equipment switching switch module is respectively connected to each test equipment, the output end of the power divider 6, the switch end of the channel selection switch 1, and the switch end of the mode selection switch 7, the enable end of the mode selection switch 7 is respectively connected to the DA end and the AD end of the digital signal processing device, the enable end of the channel selection switch 1 is respectively connected to the switch end of each interface selection switch 2-5, and the enable end of each interface selection switch 2-5 is respectively connected to the RF port of the digital TR component.

[0074] More specifically, the test equipment switching switch module includes a first selection switch 8, a second selection switch 9, a third selection switch 10, a fourth selection switch 11 and a fifth selection switch 12, wherein the second selection switch 9, the third selection switch 10 and the fourth selection switch 11 are all single-pole double-throw switches, including a switch end and two selection ends, the fifth selection switch 12 is a single-pole four-throw switch, and the first selection switch 8 is a single-pole three-throw switch, wherein,

[0075] The switch end of the first selection switch 8 is connected to the switch end of the mode selection switch 7, the enable end of the first selection switch 8 is respectively connected to the enable end of the fourth selection switch 11, the enable end of the second selection switch 9 and the output end of the power divider 6, the switch end of the second selection switch 9 is connected to the switch end of the fifth selection switch 12, the enable end of the third selection switch 10 is respectively connected to the output end of the power divider 6 and the enable end of the second selection switch 9, the switch end of the third selection switch 10 is connected to the switch end of the channel selection switch 1, the switch end of the fourth selection switch 11 is connected to the P1 end of the vector network analyzer, the enable end of the fourth selection switch 11 is respectively connected to the input end of the power divider 6 and the enable end of the first selection switch 8, and the enable end of the fifth selection switch 12 is respectively connected to the P2 port of the vector network analyzer, the power meter, the signal source and the spectrum analyzer.

[0076] If the test item currently being executed is a transmission gain test, the automated test equipment is used to generate the beam weight corresponding to the current tested channel of the digital TR component, and send the beam weight and frequency parameters to the digital signal processing device;

[0077] The switch matrix operates to switch the test equipment connected to the digital TR component to a power meter;

[0078] The digital signal processing device is used to generate baseband IQ point frequency data according to the received beam weight and frequency parameters, package the baseband IQ point frequency data and send it to the digital TR component, and convert the baseband IQ point frequency data into RF analog signals and send them to the power meter through the switch matrix;

[0079] The digital TR component is used to process the baseband IQ frequency data to obtain the RF signal, and then send the RF signal to the power meter through the switch matrix switching port;

[0080] The power meter is used to compare the received RF analog signal with the RF signal to obtain the transmission gain test result.

[0081] like Figure 2 As shown in the figure, if the test item currently being executed is the transmission gain test, the signal flow is shown by the dotted line in the figure, and the action process of the switch matrix is:

[0082] Switch the fifth selection switch 12 to the gate end connected to the power meter, switch the second selection switch 9 to the gate end connected to the first selection switch 8, and switch the first selection switch 8 to the gate end connected to the second selection switch 9;

[0083] Switch the mode selection switch 7 to the enable end connected to the transmit reference channel, so that the radio frequency signal is transmitted to the power meter through the switch matrix along the transmit reference channel;

[0084] Switch the second selection switch 9 to the gating end connected to the third selection switch 10, and switch the third selection switch 10 to the gating end connected to the second selection switch 9, so that the RF signal sent by the digital TR component is transmitted to the power meter along the third selection switch 10 and the second selection switch 9;

[0085] Channel selection switch 1 is used to select the current test channel of the digital TR component;

[0086] The interface selection switch 2 is used to select the current test interface in the current test channel, and the radio frequency signal is transmitted to the switch matrix along the selected current test channel and the current test interface.

[0087] If the test item currently being executed is a transmit phase consistency test, the automated test equipment is used to generate the beam weight corresponding to the current tested channel of the digital TR component, and send the beam weight and frequency parameters to the digital signal processing device;

[0088] The switch matrix operates to switch the test equipment connected to the digital TR component to the vector network analyzer;

[0089] The digital signal processing device is used to generate baseband IQ point frequency data according to the received beam weight and frequency parameters, package the baseband IQ point frequency data and send them to the digital TR component respectively, and convert the baseband IQ point frequency data into RF analog signals and send them to the P1 port of the vector network analyzer through the switch matrix;

[0090] The digital TR component is used to process the baseband IQ frequency data to obtain the RF signal and send the RF signal to the P2 port of the vector network analyzer;

[0091] The vector network analyzer is used to compare the received RF analog signal with the RF signal to obtain the transmit phase consistency test result.

[0092] like Figure 3 As shown in the figure, if the test item currently being executed is the transmit phase consistency test, the signal flow is shown by the dotted line in the figure, and the action process of the switch matrix is:

[0093] Switch the mode selection switch 7 to the gate end connected to the transmission reference channel, switch the first selection switch 8 to the gate end connected to the fourth conversion switch, and switch the fourth selection switch 11 to the gate end connected to the first selection switch 8, so that the RF analog signal is transmitted to the P1 port of the vector network analyzer along the transmission reference channel;

[0094] The third selection switch 10 is switched to the enable end connected to the second selection switch 9, the second selection switch 9 is switched to the enable end connected to the third selection switch 10, and the fifth selection switch 12 is switched to the enable end connected to the P2 port of the vector network analyzer, so that the RF signal sent by the digital TR component is sent to the P2 port of the vector network analyzer along the conduction path.

[0095] In the prior art, the transmission phase consistency test of the TR component is generally performed by testing the phase of the TR component channel to be tested through a vector network analyzer, and the test results are transmitted back to the mobile terminal for phase consistency test. However, the vector network analyzer generally sends RF analog signals. With the digitization of the TR component, the digital TR component outputs a baseband digital signal. The vector network analyzer cannot directly process the baseband digital signal. In order to achieve automated testing and the number of vector network analyzers used, one vector network analyzer is generally used, and only one test channel of the TR component is connected each time. When performing the transmission phase consistency test, the phase of other channels cannot be used as a reference for testing.

[0096] like Figure 4 As shown in the figure, if the test item currently being executed is the receiving phase consistency test, the signal flow is shown by the dotted line in the figure, and the action process of the switch matrix is:

[0097] Switch the fourth switch to the enable end connected to the power divider 6, and the vector network analyzer sends the radio frequency single tone signal to the power divider 6;

[0098] The power divider 6 divides the single-tone signal emitted by the vector network analyzer into a first radio frequency signal and a second radio frequency signal;

[0099] Switch the first selection switch 8 to the gate end connected to the power divider 6, and switch the third switch to the gate end connected to the power divider 6, so that the first RF signal is transmitted to the mode selection switch 7 along the first selection switch 8, and the second RF signal is transmitted to the channel selection switch 1 along the third switch;

[0100] Channel selection switch 1 is used to select the current test channel of the digital TR component;

[0101] The interface selection switch 2 is used to select the current test interface in the current test channel, and the second radio frequency signal is transmitted to the digital TR component along the selected current test channel and the current test interface.

[0102] The first RF signal is processed by the digital TR component to obtain the first baseband IQ signal, which is transmitted to the digital signal processing device through a high-speed digital optical fiber. After the digital signal processing device receives the second RF signal from the receiving reference channel, it is synchronously sampled and digitally down-converted inside the digital signal processing device to a second baseband IQ signal, wherein the baseband IQ data is a digital baseband signal after the RF signal is sampled and digitally down-converted, sampling is the digitization of the RF signal, and digital down-conversion is the baseband IQ signal after the digitized RF signal is extracted, filtered, and interpolated. Finally, the digital signal processing device transparently transmits the first baseband IQ signal and the second baseband IQ signal to the automatic test equipment (an industrial computer is used in this embodiment), and the automatic test software in the industrial computer calls the FFT algorithm, and performs FFT algorithm calculations on the first baseband IQ signal and the second baseband IQ signal, respectively, to obtain the phase PH1 of the channel interface corresponding to the digital TR component and the phase PH0 transmitted through the reference channel, and the received phase consistency test result is recorded as: PH1-PH0;

[0103] like Figure 5 As shown in the figure, if the test item currently being executed is the receiving gain test, the signal flow is shown by the dotted line in the figure, and the action process of the switch matrix is:

[0104] Switch the fifth selection switch 12 to the gate end connected to the signal source, switch the first selection switch 8 to the gate end connected to the second selection switch 9, and switch the second selection switch 9 to the gate end connected to the first selection switch 8, so that the RF signal output by the signal source is transmitted along the second switch and the first switch;

[0105] Switching the mode selection switch 7 to the strobe end connected to the receiving reference channel enables the radio frequency signal to be transmitted to the AD port of the digital signal processing device along the receiving reference channel;

[0106] If the frequency of the current RF signal is within the receiving range of the digital TR component, the switch of the second selection switch 9 is switched to the gating end connected to the third switch, and the switch of the third switch is switched to the gating end connected to the second selection switch 9, so that the RF signal is transmitted to the channel selection switch 1 along the second switch and the third switch;

[0107] Channel selection switch 1 is used to select the current test channel of the digital TR component;

[0108] The interface selection switch 2 is used to select the current test interface in the current test channel, and the radio frequency signal is transmitted to the digital TR component along the selected current test channel and the current test interface.

[0109] The signal source outputs a single-tone signal with a frequency of F0 and a power of P0 to the RF port of the digital TR component; the digital TR component outputs baseband IQ data to the digital signal processing device through a high-speed digital optical fiber; the digital signal processing device transparently transmits the baseband IQ data to the industrial computer, and the automatic test software calls the FFT algorithm to calculate the amplitude P1 of the baseband IQ data; the receiving gain is recorded: P1-P0+δ(input link loss).

[0110] Example 2

[0111] This embodiment provides a digital TR component automatic transmission test method, including the following steps:

[0112] S1. Load the test items of the transmit phase consistency test and the transmit gain test respectively;

[0113] S2. When the corresponding test item needs to be executed, the switch matrix, the digital TR component and the digital signal processing device are configured, and a switch action instruction for switching the test device is sent to the switch matrix, so that the test device corresponding to the current test item is connected to the digital TR component;

[0114] S3, when starting to execute the corresponding test item, a port switching instruction for switching the test channel and the test interface is sent to the switch matrix, so that a radio frequency port in a channel of the digital TR component is connected to the corresponding test equipment;

[0115] S4, the automatic test software generates the baseband frequency data required for the digital TR component test and packages the baseband frequency data and sends it to the digital TR component. At the same time, the baseband frequency data DA is converted into a radio frequency analog signal and sent to the corresponding test equipment through the switch matrix;

[0116] S5, the digital TR component obtains the RF signal after DA conversion of the baseband frequency data, and sends the RF signal to the corresponding test equipment through the switch matrix; the DA conversion includes DAC sampling, IQ modulation and up-conversion processing of the baseband IQ frequency data in sequence to obtain the RF analog signal.

[0117] S6. The test equipment measures the received RF analog signal and RF signal to obtain the transmission test result; the switch matrix is ​​controlled to switch to each RF port of the digital TR component in turn until the test of all RF ports of the digital TR component is completed.

[0118] When the test item of the transmission phase consistency test is executed, the test equipment is a vector network analyzer, the switch matrix is ​​switched to the vector network analyzer and connected to the digital TR component, and the specific test process of the automatic test software is as follows:

[0119] Step 1: Open the automatic test program, set the vector network analyzer to the receiver mode, and control the digital TR component and the digital signal processing device to switch the test mode to the transmission mode;

[0120] Step 2: The automatic test equipment generates the baseband frequency data required for the digital TR component test and sends the baseband frequency data to the digital TR component after packaging, and converts the baseband frequency data into a radio frequency analog signal. The specific process of converting the baseband frequency data into a radio frequency analog signal is to perform DAC sampling, IQ modulation and up-conversion processing on the baseband IQ frequency data in sequence to obtain a radio frequency analog signal; finally, the radio frequency analog signal is sent to a port of the vector network analyzer through the switch matrix;

[0121] The process of generating baseband frequency data is:

[0122] Determine the beam weight and select the carrier frequency based on the transmit phase consistency test item of the digital TR component;

[0123] The beam weight and carrier frequency are sent to a digital signal processing device, and the digital signal processing device performs IQ modulation on the baseband signal according to the selected carrier frequency to obtain baseband point frequency data.

[0124] Step 3: The digital TR component converts the baseband 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;

[0125] Step 4: The vector network analyzer compares the received RF analog signal with the RF signal to obtain a transmission phase consistency test result;

[0126] Step 5: Control the switch matrix to switch to each RF port of the digital TR component in turn, and send port switching instructions for switching the test channel and the test interface to the switch matrix, so that one RF port in 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.

[0127] When the test item of the transmission gain test is executed, the test equipment is, the switch matrix is ​​switched to the power meter and connected to the digital TR component, and the specific test process of the automatic test software is:

[0128] 1) The automatic test software generates the beam weights corresponding to the channel under test and sends the weights and frequency parameters to the digital signal processing device;

[0129] 2) After receiving the weight and frequency information, the digital signal processing device generates baseband IQ point frequency data (baseband IQ power P0) according to the frequency information, and packages it and sends it to the digital TR component;

[0130] 3) The digital TR component outputs the RF signal to the power meter, and the power P1 is directly measured;

[0131] 4) Record the transmission gain: P1-P0-δ (output link loss).

[0132] Example 3

[0133] This embodiment provides a digital TR component automatic reception test method, which is applied to the digital TR component automatic test system of embodiment 1, and includes the following steps:

[0134] S11, loading the test items of the receiving phase consistency test and the receiving gain test respectively;

[0135] S21, when it is necessary to execute the corresponding test item, configure the switch matrix, the digital TR component and the digital signal processing device, and send a device switching instruction to the switch matrix to switch the test device, so that the test device corresponding to the current test item is connected to the digital TR component;

[0136] S31, when starting to execute the corresponding test item, sending a port switching instruction for switching the test channel and the test interface to the switch matrix, so that a radio frequency port in a channel of the digital TR component is connected to the corresponding test equipment;

[0137] S41, the digital TR component and the digital signal processing device respectively receive the radio frequency signal sent by the test device through the switch matrix, and after digital processing, the digital signal is output to the automatic test software;

[0138] S51. The automatic test software calls the FFT algorithm to calculate the digital signal to obtain the test result corresponding to the corresponding test item, and repeats steps S31-S41 until the test of all RF ports of the digital TR component under the corresponding test item is completed.

[0139] When the test item of receiving phase consistency test is executed, the test equipment is a vector network analyzer, the switch matrix is ​​switched to the vector network analyzer and connected to the digital TR component, and the specific test process of the automatic test software is as follows:

[0140] S110, setting the test mode of the current digital TR component to receive phase consistency test and generating control parameters for sending, and the switch matrix, digital TR component and digital signal processing device perform mode configuration according to the control parameters;

[0141] S210, opening the automatic test program, sending a port switching instruction for switching the test channel and the test interface to the switch matrix, so that a radio frequency port in a channel of the digital TR component is connected to the vector network analyzer;

[0142] S310, receiving a first baseband signal and a second baseband signal transparently transmitted by a digital signal processing device, wherein the second baseband signal is an output signal corresponding to a currently turned-on RF port, and the first baseband signal is a reference signal sent by the digital signal processing device, and a frequency of the reference signal is the same as a frequency of an output signal of the digital TR component;

[0143] The process of obtaining the first baseband signal is:

[0144] S311, receiving a single tone signal sent by a vector network analyzer;

[0145] S312, the switch matrix splits the single-tone signal into a first analog signal and a second analog signal, and sends the second analog signal to the digital TR component along the currently turned-on RF port;

[0146] S313, the second analog signal is digitized by the digital TR component to obtain a second baseband signal;

[0147] S314: Output the second baseband signal to a digital signal processing device.

[0148] The specific process of obtaining the first baseband signal is:

[0149] S321, when the automatic test program is turned on, a switch switching instruction for mode selection switching is also sent to the switch matrix, so that the switch matrix sends the first analog signal to the AD port of the digital signal processing device;

[0150] S322, synchronously sampling the first analog signal to obtain sampling data;

[0151] S323, performing digital down-conversion processing on the sampled data to obtain a first baseband signal, wherein the digital down-conversion processing includes sequentially performing decimation, filtering, and interpolation processing.

[0152] S410, calling an FFT algorithm to calculate phase values ​​of the first baseband signal and the second baseband signal to obtain a first phase of the first baseband signal and a second phase of the second baseband signal;

[0153] S510, calculating the difference between the first phase and the second phase, and obtaining a receiving phase consistency test result of the RF port currently turned on by the digital TR component;

[0154] S610, repeat steps S210-S510 until the test of all RF ports of the digital TR component is completed.

[0155] When the test item of receiving gain test is executed, the test equipment is the signal source, and the switch matrix is ​​switched to connect the signal source and the digital TR component. The specific test process is as follows:

[0156] S100, the signal source outputs a single-tone RF signal with a frequency of F0 and a power of P0;

[0157] S200, the switch matrix receives a port switching instruction, firstly switches on the signal source and the reference receiving channel of the digital signal processing device, so that the single-tone RF signal is transmitted to the digital signal processing device along the reference receiving channel;

[0158] S300, the digital signal processing device performs digital processing on the single-tone radio frequency signal to obtain a first baseband IQ signal which is transmitted to the automatic test software;

[0159] S400, judging the frequency F0 of the first baseband IQ signal to determine whether the frequency F0 is within the receiving range of the digital TR component, and if so, sending a port switching instruction to the switch matrix to connect a radio frequency port in a channel of the digital TR component to the signal source;

[0160] S500: The signal source outputs a single-tone RF signal to the RF port currently turned on by the digital TR component, and the digital TR component digitally processes the single-tone RF signal to obtain a second baseband IQ signal and outputs it to the digital signal processing device;

[0161] S600, the automatic test software receives the transparently transmitted second baseband IQ signal from the digital signal processing device, calls the FFT algorithm, calculates the amplitudes of the first baseband IQ signal and the second baseband IQ signal, and obtains a receiving gain test result.

[0162] The digital processing process is: synchronously collect the single-tone RF signal to obtain sampling data, and digitally down-convert the sampling data to obtain a digital signal. The digital down-conversion process includes extraction, filtering and interpolation processing in sequence.

[0163] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. According to the technical essence of the present invention, within the spirit and principles of the present invention, any simple modification, equivalent replacement and improvement made to the above embodiment still falls within the protection scope of the technical solution of the present invention.

Claims

1. A digital TR component automatic test system, including a test device, characterized in that: It also includes a switch matrix, a digital TR component, a digital signal processing device, and an automatic test device. The test device includes a vector network analyzer, a power meter, and a signal source. The switch matrix is ​​used to switch the digital TR component and the test equipment connected to the digital signal processing device according to the test item currently being executed, switch the reference channel connected between the digital signal processing device and the switch matrix, and switch the RF port currently being tested by the digital TR component; The digital signal processing device is used to digitally process the radio frequency signal of the test device transmitted through the switch matrix according to the test item currently being executed, or convert the digital signal into a radio frequency signal and then send it to the corresponding test device through the switch matrix; The digital TR component is used to digitize the RF signal of the test device transmitted through the switch matrix according to the test item currently being executed and send it to the digital signal processing device, or receive the digital signal from the digital signal processing device, convert it into a RF signal, and then send it to the corresponding test device through the switch matrix; The automated test equipment is used to process the digital signal transmitted by the digital signal processing equipment or send the digital signal to the digital signal processing equipment according to the test item currently being executed.

2. The digital TR component automatic testing system according to claim 1, characterized in that: The switch matrix includes a power divider, a test equipment switching switch module, a mode selection switch, a channel selection switch and a plurality of interface selection switches corresponding to each test channel, wherein the vector network analyzer is connected to the input end of the power divider, the test equipment switching switch module is respectively connected to each test equipment, the output end of the power divider, the switch end of the channel selection switch and the switch end of the mode selection switch, the enable end of the mode selection switch is respectively connected to the DA end and the AD end of the digital signal processing device, the enable end of the channel selection switch is respectively connected to the switch end of each interface selection switch, and the enable end of each interface selection switch is respectively connected to the RF port of the digital TR component.

3. The digital TR component automatic testing system according to claim 2, characterized in that: The test equipment switching switch module includes a first selection switch, a second selection switch, a third selection switch, a fourth selection switch and a fifth selection switch, wherein the second selection switch, the third selection switch and the fourth selection switch all adopt a single-pole double-throw switch, including a switch end and two selection ends, the fifth selection switch adopts a single-pole four-throw switch, and the first selection switch adopts a single-pole three-throw switch, wherein, The switch end of the first selection switch is connected to the switch end of the mode selection switch, the enable end of the first selection switch is respectively connected to the enable end of the fourth selection switch, the enable end of the second selection switch and the output end of the power divider, the switch end of the second selection switch is connected to the switch end of the fifth selection switch, the enable end of the third selection switch is respectively connected to the output end of the power divider and the enable end of the second selection switch, the switch end of the third selection switch is connected to the switch end of the channel selection switch, the switch end of the fourth selection switch is connected to the P1 end of the vector network analyzer, the enable end of the fourth selection switch is respectively connected to the input end of the power divider and the enable end of the first selection switch, and the enable end of the fifth selection switch is respectively connected to the P2 port of the vector network analyzer, the power meter, the signal source and the spectrum analyzer.

4. The digital TR component automatic testing system according to claim 3, characterized in that: If the test item currently being executed is a transmission gain test, the automated test equipment is used to generate the beam weight corresponding to the current tested channel of the digital TR component, and send the beam weight and frequency parameters to the digital signal processing device; The switch matrix operates, switching the test equipment connected to the digital TR component to a power meter; The digital signal processing device is used to generate baseband IQ point frequency data according to the received beam weight and frequency parameters, package the baseband IQ point frequency data and send it to the digital TR component, and convert the baseband IQ point frequency data into RF analog signals and send them to the power meter through the switch matrix; The digital TR component is used to process the baseband IQ frequency data to obtain the RF signal, and then send the RF signal to the power meter through the switch matrix switching port; The power meter is used to compare the received RF analog signal with the RF signal to obtain the transmission gain test result.

5. The digital TR component automatic testing system according to claim 4, characterized in that: If the test item currently being executed is the transmit gain test, the action process of the switch matrix is: Switching the fifth selection switch to the gate end connected to the power meter, switching the second selection switch to the gate end connected to the first selection switch, and switching the first selection switch to the gate end connected to the second selection switch; Switching the mode selection switch to the enable end connected to the transmit reference channel, so that the radio frequency signal is transmitted to the power meter through the switch matrix along the transmit reference channel; Switch the second selection switch to the gate end connected to the third selection switch, and switch the third selection switch to the gate end connected to the second selection switch, so that the radio frequency signal sent by the digital TR component is transmitted to the power meter along the third selection switch and the second selection switch; The channel selection switch is used to select the current test channel of the digital TR component; The interface selection switch is used to select the current test interface in the current test channel, and the radio frequency signal is transmitted to the switch matrix along the selected current test channel and the current test interface.

6. The digital TR component automatic testing system according to claim 3, characterized in that: If the test item currently being executed is a transmit phase consistency test, the automated test equipment is used to generate the beam weight corresponding to the current tested channel of the digital TR component, and send the beam weight and frequency parameters to the digital signal processing device; The switch matrix operates to switch the test equipment connected to the digital TR component to the vector network analyzer; The digital signal processing device is used to generate baseband IQ point frequency data according to the received beam weight and frequency parameters, package the baseband IQ point frequency data and send them to the digital TR component respectively, and convert the baseband IQ point frequency data into RF analog signals and send them to the P1 port of the vector network analyzer through the switch matrix; The digital TR component is used to process the baseband IQ frequency data to obtain the RF signal and send the RF signal to the P2 port of the vector network analyzer; The vector network analyzer is used to compare the received RF analog signal with the RF signal to obtain the transmit phase consistency test result.

7. The digital TR component automatic testing system according to claim 6, characterized in that: If the test item currently being executed is the transmit phase consistency test, the action process of the switch matrix is: Switch the mode selection switch to the gate end connected to the transmission reference channel, switch the first selection switch to the gate end connected to the fourth conversion switch, and switch the fourth selection switch to the gate end connected to the first selection switch, so that the RF analog signal is transmitted to the P1 port of the vector network analyzer along the transmission reference channel; Switch the third selection switch to the enable end connected to the second selection switch, switch the second selection switch to the enable end connected to the third selection switch, and switch the fifth selection switch to the enable end connected to the P2 port of the vector network analyzer, so that the RF signal sent by the digital TR component is sent to the P2 port of the vector network analyzer along the conduction path.

8. The digital TR component automatic testing system according to claim 3, characterized in that: If the test item currently being executed is the receive phase consistency test, the action process of the switch matrix is: Switching the fourth switch to the enable end connected to the power divider, the vector network analyzer sends the radio frequency single tone signal to the power divider; The power divider divides the single-tone signal sent by the vector network analyzer into a first radio frequency signal and a second radio frequency signal; Switch the first selection switch to the gate end connected to the power divider, and switch the third switch to the gate end connected to the power divider, so that the first radio frequency signal is transmitted to the mode selection switch along the first selection switch, and the second radio frequency signal is transmitted to the channel selection switch along the third switch; The channel selection switch is used to select the current test channel of the digital TR component; The interface selection switch is used to select the current test interface in the current test channel, and the second radio frequency signal is transmitted to the digital TR component along the selected current test channel and the current test interface.

9. A digital TR component automatic testing method, applied to a digital TR component automatic testing system as claimed in claim 1, characterized in that: An automatic launch test method is included, which specifically includes the following steps: S1. Load the test items of the transmit phase consistency test and the transmit gain test respectively; S2. When the corresponding test item needs to be executed, the switch matrix, the digital TR component and the digital signal processing device are configured, and a switch action instruction for switching the test device is sent to the switch matrix, so that the test device corresponding to the current test item is connected to the digital TR component; S3, when starting to execute the corresponding test item, a port switching instruction for switching the test channel and the test interface is sent to the switch matrix, so that a radio frequency port in a channel of the digital TR component is connected to the corresponding test equipment; S4, the automatic test software generates the baseband frequency data required for the digital TR component test and packages the baseband frequency data and sends it to the digital TR component, and at the same time converts the baseband frequency data into a radio frequency analog signal and sends it to the corresponding test equipment through the switch matrix; S5, the digital TR component converts the baseband frequency data to obtain a radio frequency signal, and sends the radio frequency signal to the corresponding test equipment through the switch matrix; S6. The test equipment performs measurements based on the received RF analog signal and RF signal to obtain the transmission test results; the switch matrix is ​​controlled to switch to each RF port of the digital TR component in turn until the test of all RF ports of the digital TR component is completed.

10. A digital TR component automatic testing method, applied to a digital TR component automatic testing system as claimed in claim 1, characterized in that: An automatic receiving test method is included, which specifically includes the following steps: S11, loading the test items of the receiving phase consistency test and the receiving gain test respectively; S21, when it is necessary to execute the corresponding test item, configure the switch matrix, the digital TR component and the digital signal processing device, and send a device switching instruction to the switch matrix to switch the test device, so that the test device corresponding to the current test item is connected to the digital TR component; S31, when starting to execute the corresponding test item, sending a port switching instruction for switching the test channel and the test interface to the switch matrix, so that a radio frequency port in a channel of the digital TR component is connected to the corresponding test equipment; S41, the digital TR component and the digital signal processing device respectively receive the radio frequency signal sent by the test device through the switch matrix, and after digital processing, the digital signal is output to the automatic test software; S51. The automatic test software calls the FFT algorithm to calculate the digital signal to obtain the test result corresponding to the corresponding test item, and repeats steps S31-S41 until the test of all RF ports of the digital TR component under the corresponding test item is completed.

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