Radio frequency test circuit, radio frequency test system and radio frequency test method

Abstract

The embodiment of the invention provides a radio frequency test circuit, a radio frequency test system and a radio frequency test method, and relates to the technical field of terminals. The radio frequency test system can comprise a radio frequency control system, and the radio frequency control system can configure test frequency bands, test items and the like for a plurality of to-be-tested devices, so that the radio frequency test system can support the test of the plurality of to-be-tested devices, a test instrument is fully utilized, and the test efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of terminal technology, and in particular to a radio frequency test circuit, a radio frequency test system and a radio frequency test method. Background Art

[0002] Radio frequency (RF) conduction testing is a process of measuring and verifying the high-frequency alternating electromagnetic wave characteristics of electronic equipment. RF conduction testing is used to test the ability of electronic equipment to transmit, receive, and transmit signals within a specific frequency band, so that the electronic equipment can effectively resist interference from other devices or itself while having sufficient communication capabilities.

[0003] It is understandable that a set of RF conduction test system can include all test instruments required to complete the test of the device under test, such as test instruments including comprehensive tester, spectrum analyzer, signal generator, etc. However, currently a set of RF conduction test system can only support the test of one electronic device at a time, and some test instruments themselves can provide multiple test ports. This makes the test instruments not fully utilized, the utilization rate of the test instruments is not high, and the test efficiency is low. Summary of the invention

[0004] The embodiments of the present application provide a RF test circuit, a RF test system, and a RF test method. The RF test system may include a RF test circuit. The RF test circuit can configure test frequency bands and test items for multiple devices under test, so that the RF test system can support testing of multiple devices under test, thereby making full use of test instruments and improving test efficiency.

[0005] In a first aspect, an embodiment of the present application provides a radio frequency test circuit.

[0006] The radio frequency test circuit may include a radio frequency connection unit. The radio frequency connection unit includes a plurality of first ports, a plurality of second ports, and at least one third port; wherein the plurality of first ports are used to connect to a plurality of devices under test, the plurality of second ports are used to connect to a plurality of ports of the test device, the test device is used to perform radio frequency tests on the plurality of devices under test, and the at least one third port is used to connect to at least one auxiliary device, the auxiliary device including one or more of the following: a load, a filtering device, and a signal generating device. The radio frequency connection unit is used to transmit the signals obtained from the plurality of first ports to the plurality of second ports when at least one third port is connected to a load; and / or, the radio frequency connection unit is used to transmit the signals obtained from the plurality of first ports to the third port when at least one third port is connected to a filtering device, and after filtering by the filtering device, transmit the filtered signals to the plurality of second ports; and / or, the radio frequency connection unit is used to transmit the signals obtained from the third port to the plurality of first ports when at least one third port is connected to a signal generating device, and after the signals of the third port act on the devices under test of the plurality of first ports, transmit the signals obtained from the plurality of first ports to the plurality of second ports. For different test items, the auxiliary devices connected to the radio frequency connection unit may be different. In this way, according to different test items, the RF test circuit can flexibly control the devices and interfaces connected to each port, perform different test tasks for multiple devices under test, and realize flexible configuration of RF testing.

[0007] In a possible implementation, the RF connection unit further includes a plurality of couplers and at least one first functional power divider; wherein the input ends of the plurality of couplers are used to connect to the plurality of first ports, the output ends of the plurality of couplers are used to connect to the plurality of second ports, and the coupling ends of the plurality of couplers are used to connect to the at least one first functional power divider; and the at least one first functional power divider is also used to connect to at least one third port. When at least one first functional power divider is connected to a load, the plurality of couplers are used to transmit the signal obtained from the input end to the output end; and / or, when at least one first functional power divider is connected to a filtering device, the plurality of couplers are used to transmit the signal obtained from the input end to the coupling end, and after filtering by the filtering device, the filtered signal is transmitted to the output end; and / or, when at least one first functional power divider is connected to a signal generating device, the plurality of couplers are used to transmit the signal obtained from the coupling end to the input end, and after the signal at the coupling end acts on the device to be tested at the input end, the signal obtained from the input end is transmitted to the output end. The RF connection unit can be used to connect the test device with the device to be tested, realize the transmission of RF signals between the test device and the device to be tested, and thus perform RF testing. The RF connection unit includes RF devices such as power dividers and couplers. Among them, the power divider can combine multiple input signals into one output signal, or distribute one input signal to multiple output ports. The coupler can couple the interference signal generated by the signal source to the RF signal of the device under test, and make the RF signal only transmit in one direction, with better isolation. In this way, the switching of the test path in the RF connection unit can be better realized, increasing the flexibility of the test.

[0008] In one possible implementation, the multiple first ports include multiple 4G ports and multiple 5G ports, the multiple 4G ports are used to receive 4G signals of multiple devices under test, and the multiple 5G ports are used to receive 5G signals of multiple devices under test, and the multiple second ports include multiple 4G device ports and multiple 5G device ports, the multiple 4G device ports are used to connect to the multiple 4G ports of the test device, and the multiple 5G device ports are used to connect to the multiple 5G ports of the test device. A radio frequency connection unit is used to transmit signals obtained from multiple 4G ports to multiple 4G device ports, and / or transmit signals obtained from multiple 5G ports to multiple 5G device ports when at least one third port is connected to a load; and / or, a radio frequency connection unit is used to transmit signals obtained from multiple 4G ports to the third port when at least one third port is connected to a filtering device, and transmit the filtered signals to multiple 4G device ports after filtering by the filtering device, and / or transmit signals obtained from multiple 5G ports to the third port, and transmit the filtered signals to multiple 5G device ports after filtering by the filtering device; and / or, a radio frequency connection unit is used to transmit signals obtained from the third port to multiple 4G ports when at least one third port is connected to a signal generating device, and after the signals of the third port act on the devices to be tested of the multiple 4G ports, transmit the signals obtained from the multiple 4G ports to the multiple 4G device ports, and / or transmit the signals obtained from the third port to multiple 5G ports, and after the signals of the third port act on the devices to be tested of the multiple 5G ports, transmit the signals obtained from the multiple 5G ports to the multiple 5G device ports. The multiple 4G device ports are used to connect to the multiple 4G ports of the test device, and the multiple 5G device ports are used to connect to the multiple 5G ports of the test device. In this way, through the control of the RF connection unit, the multiple ports of the test device can be connected to different devices under test, thereby improving the utilization rate of the test device.

[0009] In a possible implementation, the plurality of first ports include a first 4G port, a second 4G port, a third 4G port, a fourth 4G port, a first 5G port, a second 5G port, a third 5G port, and a fourth 5G port; the plurality of second ports include a first 4G device port, a second 4G device port, a third 4G device port, a fourth 4G device port, a first 5G device port, a second 5G device port, a third 5G device port, and a fourth 5G device port; the plurality of couplers include a first coupler, a second coupler, a third coupler, a fourth coupler, a fifth coupler, a sixth coupler, a seventh coupler, and an eighth coupler. Among them, the input end of the first coupler is used to connect to the first 4G port, and the output end of the first coupler is used to connect to the first 4G device port; the input end of the second coupler is used to connect to the second 4G port, and the output end of the second coupler is used to connect to the second 4G device port; the input end of the third coupler is used to connect to the third 4G port, and the output end of the third coupler is used to connect to the third 4G device port; the input end of the fourth coupler is used to connect to the fourth 4G port, and the output end of the fourth coupler is used to connect to the fourth 4G device port. The input end of the fifth coupler is used to connect to the first 5G port, and the output end of the fifth coupler is used to connect to the first 5G device port; the input end of the sixth coupler is used to connect to the second 5G port, and the output end of the sixth coupler is used to connect to the second 5G device port; the input end of the seventh coupler is used to connect to the third 5G port, and the output end of the seventh coupler is used to connect to the third 5G device port; the input end of the eighth coupler is used to connect to the fourth 5G port, and the output end of the eighth coupler is used to connect to the fourth 5G device port. Each coupler can be connected to a 5G NR port or a 4GLTE port for connecting to the device under test; the coupler can also be connected to an instrument port for connecting to the test equipment. Each coupler can also be used to connect to an auxiliary device or a load. In this way, the coupler can couple the interference signal generated by the signal source to the RF signal of the device under test, and make the RF signal transmitted in only one direction, with good isolation.

[0010] In one possible implementation, the RF connection unit also includes multiple couplers, at least one first functional power divider and multiple second functional power dividers; wherein the multiple second functional power dividers are used to connect to the multiple first ports, the input ends of the multiple couplers are used to connect to the multiple second functional power dividers, the output ends of the multiple couplers are used to connect to the multiple second ports, the coupling ends of the multiple couplers are used to connect to at least one first functional power divider, and the at least one first functional power divider is also used to connect to at least one third port. In the case where at least one first functional power divider is connected to a load, multiple second functional power dividers are used to merge the signals obtained from multiple first ports, and multiple couplers are used to transmit the merged signals to the output end; and / or, in the case where at least one first functional power divider is connected to a filtering device, multiple second functional power dividers are used to merge the signals obtained from multiple first ports, and multiple couplers are used to transmit the merged signals to the coupling end, and after filtering by the filtering device, the filtered signals are transmitted to the output end; and / or, in the case where at least one first functional power divider is connected to a signal generating device, multiple couplers are used to transmit the signals obtained from the coupling end to multiple second functional power dividers, and after the signals of the multiple second functional power dividers act on the device to be tested, the signals obtained from the multiple second functional power dividers are transmitted to the output end, and the multiple second functional power dividers are used to merge the signals obtained from the multiple first ports. The RF connection unit can be used to connect the test device to the device to be tested, realize the transmission of RF signals between the test device and the device to be tested, and thus perform RF testing. The RF connection unit includes RF devices such as the first functional power divider, the second functional power divider and the coupler. Among them, the power divider can combine multiple input signals into one output signal, or distribute one input signal to multiple output ports. The coupler can couple the interference signal generated by the signal source to the RF signal of the device under test, and make the RF signal only transmit in one direction, with better isolation. In this way, the switching of the test path in the RF connection unit can be better realized, increasing the flexibility of the test.

[0011] In one possible implementation, the multiple first ports include multiple first 4G ports, multiple second 4G ports, multiple third 4G ports, multiple fourth 4G ports, multiple first 5G ports, multiple second 5G ports, multiple third 5G ports, and multiple fourth 5G ports; the multiple second ports include a first 4G device port, a second 4G device port, a third 4G device port, a fourth 4G device port, a first 5G device port, a second 5G device port, a third 5G device port, and a fourth 5G device port; the multiple couplers include a first coupler, a second coupler, a third coupler, a fourth coupler, a fifth coupler, a sixth coupler, a seventh coupler, and an eighth coupler; and the multiple second function power splitters include a first power splitter, a second power splitter, a third power splitter, a fourth power splitter, a fifth power splitter, a sixth power splitter, a seventh power splitter, and an eighth power splitter. Among them, the first power splitter is used to connect to multiple first 4G ports, the input end of the first coupler is used to connect to the first power splitter, and the output end of the first coupler is used to connect to the first 4G device port; the second power splitter is used to connect to multiple second 4G ports, the input end of the second coupler is used to connect to the second power splitter, and the output end of the second coupler is used to connect to the second 4G device port; the third power splitter is used to connect to multiple third 4G ports, the input end of the third coupler is used to connect to the third power splitter, and the output end of the third coupler is used to connect to the third 4G device port; the fourth power splitter is used to connect to multiple fourth 4G ports, the input end of the fourth coupler is used to connect to the fourth power splitter, and the output end of the fourth coupler is used to connect to the fourth 4G device port. The fifth power splitter is used to connect to multiple first 5G ports, the input end of the fifth coupler is used to connect to the fifth power splitter, and the output end of the fifth coupler is used to connect to the first 5G device port; the sixth power splitter is used to connect to multiple second 5G ports, the input end of the sixth coupler is used to connect to the sixth power splitter, and the output end of the sixth coupler is used to connect to the second 5G device port; the seventh power splitter is used to connect to multiple third 5G ports, the input end of the seventh coupler is used to connect to the seventh power splitter, and the output end of the seventh coupler is used to connect to the third 5G device port; the eighth power splitter is used to connect to multiple fourth 5G ports, the input end of the eighth coupler is used to connect to the eighth power splitter, and the output end of the eighth coupler is used to connect to the fourth 5G device port. It can be understood that the second functional power splitter can merge multiple 4G signals, or merge multiple 5G signals, so as to comprehensively test the 4G communication performance and 5G communication performance of the device under test.

[0012] In a possible implementation, when the first test item is tested using a radio frequency test circuit, at least one third port is used to connect to a load; wherein the first test item includes one or more of the following test items: a maximum power test item, a spectrum mask test item, an adjacent channel leakage ratio test item, a sensitivity test item, a frequency error test item, and an occupied bandwidth test item. The maximum power test item can be used to test the maximum transmission power of the device under test, etc. The spectrum mask test item can be used to test whether the signal transmitted by the device under test is within the specified working frequency band. The adjacent channel leakage ratio test item can be used to measure the interference caused by the device under test to the adjacent frequency band. The sensitivity test item can be used to test the minimum input power of the device under test. The frequency error test item can be used to test the deviation between the actual working frequency of the device under test and the expected frequency. The occupied bandwidth test item can be used to test the frequency range of the signal transmitted by the device under test. By performing these tests on the device under test, the transmission quality of the radio frequency signal can be better controlled and the communication performance of the electronic device can be improved.

[0013] In a possible implementation, when the second test item is tested using a radio frequency test circuit, at least one third port is used to connect to an auxiliary device; wherein the second test item includes one or more of the following test items: a power spectrum density test item, a transmission spurious test item, a reception spurious test item, a sideband characteristic test item, an adjacent channel interference test item, a blocking interference test item, and an intermodulation interference test item. The power spectrum density test item can be used to evaluate the spectrum characteristics of the signal so that it does not interfere with other frequency bands. The transmission spurious test item can be used to test the transmission spurious signals that can interfere with other electronic devices and communication systems. The reception spurious test item can be used to test the unnecessary signals that may cause misunderstandings by the receiver. The sideband characteristic test item can be used to test the modulation performance and spectrum purity of the device under test. The adjacent channel interference test item can be used to test the interference caused by the received signal of the device under test to the adjacent channel. The blocking interference test item can be used to test the performance of the receiver of the device under test when a strong interference signal exists. The intermodulation interference test item can be used to test the ability of the device under test to generate nonlinear distortion. By performing these tests on the device under test, the transmission quality of the radio frequency signal can be better controlled and the communication performance of the electronic device can be improved.

[0014] In a second aspect, an embodiment of the present application provides a radio frequency testing system.

[0015] The RF test system includes an RF test circuit, multiple devices under test, and a test device. The RF test circuit is used to connect to the multiple devices under test and to connect to the test device, so that the test device can perform RF tests on the multiple devices under test based on pre-configured test information. Test information can be pre-configured in the RF test system. In this way, based on the pre-configured test information, automated testing and test data collection of multiple devices under test can be achieved, so that the RF test system can support testing of multiple devices under test each time, thereby making full use of the multiple ports provided by the test device and improving RF test efficiency.

[0016] In one possible implementation, the RF test system further includes a main control unit; the main control unit is used to connect to multiple devices under test, configure test information of the multiple devices under test, and instruct the RF test system to perform RF testing based on the configured test information. After the test equipment, the RF test circuit, the multiple devices under test, and the main control unit are connected, the RF test system can be networked through the network cell. Therefore, the test tasks can be configured in the test software installed in the main control unit, and the automated testing and test data collection of multiple devices under test can be realized, thereby improving the efficiency of RF testing.

[0017] In a possible implementation, the test information includes one or more of the following information: test name, test environment, test execution machine information, networking mode of the target device under test, test scenario of the target device under test, test items of the target device under test, ports of the RF test circuit used when testing the target device under test, ports of the test device used when testing the target device under test; wherein the multiple devices under test include the target device under test. In this way, by configuring the test information through the main control system, different test tasks can be issued to multiple devices under test, thereby realizing flexible configuration of RF testing.

[0018] In a possible implementation, when the RF test system is used to test the second test item, the RF test system further includes at least one auxiliary device; wherein the at least one auxiliary device includes one or more of the following: load, filtering device, signal generating device, and the second test item includes one or more of the following test items: power spectrum density test item, transmission spurious test item, reception spurious test item, sideband characteristic test item, adjacent channel interference test item, blocking interference test item, intermodulation interference test item. In this way, by testing the second test item on the device under test, the transmission quality of the RF signal can be better controlled and the communication performance of the electronic device can be improved.

[0019] In a third aspect, an embodiment of the present application provides a radio frequency testing method, which is applied to a radio frequency testing circuit. The method includes:

[0020] Based on the test information of multiple pre-configured devices under test, the RF signal of the target device under test is received; wherein the multiple devices under test include the target device under test; the RF signal of the target device under test is transmitted to the test device; based on the test device, the RF signal of the target device under test is tested. In this way, the RF test circuit can configure the test frequency bands and test items for multiple devices under test, so that the RF test system can support the test of multiple devices under test each time, thereby making full use of the test equipment and improving the efficiency of RF testing.

[0021] In a possible implementation, before receiving the RF signal of the target device under test, it also includes: networking the RF test system with multiple devices under test, test equipment, and a main control unit; wherein the RF test circuit is connected to multiple devices under test, and is connected to the test equipment, the main control unit is connected to multiple devices under test, and the main control unit is used to configure the test information of the multiple devices under test, and instruct the RF test system to perform RF tests on the multiple devices under test based on the configured test information. After the RF test circuit completes the RF test system networking with multiple devices under test, the test equipment, and the main control unit, the RF test system networking can be performed through the network cell. Therefore, the test tasks can be configured in the test software installed in the main control unit to realize the automated testing and test data collection of multiple devices under test.

[0022] In a possible implementation, based on the test information of multiple pre-configured devices under test, the radio frequency signal of the target device under test is received, including: based on the test information of multiple devices under test pre-configured in the main control unit, determining the interface connection mode with the target device under test and the interface connection mode with the test device; based on the interface connected to the target device under test, receiving the radio frequency signal of the target device under test; based on the test device, implementing the test of the radio frequency signal of the target device under test, including: based on the test device, testing the target test items of the target device under test, the test information of multiple devices under test includes the target test items of the target device under test. The test device can test and analyze the radio frequency signal, which can specifically include the test and analysis of the radio frequency signal in the first test item and the second test item. In this way, the ability of the device under test in terms of signal transmission, reception, and transmission can be tested, so that the device under test can effectively resist interference caused by other devices or itself while having sufficient communication capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of testing a transmitter and a receiver in an RF test provided in an embodiment of the present application;

[0024] Figure 2 A schematic diagram of a comprehensive tester provided in an embodiment of the present application for testing multiple devices under test;

[0025] Figure 3 A schematic diagram of equipment connection for a simple test item in an SA test provided in an embodiment of the present application;

[0026] Figure 4 A schematic diagram of equipment connection for complex test items in an SA test provided in an embodiment of the present application;

[0027] Figure 5 A schematic diagram of equipment connection for a simple test item in an NSA test provided in an embodiment of the present application;

[0028] Figure 6 A schematic diagram of equipment connection for a complex test item in an NSA test provided in an embodiment of the present application;

[0029] Figure 7 A schematic diagram of the internal circuit structure of an RF control system provided in an embodiment of the present application;

[0030] Figure 8 A schematic diagram of the internal circuit structure of another RF control system provided in an embodiment of the present application;

[0031] Fig. 9 A schematic diagram of a test task issuing interface provided in an embodiment of the present application;

[0032] Fig.10 A schematic diagram of a test task issuing interface 1000 of a test case 1 provided in an embodiment of the present application;

[0033] Fig.11 A circuit connection diagram of a test case 1 and a test case 2 provided in an embodiment of the present application;

[0034] Fig.12 A schematic diagram of a test task issuing interface 1200 of a test case 2 provided in an embodiment of the present application;

[0035] Fig.13 A schematic diagram of a test task issuing interface 1300 of a test case 3 provided in an embodiment of the present application;

[0036] Fig.14 A circuit connection diagram of a test case 3 provided in an embodiment of the present application;

[0037] Fig.15 A schematic diagram of a testing method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0038] In order to clearly describe the technical solutions of the embodiments of the present application, some terms and technologies involved in the embodiments of the present application are briefly introduced below:

[0039] 1. Terminology

[0040] In the embodiments of the present application, words such as "first" and "second" are used to distinguish the same or similar items with substantially the same functions and effects. For example, the first chip and the second chip are only used to distinguish different chips, and their order is not limited. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit them to be different.

[0041] It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0042] In the embodiments of the present application, "at least one" refers to one or more, and "more than one" refers to two or more. "And / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent: the existence of A alone, the existence of A and B at the same time, and the existence of B alone, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b, or c can represent: a, b, c, ab, a--c, bc, or abc, where a, b, and c can be single or multiple.

[0043] RF conduction testing is a process of measuring and verifying the high-frequency alternating electromagnetic wave characteristics of electronic equipment. RF conduction testing is used to test the ability of electronic equipment to transmit, receive, and transmit signals within a specific frequency band, so that the electronic equipment can effectively resist interference from other devices or itself while having sufficient communication capabilities. For the sake of ease of description, RF conduction testing will be referred to as RF testing, and the electronic equipment to be tested will be referred to as equipment under test (EUT).

[0044] It is understandable that a set of RF test systems can include all the test instruments required to complete the test of the device under test, for example, the test instruments include a comprehensive tester, a spectrum analyzer, a signal generator, a filtering system, etc. Among them, the comprehensive tester integrates a variety of test functions and measurement tools, and can perform a variety of tests such as signal generation, modulation analysis, and power measurement. The spectrum analyzer can be referred to as a spectrum analyzer, which can perform a variety of tests such as signal strength, spectrum analysis, and interference detection. The signal generator can be referred to as a signal source, which can be used to provide interference signals to the test system. The filtering system can also be called a filter component or a filtering device. The filtering system can select the frequency of the radio frequency signal and enhance or suppress specific frequency components. These test instruments exchange information with the device under test through relevant communication protocols.

[0045] The device under test may include a transmitter and a receiver. The transmitter is used to transmit signals. For example, the transmitter can convert audio, video or data signals into radio frequency signals and send them out through an antenna to achieve wireless communication. The receiver is used to receive signals. For example, the receiver can receive radio frequency signals from a base station or other electronic devices and convert them into usable audio, video or data signals. In some scenarios, the transmitter can also be called a transmitter and the receiver can also be called a receiver.

[0046] For example, Figure 1 FIG. a is a schematic diagram of testing the transmitter of the device under test in RF testing, which is used to test the signal transmission capability of the device under test. Figure 1 FIG. 2 is a schematic diagram of testing the receiver of the device under test in RF testing, which is used to test the signal receiving capability of the device under test.

[0047] However, a test system can only support testing one device under test at a time. However, test instruments such as comprehensive testers can provide multiple test ports, which means that comprehensive testers and other test instruments are not fully utilized, the utilization rate of test instruments is not high, and the test efficiency is low. In addition, the test frequency band and test items need to be manually changed between different test items, which is time-consuming, labor-intensive and prone to errors.

[0048] In view of this, the test method provided in the embodiment of the present application may include an RF control system in the RF test system, and the RF control system can configure test frequency bands and test items for multiple devices under test, so that a set of RF test system can support testing multiple devices under test each time, thereby making full use of the test instruments and improving test efficiency.

[0049] It can be understood that the device under test of the embodiment of the present application can also be an electronic device in any form. For example, the electronic device may include a mobile phone, a tablet computer, a PDA, a laptop computer, a mobile Internet device (MID), a wearable device, a virtual reality (VR) device, an augmented reality (AR) device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical surgery, a wireless terminal in smart grid, a wireless terminal in transportation safety, a wireless terminal in smart city, a wireless terminal in smart home, a cellular phone, a cordless phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a personal digital assistant (PDA), etc. assistant, PDA), computing devices or other processing devices connected to a wireless modem, vehicle-mounted devices, electronic devices in a 5G network, or electronic devices in a future-evolved public land mobile network (PLMN), etc., but the embodiments of the present application are not limited to this.

[0050] In addition, in the embodiments of the present application, the device to be tested may also be an electronic device in the Internet of Things (IoT) system. IoT is an important part of the future development of information technology. Its main technical feature is to connect objects to the network through communication technology, thereby realizing an intelligent network that interconnects people and machines and things.

[0051] The device under test in the embodiments of the present application may also be referred to as: user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent or user device, etc.

[0052] The following specific embodiments are used to describe the method of the present application in detail. The following embodiments may be combined with each other or implemented independently, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0053] RF testing includes transmitter testing and receiver testing. In the embodiment of the present application, for transmitter testing, such as Figure 2 As shown in a, taking four devices under test as an example, the four devices under test can simultaneously send radio frequency signals to the ports of the comprehensive tester. Exemplarily, the test process of the transmitter test may include the following steps:

[0054] S1. Configure test instruments and launch control instructions.

[0055] Configuring the test instrument can be understood as configuring all test instruments involved in the test. Exemplarily, in some RF test items, the test instrument may include a comprehensive tester, such as the relatively simple test items mentioned below. In other RF test items, in addition to the comprehensive tester, the test instrument may also include a signal source, a spectrum analyzer, and / or a filtering system, such as the relatively complex test items mentioned below.

[0056] Taking the comprehensive tester as an example, configuring the comprehensive tester can be understood as configuring configuration information on the comprehensive tester that matches the transmission signal of the device under test. For example, the configuration information includes but is not limited to one or more of the following information: signal type, signal frequency, modulation mode, signal bandwidth, RB position, etc.

[0057] After the comprehensive tester is configured, the comprehensive tester may send control instructions to the four devices to be tested and execute step S2.

[0058] S2. The comprehensive tester captures the RF signal.

[0059] The comprehensive tester can capture the radio frequency signals of the four devices under test and execute step S3 to analyze the radio frequency signals.

[0060] S3. The comprehensive tester analyzes the radio frequency signal.

[0061] The comprehensive tester can analyze the RF signal in the following relatively simple test items and relatively complex test items, so as to test the ability of the device under test in terms of signal transmission, reception, and transmission, so that the device under test can effectively resist the interference caused by other devices or itself while having sufficient communication capabilities.

[0062] It is understandable that signal processing includes demodulation of modulated signals, etc. And because the main control system is multi-threaded, it can perform signal processing synchronously.

[0063] S4. The comprehensive tester outputs the analysis results.

[0064] After analyzing the RF signal, the comprehensive tester can output the analysis results to obtain RF test data.

[0065] For receiver testing, such as Figure 2 As shown in b, the comprehensive tester can use full-duplex mode to send multiple RF signals to each device under test at one time, thereby completing the test of the receiver.

[0066] It is understandable that the test method of the embodiment of the present application can test two or more devices under test at the same time, and the specific number of devices under test that can be tested simultaneously is related to the ports provided by the measuring instrument. For example, the comprehensive tester can provide 4 fourth generation long term evolution (4G LTE) ports and 4 fifth generation new radio (5G NR) ports, so 4 devices under test can be tested at the same time. If the comprehensive tester can provide more 4G LTE ports and 5G NR ports, the embodiment of the present application can test more devices under test at the same time.

[0067] For ease of description, the following example takes the comprehensive tester providing 4 4G LTE ports and 4 5G NR ports and testing 4 devices under test at the same time.

[0068] RF testing can include cellular testing and short-range testing. Cellular testing includes 2G, 3G, 4G and 5G testing, and short-range testing includes Bluetooth, WiFi, ultra wideband (UWB), NFC and other tests. Taking 5G testing as an example, RF testing can include standalone (SA) testing and non-standalone (NSA) testing. SA testing can be understood as testing of 5G networks, which is independent of 4G LTE networks. NSA testing can be understood as using the infrastructure of 4G LTE networks to support testing of 5G networks, or as a comprehensive test of 4G LTE networks and 5G NR.

[0069] (1) SA test.

[0070] In SA testing, the test items can be associated with the test instrument, RF control system and four devices under test at the same time, so as to control the test frequency bands and test items of the four devices under test, achieve the purpose of traversing multiple test items and multiple frequency bands, and improve test efficiency.

[0071] The RF control system may include 4 5G NR ports and 4 5G instrument ports. Among them, the 4 5G NR ports include NR1 port, NR2 port, NR3 port and NR4 port respectively, and the 4 5G NR ports can be connected to 4 devices under test respectively. The 4 5G instrument ports include instrument 1 port, instrument 2 port, instrument 3 port and instrument 4 port respectively, and the 4 5G instrument ports can be connected to the 4 5G NR ports of the comprehensive tester respectively. In this way, through the control of the RF control system, the multiple ports of the comprehensive tester can be connected to different devices under test respectively, thereby improving the utilization rate of the comprehensive tester. The specific internal circuit structure of the RF control system can refer to the following Figure 7 The relevant description of the corresponding embodiments is not repeated here.

[0072] In one possible implementation, Figure 3 As shown in the figure, for relatively simple test items, the RF control system can connect the NR1 port of the comprehensive tester to the device under test 1, the NR2 port of the comprehensive tester to the device under test 2, the NR3 port of the comprehensive tester to the device under test 3, and the NR4 port of the comprehensive tester to the device under test 4. In this way, the comprehensive tester can test the four test devices respectively through the four 5G NR ports.

[0073] Relatively simple test items may include items that do not require the participation of other test instruments such as spectrum analyzers, filter systems, signal sources, etc. Relatively simple test items may include but are not limited to one or more of the following test items: maximum power, spectrum mask, adjacent channel leakage ratio (ACLR), sensitivity, frequency error, occupied bandwidth, etc.

[0074] Among them, the maximum power test item is used to test the maximum transmission power of the transmitter of the device under test, etc.

[0075] Spectrum mask test item: used to test whether the signal emitted by the transmitter of the device under test is within the specified working frequency band.

[0076] ACLR test item: used to test the extent to which the signal emitted by the transmitter of the device under test leaks into the adjacent channel outside the specified channel, thereby measuring the interference caused by the transmitter of the device under test to the adjacent frequency band outside its operating frequency band. For example, the higher the ACLR value, the less leakage in the adjacent channel and the better the performance of the device under test.

[0077] Sensitivity test item: It is used to test the minimum input power of the receiver of the device under test to detect and decode the signal. For example, the higher the sensitivity of the receiver, the stronger its ability to work at lower signal strength.

[0078] Frequency error test item: used to test the deviation between the actual operating frequency of the transmitter or receiver of the device under test and its nominal or expected frequency. The frequency error may be caused by factors such as manufacturing tolerance and temperature change of the device under test.

[0079] Occupied bandwidth test item: used to test the frequency range occupied by the signal emitted by the transmitter of the device under test in the spectrum.

[0080] like Figure 3 As shown, the four serial communication interfaces corresponding to the four devices under test can be connected to the main control system through the serial port expansion dock. In some scenarios, the serial communication interface can also be called a COM port. The serial port expansion dock is used to expand the number of serial ports of the main control device. The main control system can also be called a main control test computer or a main control computer. The main control system is any computer with test software installed. The test software is used to set the basic information of the test items, test configuration information, etc. In this way, the main control system can control which frequency bands and test items are tested for each device under test.

[0081] Exemplarily, device 1 under test is connected to the main control system through control com port 1; device 2 under test is connected to the main control system through control com port 2; device 3 under test is connected to the main control system through control com port 3; device 4 under test is connected to the main control system through control com port 4. In this way, through the configuration of the main control system, different test tasks can be issued to the four devices under test, realizing flexible configuration of RF test.

[0082] Another possible implementation is Figure 4 As shown, for relatively complex test items, such as those that require the participation of other test instruments such as signal sources, filter systems and / or spectrum analyzers, the RF control system can be connected to the four 5GNR ports of the comprehensive tester, to the four devices under test, and to the ports of the signal source, filter system and / or spectrum analyzer. In this way, comprehensive testers and other test instruments can be used to test multiple devices under test for complex test items, thereby improving test efficiency.

[0083] Relatively complex test items may include but are not limited to one or more of the following test items: power spectral density (PSD), transmitted spurious signals, received spurious signals, sideband characteristics, adjacent channel interference, blocking interference, intermodulation interference, etc.

[0084] Among them, the PSD test item is used to test the power distribution of the signal transmitted by the transmitter of the device under test in the frequency domain, and evaluate the spectral characteristics of the signal so that it will not interfere with other frequency bands.

[0085] Spurious emission test items: used to test the transmitter of the device under test for unnecessary signals or unwanted RF energy outside its specified operating frequency band. These signals or energies may be caused by nonlinear effects, harmonic generation, frequency aliasing, etc. inside the device under test. These spurious emission signals may interfere with other electronic devices and communication systems. Therefore, in RF testing, these spurious emission signals need to be strictly controlled and measured.

[0086] Receive spurious test items: used to test the receiver of the device under test for unnecessary signals that respond outside its specified receiving frequency band. These unnecessary signals may cause the receiver to misunderstand or incorrectly process the received signal. Therefore, in RF testing, receive spurious signals need to be strictly controlled and measured.

[0087] Sideband characteristic test item: used to test the modulation performance and spectrum purity of the transmitter or receiver of the device under test.

[0088] Adjacent channel interference test item: used to test the interference caused by the received signal of the device under test to the adjacent channel. This interference may affect the communication quality of the adjacent channel, resulting in data transmission errors, signal quality degradation and other problems. Therefore, in RF testing, adjacent channel interference testing is required.

[0089] Blocking interference test item: used to test the performance of the receiver of the device under test when a strong interference signal exists. It is understandable that the presence of a strong signal within the receiver's frequency range may cause the receiver's sensitivity to decrease, thus affecting the normal reception of the signal. Therefore, in RF testing, blocking interference testing is required.

[0090] Intermodulation interference test project: used to test the ability of the receiver of the device under test to generate nonlinear distortion when receiving multiple signals at the same time. It is understandable that due to the interaction of multiple signals in electronic equipment or systems, new frequency components may be generated outside the original signal frequency, thereby interfering with communication quality. Therefore, in RF testing, intermodulation interference testing is required.

[0091] It is understandable that the test instruments used for different test items may be the same or different. Exemplary, in a possible implementation, a spectrum analyzer is used when testing a PSD test item, a transmission spurious test item, a reception spurious test item, or a sideband characteristic test item. When testing an adjacent channel interference test item, a blocking interference test item, or an intermodulation interference test item, a signal source is used to output an interference signal through the signal source to perform the test. Optionally, when testing a transmission spurious test item, a filtering system may also be used to filter out the main frequency signal of the device under test through the filtering system, thereby performing a transmission spurious test.

[0092] Similarly, if Figure 4As shown, the four serial communication interfaces corresponding to the four devices under test can be connected to the main control system through the serial port expansion dock. Exemplarily, device under test 1 is connected to the main control system through the control COM port 1; device under test 2 is connected to the main control system through the control COM port 2; device under test 3 is connected to the main control system through the control COM port 3; device under test 4 is connected to the main control system through the control COM port 4. In this way, through the configuration of the main control system, different test tasks can be issued to the four devices under test, realizing flexible configuration of RF testing.

[0093] (2) NSA testing.

[0094] In NSA testing, test items can also be associated with test instruments, RF control systems and four devices under test at the same time, thereby controlling the test frequency bands and test items of the four devices under test, achieving the purpose of traversing multiple test items and multiple frequency bands and improving test efficiency.

[0095] Different from SA testing, the RF control system includes not only 4 5G NR ports and 4 5G instrument ports, but also 4 4G LTE ports and 4 4G instrument ports. Among them, the 4 4G LTE ports include LTE1 port, LTE2 port, LTE3 port and LTE4 port respectively, and the 4 4G LTE ports can also be connected to the 4 devices under test respectively. The 4 4G instrument ports include instrument 5 port, instrument 6 port, instrument 7 port and instrument 8 port respectively, and the 4 4G instrument ports can be connected to the 4 4G LTE ports of the comprehensive tester respectively. In this way, through the control of the RF control system, the 4 5GNR ports and 4 4G LTE ports of the comprehensive tester can be connected to different devices under test respectively. The specific internal circuit structure of the RF control system can refer to the following Figure 7 The relevant description of the corresponding embodiments is not repeated here.

[0096] In one possible implementation, Figure 5 As shown in the figure, for relatively simple test items, when testing 4G signals and 5G signals, the RF control system can connect the NR1 port and LTE1 port of the comprehensive tester to the device under test 1, the NR2 port and LTE2 port of the comprehensive tester to the device under test 2, the NR3 port and LTE3 port of the comprehensive tester to the device under test 3, and the NR4 port and LTE4 port of the comprehensive tester to the device under test 4. In this way, the comprehensive tester can perform non-independent networking tests on four test devices through four 5G NR ports and four 4G LTE ports.

[0097] Relatively simple test items may include testing the maximum power, spectrum mask, ACLR, sensitivity, frequency error, occupied bandwidth, etc. in the 5G frequency band, and also include testing the maximum power, spectrum mask, ACLR, sensitivity, frequency error, occupied bandwidth, etc. in the 4G frequency band. For the specific description of each test item, please refer to the relevant description in the above (1) SA test, which will not be repeated here.

[0098] like Figure 5 As shown, the four serial communication interfaces corresponding to the four devices under test can be connected to the main control system through the serial port expansion dock. The specific connection method can refer to the relevant description in the above (1) SA test, which will not be repeated here. In this way, through the configuration of the main control system, different test tasks can be issued to the four devices under test, realizing flexible configuration of RF testing.

[0099] Another possible implementation is Figure 6 As shown, for relatively complex test items, such as those that require the participation of other equipment such as signal sources, filter systems and / or spectrum analyzers, the RF control system can be connected to the four 5G NR ports and four 4G LTE ports of the comprehensive tester, to the four devices under test, and to the ports of the signal source, filter system and / or spectrum analyzer. In this way, the comprehensive tester can perform complex test items on multiple devices under test, thereby improving test efficiency.

[0100] Relatively complex test items may include testing PSD, transmission spurious, reception spurious, sideband characteristics, adjacent channel interference, blocking interference, intermodulation interference, etc. in the 5G frequency band, and also include testing PSD, transmission spurious, reception spurious, sideband characteristics, adjacent channel interference, blocking interference, intermodulation interference, etc. in the 4G frequency band. For the specific description of each test item, please refer to the relevant description in the above (1) SA test, which will not be repeated here.

[0101] Similarly, if Figure 6 As shown, the four serial communication interfaces corresponding to the four devices under test can be connected to the main control system through the serial port expansion dock. The specific connection method can refer to the relevant description in the above (1) SA test, which will not be repeated here. In this way, through the configuration of the main control system, different test tasks can be issued to the four devices under test, realizing flexible configuration of RF testing.

[0102] Figure 7 A schematic diagram showing the internal circuit structure of the RF control system.

[0103] The RF control system may include a radio frequency connection unit and a switch control unit. The radio frequency connection unit may also be referred to as a radio frequency unit, and the switch control unit may also be referred to as a switch unit.

[0104] The radio frequency unit can be used to connect a test instrument such as a comprehensive tester to the device under test, so as to realize the transmission of radio frequency signals between the test instrument such as the comprehensive tester and the device under test, thereby performing RF testing. The radio frequency unit may include radio frequency devices such as power dividers and couplers to realize the switching of test paths and increase test flexibility. The number of power dividers and couplers used can be set according to actual conditions, and the embodiments of the present application are not limited thereto.

[0105] Among them, the power divider can combine multiple input signals into one output signal, or distribute one input signal to multiple output ports. For example, Figure 7 The power divider used in is a one-to-four power divider; Fig.14 The power dividers used in the embodiment include a one-to-four power divider and a one-to-two power divider. Other types of power dividers may also be used according to actual conditions, and the present application embodiment does not limit this.

[0106] The coupler can couple the interference signal generated by the signal source to the RF signal of the device under test, and make the RF signal only transmit in one direction, with good isolation. For example, the coupler can make the device under test and the comprehensive tester communicate normally. When the signal source transmits an interference signal, the coupler can transmit the interference signal to the device under test, thereby interfering with the device under test, but the interference signal will not affect the normal communication between the device under test and the comprehensive tester.

[0107] The switch unit can be used to control an external test instrument. Depending on the test item, the switch unit can be connected to the test instrument or the load.

[0108] In a possible implementation, each coupler can be connected to a 5G NR port or a 4G LTE port for connecting to the device under test; it can also be connected to an instrument port for connecting to a comprehensive tester. In addition, each coupler can also be connected to a one-to-four power splitter, and the one-to-four power splitter is connected to the switch unit, so that the coupler can be connected to other test instruments or loads.

[0109] For relatively simple test items, each coupler can be connected to a 5G NR port or a 4G LTE port, an instrument port, and a load. Optionally, the load can be connected inside the RF control system or externally connected to the RF control system. The load can include a 50 ohm (Ω) load. The specific load access method and load size are not limited in the embodiments of this application.

[0110] For relatively complex test projects, each coupler can be connected to a 5G NR port or a 4G LTE port, an instrument port, and a test instrument, which can include a signal source, a spectrum analyzer, or a filter system.

[0111] It is understandable that the test instruments used for different test items may be the same or different. For example, when testing the PSD test item, the transmission spurious test item, the reception spurious test item or the sideband characteristic test item, the switch unit may be connected to the spectrum analyzer. When testing the adjacent channel interference test item, the blocking interference test item or the intermodulation interference test item, the switch unit may be connected to the signal source.

[0112] In some test items, multiple test instruments may be used, and the connection of the test instruments can be achieved by externally connecting the test instruments. For example, when testing the emission spurious test items, in addition to the spectrum analyzer, the filter system may also be used. In this case, the switch unit can be connected to the filter system, and the filter system can be connected to the spectrum analyzer externally, thereby achieving the connection of multiple test instruments.

[0113] Optionally, the device under test may use multiple 5G NR ports to transmit signals or use multiple 5G frequency bands to transmit signals, and / or the device under test may use multiple 4G LTE ports to transmit signals or use multiple 4G frequency bands to transmit signals. The RF control system can provide multiple 5G NR ports and multiple 4G LTE ports for each device under test.

[0114] For example, Figure 8 As shown, it is described as an example that four devices under test (EUT1, EUT2, EUT3, and EUT4) are tested, and the RF control system provides two 5G NR ports and two 4G LTE ports for each device under test.

[0115] Figure 8 The one-to-two power splitter can combine two 4G signals or two 5G signals to comprehensively test the 4G communication performance and 5G communication performance of the device under test. It can be understood that the type of power splitter used by the RF control system can be set according to actual conditions, and the embodiments of the present application are not limited. For example, if the RF control system provides four 5G NR ports for each device under test, a one-to-four power splitter is used. Similarly, if the RF control system provides four 4GLTE ports for each device under test, a one-to-four power splitter is also used.

[0116] The number of specific devices under test and the number of ports provided by the RF control system for each device under test can be adjusted according to actual conditions, and are not limited in the embodiments of the present application. For example, the RF control system can provide 4 5G NR ports and 4 4G LTE ports for each device under test. In this way, for 4 devices under test, the RF control system can have 16 5G NR ports and 16 4G LTE ports, that is, the RF control system can provide 32 ports for connecting to the devices under test. The internal circuit structure of the specific RF control system is similar to Figure 8 Similar, no further elaboration.

[0117] It is understandable that after the connection between the test instrument, the RF control system, the multiple devices under test and the main control system is completed, the test system can be networked through the network cell. Therefore, the test tasks can be configured in the test software installed in the main control system to realize the automated testing and test data collection of multiple devices under test.

[0118] like Fig. 9 As shown, the test task issuing interface 900 of the test software is shown. The interface 900 can be used to configure the test task, and the interface 900 can also be called a test start interface 900 or a test configuration interface 900. The interface 900 can include a basic information area 901 of the RF test, a test configuration area 902, and a confirmation control 903 and a cancel control 904.

[0119] The basic information area 901 may include but is not limited to one or more of the following: test name, test environment, selected execution machine, etc.

[0120] The test name can be named according to actual conditions, and the present application embodiment does not limit it. For example, the test name can be "XX project test".

[0121] The test environment may include test temperature, test voltage, etc. The test temperature may include high temperature, normal temperature, and low temperature. For example, the high temperature in the RF test may be around 35°C, the normal temperature may be around 25°C, and the low temperature may be around 0°C. The specific temperature ranges of high temperature, normal temperature, and low temperature may be set according to actual conditions, and the test temperature may also have other different temperature divisions, which are not limited in the embodiments of the present application. In this way, different test items can select different test temperatures according to actual conditions, so as to test the reliability and communication performance of the device under test under different temperature environments.

[0122] The test voltage may include high voltage, normal voltage and low voltage. Exemplarily, the high voltage in the RF test may be around 4.4 Vdc, the normal voltage may be around 3.8 Vdc, and the low voltage may be around 3.6 Vdc. The specific voltage ranges of high voltage, normal voltage and low voltage may be set according to actual conditions, and the test voltage may also have other different voltage divisions, which are not limited in the embodiments of the present application. In this way, different test items may select different test voltages according to actual conditions, thereby testing the reliability and communication performance of the device under test under different voltage environments.

[0123] Select the execution machine to set the IP address of the main control system used to test the current project. It is understandable that Fig. 9 The IP addresses in are exemplary values ​​and do not constitute limitations on the implementation of the present application. The IP address of the specific main control system can be set according to actual conditions.

[0124] The test configuration area 902 may include one or more device configuration areas under test. The test configuration area 902 may include, but is not limited to, one or more of the following: networking mode, test scenario, device under test, comprehensive tester port, control port of RF control system, test items, etc.

[0125] Among them, the networking mode may include independent networking and non-independent networking.

[0126] The test scenario may include one or more test scenarios. For example, it includes scenario 1 and scenario 2. Scenario 1 may be the scenario of the test items mentioned above that are relatively simple to test, and scenario 2 may be the scenario of the test items mentioned above that are relatively complex to test. The specific definition of the test scenario is not limited in the embodiments of the present application.

[0127] above Figure 5 or Figure 6 For example, the comprehensive tester port may include 4 5G NR ports and 4 4G LTE ports. Among them, the 4 5G NR ports include NR1 port, NR2 port, NR3 port and NR4 port, and the 4 4G LTE ports include LTE1 port, LTE2 port, LTE3 port and LTE4 port. The specific comprehensive tester may include more or less port types and port numbers, which are not limited in the embodiments of the present application.

[0128] Corresponding to the ports of the comprehensive tester, the control ports of the RF control system may include 4 5G NR ports, 4 5G instrument ports, 4 4G LTE ports and 4 4G instrument ports. Among them, the 4 5G NR ports include NR1 port, NR2 port, NR3 port and NR4 port. The 4 5G instrument ports include instrument 1 port, instrument 2 port, instrument 3 port and instrument 4 port respectively. The 4 4G LTE ports include LTE1 port, LTE2 port, LTE3 port and LTE4 port. The 4 4G instrument ports include instrument 5 port, instrument 6 port, instrument 7 port and instrument 8 port respectively.

[0129] The test items corresponding to the device under test may include relatively simple test items and relatively complex test items. As mentioned above, relatively simple test items may include but are not limited to one or more of the following test items: maximum power, spectrum mask, ACLR, sensitivity, frequency error, occupied bandwidth, etc. Relatively complex test items may include but are not limited to one or more of the following test items: PSD, transmitted spurious, received spurious, sideband characteristics, adjacent channel interference, blocking interference, intermodulation interference, etc. The specific introduction of each test item can refer to the relevant description in the above (1) SA test, which will not be repeated here.

[0130] It is understandable that in actual testing, different test contents may be configured for one or more devices under test according to different test requirements, and the present application embodiment does not limit this. Fig. 9 As shown, the test configuration area 902 is described by taking the configuration of two devices under test (device 1 and device under test 2) as an example.

[0131] For the device 1 to be tested, its networking mode is non-independent networking, and the test scenario is scenario 1, that is, the scenario of testing relatively simple test items. The ports of the comprehensive tester involve the NR1 port of 5G and the LTE1 port of 4G, and the control ports of the RF control system involve the NR1 port of 5G, the LTE1 port of 4G, the instrument 1 port, and the instrument 5 port. The test items include maximum power, spectrum mask, sensitivity, etc.

[0132] From the configuration information of the device under test 1, it can be seen that the NR1 port and LTE1 port of the RF control system are connected to the device under test 1, the instrument 1 port of the RF control system is connected to the NR1 port of the comprehensive tester, and the instrument 5 port of the RF control system is connected to the LTE1 port of the comprehensive tester. In other words, through the control of the RF control system, the NR1 port and LTE1 port of the comprehensive tester can be connected to the device under test 1 respectively. For details, please refer to Figure 5 In the corresponding embodiment, the connection mode of the device under test 1 is not described in detail. In this way, the comprehensive tester can perform 5G and 4G tests on the device under test 1, and collect test data.

[0133] For the device under test 2, its networking mode is non-independent networking, and the test scenario is scenario 2, that is, the scenario of testing relatively complex test items. The ports of the comprehensive tester involve the NR2 port of 5G and the LTE2 port of 4G, and the control ports of the RF control system involve the NR2 port of 5G, the LTE2 port of 4G, the instrument 2 port and the instrument 6 port. The test items include transmission spurious, reception spurious, sideband characteristics, etc.

[0134] From the configuration information of the device under test 2, it can be seen that the NR2 port and LTE2 port of the RF control system are connected to the device under test 2, the instrument 2 port of the RF control system is connected to the NR2 port of the comprehensive tester, and the instrument 6 port of the RF control system is connected to the LTE2 port of the comprehensive tester. In other words, through the control of the RF control system, the NR2 port and LTE2 port of the comprehensive tester can be connected to the device under test 2 respectively. For details, please refer to Figure 6 In the corresponding embodiment, the connection mode of the device under test 2 is not described in detail. In this way, the comprehensive tester can perform 5G and 4G tests on the device under test 2, and collect test data.

[0135] The determination control 903 may be used to determine the configuration information in the interface 900. In response to triggering the operation of the determination control 903, the main control system may instruct the test system to perform the RF test according to the configuration information in the interface 900.

[0136] The cancel control 904 can be used to cancel the configuration information in the interface 900. In response to the operation of triggering the cancel control 904, the main control system can exit the interface 900 and will not instruct the test system to perform RF testing according to the configuration information in the interface 900.

[0137] The following will illustrate the test method of the embodiment of the present application with reference to three test cases. It is understandable that the test cases described below are only part of the test cases of the embodiment of the present application, not all of the embodiments. Among them, the test cases involve 4 devices under test, a main control system, a comprehensive tester, and may also involve a spectrum analyzer, a signal source, a filtering system, etc.

[0138] (1) Test case 1:

[0139] Test steps 1. Test system networking.

[0140] According to different test requirements, complete the test system networking and verify whether the registration connection of the device under test is normal.

[0141] Test step 2: Issue the test task.

[0142] In the test task delivery interface, set basic information and test configuration. The basic information includes the test name, test environment, and automated execution machine.

[0143] For device 1 under test, set the networking mode to independent networking, the test scenario to scenario 1, the integrated tester port to NR1 port, the control ports of the RF control system include NR1 port and instrument 1 port, and the test items include maximum power, spectrum mask, ACLR, and sensitivity.

[0144] For device 2 under test, the networking mode is set to independent networking, the test scenario is scenario 1, the comprehensive tester port is the NR2 port, the control ports of the RF control system include the NR2 port and the instrument 2 port, and the test items include maximum power, spectrum mask, ACLR, and sensitivity.

[0145] For device 3 under test, the networking mode is set to independent networking, the test scenario is scenario 1, the port of the comprehensive tester is the NR3 port, the control ports of the RF control system include the NR3 port and the instrument 3 port, and the test items include maximum power, spectrum mask, ACLR, and sensitivity.

[0146] For device 4 under test, the networking mode is set to independent networking, the test scenario is scenario 1, the comprehensive tester port is the NR4 port, the control ports of the RF control system include the NR4 port and the instrument 4 port, and the test items include maximum power, spectrum mask, ACLR, and sensitivity.

[0147] Test step 3: Test the four devices under test and complete the traversal of the test items and test frequency bands.

[0148] Test step 4: Test data collection: After completing data collection, prepare a test report.

[0149] From the configuration information of the test step 2 of the above test case 1, it can be known that the test case 1 is used to test relatively simple test items of the four devices under test in the SA test.

[0150] The test task delivery interface related to test case 1 can be as follows Fig.10 The interface 1000 is shown in FIG. 1 and will not be described in detail.

[0151] The circuit diagram related to test case 1 is as follows Fig.11 As shown. Exemplarily, coupler 1 is respectively connected to 5G NR1 port, instrument 1 port, and a one-to-four power splitter. Similarly, coupler 2 is respectively connected to 5G NR2 port, instrument 2 port, and a one-to-four power splitter. Coupler 3 is respectively connected to 5G NR3 port, instrument 3 port, and a one-to-four power splitter. Coupler 4 is respectively connected to 5G NR4 port, instrument 4 port, and a one-to-four power splitter. The one-to-four power splitter is connected to the switch control module. In test case 1, the switch control module is connected to the load.

[0152] Understandably, Fig.11The internal circuit structure of the RF test system may also include a line connecting the coupler to the 4G LTE port. For test case 1, since the 4G LTE port is not used, the line connected to the 4G LTE port is not reflected. For specific line connections, please refer to the above Figure 7 or Figure 8 The relevant descriptions in the corresponding embodiments are not repeated here.

[0153] (2) Test case 2:

[0154] Test steps 1. Test system networking.

[0155] According to different test requirements, complete the test system networking and verify whether the registration connection of the device under test is normal.

[0156] Test step 2: Issue the test task.

[0157] In the test task delivery interface, set basic information and test configuration. The basic information includes the test name, test environment, and automated execution machine.

[0158] For device 1 under test, set the networking mode to independent networking, the test scenario to scenario 1, the integrated tester port to NR1 port, the control ports of the RF control system include NR1 port and instrument 1 port, and the test items include maximum power, spectrum mask, ACLR, and sensitivity.

[0159] For device 2 under test, the networking mode is set to independent networking, the test scenario is scenario 2, the integrated tester port is the NR2 port, the control ports of the RF control system include the NR2 port and the instrument 2 port, and the test items include spurious emission and sideband characteristics.

[0160] For device 3 under test, the networking mode is set to independent networking, the test scenario is scenario 1, the port of the comprehensive tester is the NR3 port, the control ports of the RF control system include the NR3 port and the instrument 3 port, and the test items include maximum power, spectrum mask, ACLR, and sensitivity.

[0161] For device 4 under test, the networking mode is set to independent networking, the test scenario is scenario 1, the comprehensive tester port is the NR4 port, the control ports of the RF control system include the NR4 port and the instrument 4 port, and the test items include maximum power, spectrum mask, ACLR, and sensitivity.

[0162] Test step 3: Test multiple devices under test and complete the traversal of test items and test frequency bands.

[0163] Test step 4: Test data collection: After completing data collection, prepare a test report.

[0164] From the configuration information of test step 2 of the above test case 2, it can be seen that test case 2 is used to test device 1, device 3 and device 4, which are relatively simple test items in SA testing; and to test device 2, which is a relatively complex test item in SA testing.

[0165] The test task delivery interface related to test case 2 can be as follows Fig.12 As shown in the interface 1200 in the example, the difference from the test task issuing interface 1000 of the test case 1 is that the test scenario of the test device 2 is scenario 2, and the test items include emission spurious and sideband characteristics, which will not be described in detail.

[0166] The circuit diagram related to test case 1 can be found in Fig.11 As shown. Exemplarily, coupler 1 is respectively connected to 5G NR1 port, meter 1 port, and a one-to-four power splitter. Similarly, coupler 2 is respectively connected to 5G NR2 port, meter 2 port, and a one-to-four power splitter. Coupler 3 is respectively connected to 5G NR3 port, meter 3 port, and a one-to-four power splitter. Coupler 4 is respectively connected to 5G NR4 port, meter 4 port, and a one-to-four power splitter. The one-to-four power splitter is connected to the switch control module.

[0167] For test equipment 1, test equipment 3 and test equipment 4, the switch control module will be connected to the load.

[0168] Different from test case 1, since the test items of coupler 2 include emission spurious and sideband characteristics, the switch control module will be connected to the spectrum analyzer.

[0169] (3) Test case 3:

[0170] Test steps 1. Test system networking.

[0171] According to different test requirements, complete the test system networking and verify whether the registration connection of the device under test is normal.

[0172] Test step 2: Issue the test task.

[0173] In the test task delivery interface, set basic information and test configuration. The basic information includes the test name, test environment, and automated execution machine.

[0174] For device 1 under test, set the networking mode to independent networking, the test scenario to scenario 1, the integrated tester port to NR1 port, the control ports of the RF control system include NR1 port and instrument 1 port, and the test items include maximum power, spectrum mask, ACLR, and sensitivity.

[0175] For device 2 under test, the networking mode is set to independent networking, the test scenario is scenario 2, the integrated tester port is the NR2 port, the control ports of the RF control system include the NR2 port and the instrument 2 port, and the test items include spurious emission and sideband characteristics.

[0176] For device 3 under test, the networking mode is set to non-independent networking, the test scenario is scenario 1, the ports of the comprehensive tester include NR3 port and LTE3 port, the control ports of the RF control system include NR3 port, LTE3 port, instrument 3 port and instrument 7 port, and the test items include maximum power, spectrum mask, ACLR, and sensitivity.

[0177] For the device 4 under test, the networking mode is set to non-independent networking, the test scenario is scenario 2, the ports of the comprehensive tester include NR4 port and LTE4 port, the control ports of the RF control system include NR4 port, LTE4 port, instrument 4 port and instrument 8 port, and the test items include receiving spurious and blocking characteristics.

[0178] Test step 3: Test multiple devices under test and complete the traversal of test items and test frequency bands.

[0179] Test step 4: Test data collection: After completing data collection, prepare a test report.

[0180] From the configuration information of test step 2 of the above test case 3, it can be seen that test case 3 is used to test relatively simple test items of device under test 1 in SA test; to test relatively complex test items of device under test 2 in SA test; to test relatively simple test items of device under test 3 in NSA test; and to test relatively complex test items of device under test 4 in NSA test.

[0181] The test task delivery interface related to test case 3 can be as follows Fig.13 1300 in the interface. Different from the test task delivery interface 1200 of test case 2, the networking mode of test device 3 is non-independent networking, the comprehensive tester port also includes LTE3 port, and the control port of the RF control system also includes LTE3 port and instrument 7 port. The networking mode of test device 4 is non-independent networking, the test scenario is scenario 2, the comprehensive tester port also includes LTE4 port, the control port of the RF control system also includes LTE4 port and instrument 8 port, and the test items include receiving spurious and blocking interference.

[0182] The circuit diagram related to test case 3 can be found in Fig.14 shown.

[0183] Exemplarily, for the test device 1, the coupler 1 is connected to the 5G NR1 port, the instrument 1 port, and the one-to-four power splitter. The one-to-four power splitter is connected to the switch control module, and the switch control module is connected to the load.

[0184] For test equipment 2, coupler 2 is connected to 5G NR2 port, instrument 2 port, and a one-to-four power splitter. The one-to-four power splitter is connected to the switch control module. Since the test items of test equipment 2 include emission spurious and sideband characteristics, the switch control module will be connected to the spectrum analyzer.

[0185] For test equipment 3, coupler 3 is connected to 5G NR3 port, instrument 3 port, and a one-to-four power splitter. Coupler 5 is connected to 4G LTE3 port, instrument 7 port, and a one-to-two power splitter. It can be understood that when testing the 5GNR3 port, the one-to-four power splitter is connected to the switch control module, and the switch control module is connected to the load. When testing the 4GLTE3 port, the one-to-two power splitter is connected to the switch control module, and the switch control module is connected to the load.

[0186] For test equipment 4, coupler 4 is connected to 5G NR4 port, instrument 4 port, and a one-to-four power splitter. Coupler 6 is connected to 4G LTE4 port, instrument 8 port, and a one-to-two power splitter.

[0187] It is understandable that when testing the 5G NR3 port, the one-to-four power splitter is connected to the switch control module. When testing the 4G LTE3 port, the one-to-two power splitter is connected to the switch control module. Since the test items of the test device 4 include receiving spurious signals and blocking interference. In the case of testing the receiving spurious signal test item, the switch control module will be connected to the spectrum analyzer. In the case of testing the blocking interference test item, the switch control module will be connected to the signal source.

[0188] In a possible implementation, an embodiment of the present application provides a radio frequency test circuit. The radio frequency test circuit may include a radio frequency connection unit. The radio frequency connection unit includes a plurality of first ports, a plurality of second ports, and at least one third port; wherein the plurality of first ports are used to connect to a plurality of devices under test, the plurality of second ports are used to connect to a plurality of ports of a test device, the test device is used to perform radio frequency tests on a plurality of devices under test, and the at least one third port is used to connect to at least one auxiliary device, the auxiliary device including one or more of the following: a load, a filtering device, a spectrum analyzer, and a signal generating device.

[0189] A radio frequency connection unit is used to transmit signals obtained from multiple first ports to multiple second ports when at least one third port is connected to a load; and / or, a radio frequency connection unit is used to transmit signals obtained from multiple first ports to the third port when at least one third port is connected to a filtering device, and transmit the filtered signals to the multiple second ports after being filtered by the filtering device; and / or, a radio frequency connection unit is used to transmit signals obtained from multiple first ports to the third port and multiple second ports respectively when at least one third port is connected to a spectrum analyzer; and / or, a radio frequency connection unit is used to transmit signals obtained from the third port to multiple first ports when at least one third port is connected to a signal generating device, and transmit the signals obtained from the third port to multiple first ports after the signals of the third port act on the devices to be tested of the multiple first ports, and then transmit the signals obtained from the multiple first ports to the multiple second ports.

[0190] In the embodiment of the present application, the radio frequency connection unit can be understood as the RF control system mentioned above. The multiple first ports may include the 5G NR port and / or the 4G LTE port mentioned above. The multiple second ports may include the 5G instrument port and / or the 4G instrument port mentioned above. At least one third port may include a port connected to the switch unit mentioned above. The test equipment can be understood as the comprehensive tester mentioned above. The comprehensive tester can integrate a variety of test functions and measurement tools to perform a variety of tests such as signal generation, modulation analysis, and power measurement.

[0191] Auxiliary equipment can be understood as the test instrument mentioned above. Among them, the filtering equipment can also be understood as the filtering system mentioned above. The filtering equipment can select the frequency of the RF signal and enhance or suppress specific frequency components. The signal generating equipment can also be called a signal generator or a signal source. The signal generating equipment can be used to provide interference signals, etc.

[0192] The internal circuit structure of the specific RF test circuit can be referred to Figure 7 Corresponding embodiments and Figure 8 The relevant descriptions in the corresponding embodiments are not repeated here.

[0193] It is understandable that for different test items, the auxiliary devices connected to the RF connection unit can be different. In this way, according to different test items, the RF test circuit can flexibly control the devices and interfaces connected to each port, perform different test tasks for multiple devices under test, and realize flexible configuration of RF test.

[0194] Optionally, the RF connection unit also includes multiple couplers and at least one first functional power divider; wherein, the input ends of the multiple couplers are used to connect to the multiple first ports, the output ends of the multiple couplers are used to connect to the multiple second ports, and the coupling ends of the multiple couplers are used to connect to the at least one first functional power divider; and the at least one first functional power divider is also used to connect to at least one third port.

[0195] When at least one first functional power divider is connected to a load, multiple couplers are used to transmit the signal obtained from the input end to the output end; and / or, when at least one first functional power divider is connected to a filtering device, multiple couplers are used to transmit the signal obtained from the input end to the coupling end, and after filtering by the filtering device, the filtered signal is transmitted to the output end; and / or, when at least one first functional power divider is connected to a spectrum analyzer, multiple couplers are used to transmit the signal obtained from the input end to the coupling end and the output end respectively; and / or, when at least one first functional power divider is connected to a signal generating device, multiple couplers are used to transmit the signal obtained from the coupling end to the input end, and after the signal at the coupling end acts on the device to be tested at the input end, the signal obtained from the input end is transmitted to the output end.

[0196] In the embodiment of the present application, the specific internal circuit structure of the RF connection unit can be referred to Figure 7 Corresponding to the relevant description in the embodiment. Exemplarily, the plurality of couplers may include Figure 7 The first functional power divider may include: Figure 7 The one-to-four power divider in the corresponding embodiment may also include Fig.14 This corresponds to the one-to-two power divider in the embodiment.

[0197] It is understandable that the RF connection unit can be used to connect the test equipment with the device under test to achieve the transmission of RF signals between the test equipment and the device under test, thereby performing RF testing. The RF connection unit includes RF devices such as power dividers and couplers. Among them, the power divider can combine multiple input signals into one output signal, or distribute one input signal to multiple output ports. The coupler can couple the interference signal generated by the signal source to the RF signal of the device under test, and make the RF signal transmitted in only one direction, with better isolation. In this way, the switching of the test path in the RF connection unit can be better realized, increasing the flexibility of the test.

[0198] Optionally, the multiple first ports include multiple 4G ports and multiple 5G ports, the multiple 4G ports are used to receive 4G signals from multiple devices under test, and the multiple 5G ports are used to receive 5G signals from multiple devices under test; the multiple second ports include multiple 4G device ports and multiple 5G device ports, the multiple 4G device ports are used to connect to the multiple 4G ports of the test device, and the multiple 5G device ports are used to connect to the multiple 5G ports of the test device.

[0199] A radio frequency connection unit is used to transmit signals obtained from multiple 4G ports to multiple 4G device ports, and / or transmit signals obtained from multiple 5G ports to multiple 5G device ports when at least one third port is connected to a load; and / or, a radio frequency connection unit is used to transmit signals obtained from multiple 4G ports to the third port when at least one third port is connected to a filtering device, and after filtering by the filtering device, transmit the filtered signals to multiple 4G device ports, and / or transmit signals obtained from multiple 5G ports to the third port, and after filtering by the filtering device, transmit the filtered signals to multiple 5G device ports; and / or, a radio frequency connection unit is used to transmit signals obtained from multiple 4G ports to the third port when at least one third port is connected to a spectrum analyzer. In the case of a signal generating device connected to at least one third port, the signals obtained from the third port are transmitted to the multiple 4G ports, and / or the signals obtained from the multiple 5G ports are transmitted to the third port and the multiple 5G device ports, respectively; and / or, the RF connection unit is used to transmit the signal obtained from the third port to the multiple 4G ports, and after the signal of the third port acts on the devices to be tested of the multiple 4G ports, the signals obtained from the multiple 4G ports are transmitted to the multiple 4G device ports, and / or the signal obtained from the third port is transmitted to the multiple 5G ports, and after the signal of the third port acts on the devices to be tested of the multiple 5G ports, the signals obtained from the multiple 5G ports are transmitted to the multiple 5G device ports.

[0200] In an embodiment of the present application, the multiple 4G ports may include the multiple 4G LTE ports mentioned above, and the multiple 5G ports may include the multiple 5G NR ports mentioned above.

[0201] It is understandable that multiple 4G device ports are used to connect to multiple 4G ports of the test device, and multiple 5G device ports are used to connect to multiple 5G ports of the test device. In this way, through the control of the RF connection unit, multiple ports of the test device can be connected to different devices under test, thereby improving the utilization rate of the test device.

[0202] Optionally, the multiple first ports include a first 4G port, a second 4G port, a third 4G port, a fourth 4G port, a first 5G port, a second 5G port, a third 5G port, and a fourth 5G port; the multiple second ports include a first 4G device port, a second 4G device port, a third 4G device port, a fourth 4G device port, a first 5G device port, a second 5G device port, a third 5G device port, and a fourth 5G device port; and the multiple couplers include a first coupler, a second coupler, a third coupler, a fourth coupler, a fifth coupler, a sixth coupler, a seventh coupler, and an eighth coupler.

[0203] Among them, the input end of the first coupler is used to connect to the first 4G port, and the output end of the first coupler is used to connect to the first 4G device port; the input end of the second coupler is used to connect to the second 4G port, and the output end of the second coupler is used to connect to the second 4G device port; the input end of the third coupler is used to connect to the third 4G port, and the output end of the third coupler is used to connect to the third 4G device port; the input end of the fourth coupler is used to connect to the fourth 4G port, and the output end of the fourth coupler is used to connect to the fourth 4G device port.

[0204] The input end of the fifth coupler is used to connect to the first 5G port, and the output end of the fifth coupler is used to connect to the first 5G device port; the input end of the sixth coupler is used to connect to the second 5G port, and the output end of the sixth coupler is used to connect to the second 5G device port; the input end of the seventh coupler is used to connect to the third 5G port, and the output end of the seventh coupler is used to connect to the third 5G device port; the input end of the eighth coupler is used to connect to the fourth 5G port, and the output end of the eighth coupler is used to connect to the fourth 5G device port.

[0205] In the embodiment of the present application, the first 4G port, the second 4G port, the third 4G port, and the fourth 4G port may include the LTE1 port, LTE2 port, LTE3 port, and LTE4 port mentioned above.

[0206] The first 5G port, the second 5G port, the third 5G port, and the fourth 5G port may include the NR1 port, NR2 port, NR3 port, and NR4 port mentioned above.

[0207] The first 4G device port, the second 4G device port, the third 4G device port, and the fourth 4G device port may include the meter 1 port, the meter 2 port, the meter 3 port, and the meter 4 port mentioned above.

[0208] The first 5G device port, the second 5G device port, the third 5G device port, and the fourth 5G device port may include the meter 5 port, the meter 6 port, the meter 7 port, and the meter 8 port mentioned above.

[0209] The first coupler, the second coupler, the third coupler, the fourth coupler, the fifth coupler, the sixth coupler, the seventh coupler, and the eighth coupler may include Figure 7 Corresponding to coupler 1, coupler 2, coupler 3, coupler 4, coupler 5, coupler 6, coupler 7, coupler 8 in the embodiment.

[0210] It is understood that each coupler can be connected to a 5G NR port or a 4G LTE port for connecting to the device under test, and the coupler can also be connected to an instrument port for connecting to the test equipment. In addition, each coupler can also be used to connect to an auxiliary device or a load.

[0211] In this way, the coupler can couple the interference signal generated by the signal source to the RF signal of the device under test, and make the RF signal only transmit in one direction, with good isolation. For example, the coupler can make the device under test and the test equipment communicate normally. When the signal source transmits an interference signal, the coupler can transmit the interference signal to the device under test, thereby interfering with the device under test, but the interference signal will not affect the test of the comprehensive tester.

[0212] Optionally, the RF connection unit also includes multiple couplers, at least one first functional power divider and multiple second functional power dividers; wherein the multiple second functional power dividers are used to connect to the multiple first ports, the input ends of the multiple couplers are used to connect to the multiple second functional power dividers, the output ends of the multiple couplers are used to connect to the multiple second ports, the coupling ends of the multiple couplers are used to connect to at least one first functional power divider, and the at least one first functional power divider is also used to connect to at least one third port.

[0213] In the case where at least one first functional power divider is connected to a load, a plurality of second functional power dividers are used to combine the signals obtained from the plurality of first ports, and a plurality of couplers are used to transmit the combined signals to the output end; and / or, in the case where at least one first functional power divider is connected to a filtering device, a plurality of second functional power dividers are used to combine the signals obtained from the plurality of first ports, and a plurality of couplers are used to transmit the combined signals to the coupling end, and after filtering by the filtering device, the filtered signals are transmitted to the output end; and / or, in the case where at least one first functional power divider is connected to a spectrum analyzer, a plurality of second functional power dividers are used to combine the signals obtained from the plurality of first ports, and a plurality of couplers are used to transmit the combined signals to the coupling end and the output end respectively; and / or, in the case where at least one first functional power divider is connected to a signal generating device, a plurality of couplers are used to transmit the signals obtained from the coupling end to a plurality of second functional power dividers, and after the signals of the plurality of second functional power dividers act on the device to be tested, the signals obtained from the plurality of second functional power dividers are transmitted to the output end, and the plurality of second functional power dividers are used to combine the signals obtained from the plurality of first ports.

[0214] In the embodiment of the present application, the specific internal circuit structure of the RF connection unit can be referred to Figure 8 Corresponding to the relevant description in the embodiment. Exemplarily, the plurality of couplers may include Figure 8 The first functional power divider may include: Figure 8 The corresponding embodiment is a one-to-four power divider connected to auxiliary equipment such as a filtering system and a signal source. The plurality of second function power dividers may include Figure 8 The corresponding embodiments include a one-to-two power splitter 1, a one-to-two power splitter 2, a one-to-two power splitter 3, a one-to-two power splitter 4, a one-to-two power splitter 5, a one-to-two power splitter 6, a one-to-two power splitter 7, and a one-to-two power splitter 8.

[0215] It is understandable that the RF connection unit can be used to connect the test device to the device under test to achieve the transmission of RF signals between the test device and the device under test, thereby performing RF testing. The RF connection unit includes RF devices such as a first functional power divider, a second functional power divider, and a coupler. Among them, the power divider can combine multiple input signals into one output signal, or distribute one input signal to multiple output ports. The coupler can couple the interference signal generated by the signal source to the RF signal of the device under test, and make the RF signal transmitted in only one direction, with better isolation. In this way, the switching of the test path in the RF connection unit can be better realized, increasing the flexibility of the test.

[0216] Optionally, the multiple first ports include multiple first 4G ports, multiple second 4G ports, multiple third 4G ports, multiple fourth 4G ports, multiple first 5G ports, multiple second 5G ports, multiple third 5G ports, and multiple fourth 5G ports; the multiple second ports include a first 4G device port, a second 4G device port, a third 4G device port, a fourth 4G device port, a first 5G device port, a second 5G device port, a third 5G device port, and a fourth 5G device port; the multiple couplers include a first coupler, a second coupler, a third coupler, a fourth coupler, a fifth coupler, a sixth coupler, a seventh coupler, and an eighth coupler; and the multiple second function power splitters include a first power splitter, a second power splitter, a third power splitter, a fourth power splitter, a fifth power splitter, a sixth power splitter, a seventh power splitter, and an eighth power splitter.

[0217] Among them, the first power splitter is used to connect to multiple first 4G ports, the input end of the first coupler is used to connect to the first power splitter, and the output end of the first coupler is used to connect to the first 4G device port; the second power splitter is used to connect to multiple second 4G ports, the input end of the second coupler is used to connect to the second power splitter, and the output end of the second coupler is used to connect to the second 4G device port; the third power splitter is used to connect to multiple third 4G ports, the input end of the third coupler is used to connect to the third power splitter, and the output end of the third coupler is used to connect to the third 4G device port; the fourth power splitter is used to connect to multiple fourth 4G ports, the input end of the fourth coupler is used to connect to the fourth power splitter, and the output end of the fourth coupler is used to connect to the fourth 4G device port.

[0218] The fifth power splitter is used to connect to multiple first 5G ports, the input end of the fifth coupler is used to connect to the fifth power splitter, and the output end of the fifth coupler is used to connect to the first 5G device port; the sixth power splitter is used to connect to multiple second 5G ports, the input end of the sixth coupler is used to connect to the sixth power splitter, and the output end of the sixth coupler is used to connect to the second 5G device port; the seventh power splitter is used to connect to multiple third 5G ports, the input end of the seventh coupler is used to connect to the seventh power splitter, and the output end of the seventh coupler is used to connect to the third 5G device port; the eighth power splitter is used to connect to multiple fourth 5G ports, the input end of the eighth coupler is used to connect to the eighth power splitter, and the output end of the eighth coupler is used to connect to the fourth 5G device port.

[0219] In the embodiment of the present application, the plurality of first 4G ports may include Figure 8 The two 4G ports of the device under test 1 are respectively EUT1 LTE1 port and EUT1 LTE2 port. The plurality of second 4G ports may include Figure 8The two 4G ports of the device under test 2 are respectively EUT2 LTE1 port and EUT2 LTE2 port. The plurality of third 4G ports may include Figure 8 The two 4G ports of the device under test 3 are respectively EUT3 LTE1 port and EUT3 LTE2 port. The plurality of fourth 4G ports may include Figure 8 The two 4G ports of the device under test 4 are respectively the EUT4 LTE1 port and the EUT4 LTE2 port.

[0220] The first 5G port may include Figure 8 The two 5G ports of the device under test 1 are EUT1 NR1 port and EUT1 NR2 port. The second 5G port may include Figure 8 The two 5G ports of the device under test 1 are EUT1 NR1 port and EUT1 NR2 port. The third 5G port may include Figure 8 The two 5G ports of the device under test 1 are EUT1NR1 port and EUT1NR2 port. The fourth 5G port may include Figure 8 The two 5G ports of the device under test 1 are the EUT1 NR1 port and the EUT1 NR2 port.

[0221] The first 4G device port, the second 4G device port, the third 4G device port, and the fourth 4G device port may include the meter 1 port, the meter 2 port, the meter 3 port, and the meter 4 port mentioned above.

[0222] The first 5G device port, the second 5G device port, the third 5G device port, and the fourth 5G device port may include the meter 5 port, the meter 6 port, the meter 7 port, and the meter 8 port mentioned above.

[0223] The first coupler, the second coupler, the third coupler, the fourth coupler, the fifth coupler, the sixth coupler, the seventh coupler, and the eighth coupler may include Figure 8 Corresponding to coupler 1, coupler 2, coupler 3, coupler 4, coupler 5, coupler 6, coupler 7, coupler 8 in the embodiment.

[0224] The first power divider, the second power divider, the third power divider, the fourth power divider, the fifth power divider, the sixth power divider, the seventh power divider and the eighth power divider may include Figure 8 The corresponding embodiments include a one-to-two power splitter 1, a one-to-two power splitter 2, a one-to-two power splitter 3, a one-to-two power splitter 4, a one-to-two power splitter 5, a one-to-two power splitter 6, a one-to-two power splitter 7, and a one-to-two power splitter 8.

[0225] The number of ports provided by the specific RF test circuit for each device under test can be adjusted according to actual conditions, and the embodiments of the present application are not limited thereto. For example, the RF test circuit can provide 4 5G NR ports and 4 4G LTE ports for each device under test. In this way, for 4 devices under test, the RF test circuit can have 16 5G NR ports and 16 4G LTE ports, that is, the RF test circuit can provide 32 ports for connecting to the devices under test. The internal circuit structure of the specific RF test circuit is similar to Figure 8 Similar, no further elaboration.

[0226] It is understandable that the second functional power divider can merge multiple 4G signals, or merge multiple 5G signals, so as to comprehensively test the 4G communication performance and 5G communication performance of the device under test.

[0227] Optionally, when using a radio frequency test circuit to test the first test item, at least one third port is used to connect to a load; wherein the first test item includes one or more of the following test items: a maximum power test item, a spectrum mask test item, an adjacent channel leakage ratio test item, a sensitivity test item, a frequency error test item, and an occupied bandwidth test item.

[0228] In the embodiment of the present application, the first test item can refer to the relevant description in the above (1) SA test and will not be repeated here.

[0229] It is understandable that the maximum power test item can be used to test the maximum transmission power of the device under test, etc. The spectrum mask test item can be used to test whether the signal transmitted by the device under test is within the specified operating frequency band. The adjacent channel leakage ratio test item can be used to measure the interference caused by the device under test to the adjacent frequency band. The sensitivity test item can be used to test the minimum input power of the device under test. The frequency error test item can be used to test the deviation between the actual operating frequency of the device under test and the expected frequency. The occupied bandwidth test item can be used to test the frequency range of the signal transmitted by the device under test. By performing these tests on the device under test, the transmission quality of the RF signal can be better controlled and the communication performance of the electronic equipment can be improved.

[0230] Optionally, when using a radio frequency test circuit to test the second test item, at least one third port is used to connect to an auxiliary device; wherein the second test item includes one or more of the following test items: a power spectrum density test item, a transmission spurious test item, a reception spurious test item, a sideband characteristic test item, an adjacent channel interference test item, a blocking interference test item, and an intermodulation interference test item.

[0231] In the embodiment of the present application, the second test item can refer to the relevant description in the above (2) NSA test and will not be repeated here.

[0232] It is understood that the power spectral density test item can be used to evaluate the spectral characteristics of the signal so that it does not interfere with other frequency bands. The transmit spurious test item can be used to test the transmit spurious signals that can interfere with other electronic devices and communication systems. The receive spurious test item can be used to test the unnecessary signals that may cause misunderstanding by the receiver. The sideband characteristic test item can be used to test the modulation performance and spectral purity of the device under test. The adjacent channel interference test item can be used to test the interference caused by the received signal of the device under test to the adjacent channel. The blocking interference test item can be used to test the performance of the receiver of the device under test in the presence of strong interference signals. The intermodulation interference test item can be used to test the ability of the device under test to produce nonlinear distortion. By performing these tests on the device under test, the transmission quality of the RF signal can be better controlled and the communication performance of the electronic equipment can be improved.

[0233] In a possible implementation, an embodiment of the present application provides a radio frequency test system. The radio frequency test system includes a radio frequency test circuit, multiple devices under test, and a test device. The radio frequency test circuit is used to connect to the multiple devices under test and to connect to the test device, so that the test device performs radio frequency tests on the multiple devices under test based on pre-configured test information.

[0234] In the embodiment of the present application, the radio frequency testing system may include Figure 3 , Figure 4 , Figure 5 as well as Figure 6 The RF test system can be used to perform SA tests or NSA tests to test the ability of the device under test to transmit, receive, and transmit signals within a specific frequency band, so that the device under test can effectively resist interference from other devices or itself while having sufficient communication capabilities.

[0235] It is understandable that the test information can be pre-configured in the RF test system. In this way, based on the pre-configured test information, automated testing and test data collection of multiple devices under test can be achieved, so that the RF test system can support testing of multiple devices under test each time, thereby making full use of the multiple ports provided by the test device and improving the efficiency of RF testing.

[0236] Optionally, the RF test system further includes a main control unit; the main control unit is used to connect to multiple devices under test, configure test information of the multiple devices under test, and instruct the RF test system to perform RF testing based on the configured test information.

[0237] In the embodiment of the present application, the main control unit can be understood as the main control system mentioned above. The main control system includes any computer with test software installed, and the test software is used to set basic information of the test items, test configuration information, etc. In this way, the main control system can control which frequency bands and test items are tested for each device under test.

[0238] The main control unit provides an interface for configuring test information. Fig. 9 The relevant description of the test task issuing interface 900 in the corresponding embodiment is not repeated here.

[0239] It is understandable that after the connection between the test equipment, the RF test circuit, multiple devices under test and the main control unit is completed, the RF test system can be networked through the network cell. Therefore, the test tasks can be configured in the test software installed in the main control unit to realize the automated testing and test data collection of multiple devices under test, thereby improving the efficiency of RF testing.

[0240] Optionally, the test information includes one or more of the following information: test name, test environment, test executor information, networking mode of the target device under test, test scenario of the target device under test, test items of the target device under test, ports of the radio frequency test circuit used when testing the target device under test, and ports of the test device used when testing the target device under test; wherein the target device under test is included in the multiple devices under test.

[0241] In the embodiment of the present application, the test information can refer to Fig. 9 It is understandable that by configuring the test information through the main control system, different test tasks can be issued to multiple devices under test, thereby achieving flexible configuration of the radio frequency test.

[0242] Optionally, when using the RF test system to test the second test item, the RF test system also includes at least one auxiliary device; wherein, the at least one auxiliary device includes one or more of the following: a load, a filtering device, a spectrum analyzer, and a signal generating device, and the second test item includes one or more of the following test items: a power spectral density test item, a transmitted spurious test item, a received spurious test item, a sideband characteristic test item, an adjacent channel interference test item, a blocking interference test item, and an intermodulation interference test item.

[0243] In the embodiment of the present application, by testing the second test item on the device to be tested, the transmission quality of the radio frequency signal can be better controlled and the communication performance of the electronic device can be improved.

[0244] Fig.15 The radio frequency testing method of the embodiment of the present application is shown, which is applied to the radio frequency testing circuit. The method includes:

[0245] S1501. Receive a radio frequency signal of a target device under test based on pre-configured test information of multiple devices under test; wherein the multiple devices under test include the target device under test.

[0246] S1502: Transmit the radio frequency signal of the target device under test to the test device.

[0247] S1503: Based on the test equipment, implement testing of the radio frequency signal of the target device under test.

[0248] In the embodiment of the present application, the pre-configured test information of the multiple devices under test may include the test information preset in the radio frequency test circuit, and may also include the test information configured in the interface provided by the main control unit. Fig. 9 The relevant description of the test task issuing interface 900 in the corresponding embodiment is not repeated here.

[0249] When transmitting the RF signal of the target device to be tested to the test device, the connection relationship between the ports in the RF test circuit can refer to the above description of the interface in the RF test circuit, which will not be repeated. Exemplarily, the RF test method of the embodiment of the present application may include the RF test method in the embodiment corresponding to the above test case 1, test case 2 or test case 3, which will not be repeated.

[0250] The test of the radio frequency signal of the target device under test by the test device may include a first test item and a second test item. For details, please refer to the above related description, which will not be repeated here.

[0251] The RF testing method provided in the embodiment of the present application and the RF testing circuit can configure test frequency bands and test items for multiple devices under test, so that the RF testing system can support testing multiple devices under test each time, thereby making full use of the test equipment and improving the efficiency of RF testing.

[0252] Optional, in Fig.15 On the basis of the corresponding embodiment, before receiving the RF signal of the target device under test, it also includes: networking the RF test system with multiple devices under test, test equipment, and a main control unit; wherein the RF test circuit is connected to multiple devices under test, and is connected to the test equipment, the main control unit is connected to multiple devices under test, and the main control unit is used to configure test information of multiple devices under test, and instruct the RF test system to perform RF testing on multiple devices under test based on the configured test information.

[0253] In the embodiment of the present application, after the RF test circuit and multiple devices under test, the test device, and the main control unit complete the RF test system networking, the RF test system networking can be performed through the network cell. Thus, the test tasks can be configured in the test software installed in the main control unit to realize the automated testing and test data collection of multiple devices under test.

[0254] The interface for configuring test information provided by the main control unit can be referred to Fig. 9 The relevant description of the test task issuing interface 900 in the corresponding embodiment is not repeated here.

[0255] Optional, in Fig.15 On the basis of the corresponding embodiments, based on the test information of multiple devices under test pre-configured, the radio frequency signal of the target device under test is received, including: based on the test information of multiple devices under test pre-configured in the main control unit, determining the interface connection method with the target device under test and the interface connection method with the test device; based on the interface connected to the target device under test, receiving the radio frequency signal of the target device under test; based on the test device, implementing the test of the radio frequency signal of the target device under test, including: based on the test device, testing the target test items of the target device under test, wherein the test information of multiple devices under test includes the target test items of the target device under test.

[0256] In the embodiment of the present application, the interface connection mode between the RF test circuit and the target device under test, and the interface connection mode with the test device, can refer to the above-mentioned description of the interface in the RF test circuit, and will not be repeated. The target test item may include a first test item and a second test item. For details, please refer to the above-mentioned description, and will not be repeated.

[0257] The test equipment can test and analyze the radio frequency signal, which can specifically include testing and analyzing the radio frequency signal in the first test item and the second test item. In this way, the ability of the device under test in terms of signal transmission, reception, and transmission is tested, so that the device under test can effectively resist interference from other devices or itself while having sufficient communication capabilities.

[0258] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with the relevant laws, regulations and standards of relevant countries and regions, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0259] The above mainly introduces the solution provided by the embodiment of the present application from the perspective of the method. In order to achieve the above functions, it includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should easily appreciate that, in combination with the method steps of each example described in the embodiment disclosed herein, the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present application.

Claims

1. A radio frequency test circuit, characterized in that: include: A radio frequency connection unit, the radio frequency connection unit comprising a plurality of first ports, a plurality of second ports, and at least one third port; The plurality of first ports are used to connect to a plurality of devices under test, the plurality of second ports are used to connect to a plurality of ports of a test device, the test device is used to perform radio frequency tests on the plurality of devices under test, and the at least one third port is used to connect to at least one auxiliary device, the auxiliary device comprising one or more of the following: a load, a filtering device, a spectrum analyzer, and a signal generating device; The RF connection unit is configured to transmit signals obtained from the plurality of first ports to the plurality of second ports when the at least one third port is connected to the load; And / or, the RF connection unit is used to transmit the signals obtained from the plurality of first ports to the third port when the at least one third port is connected to the filtering device, and transmit the filtered signals to the plurality of second ports after being filtered by the filtering device; and / or, the radio frequency connection unit is used to transmit signals obtained from the plurality of first ports to the third port and the plurality of second ports respectively when the at least one third port is connected to the spectrum analyzer; And / or, the RF connection unit is used to transmit the signal obtained from the third port to the multiple first ports when the at least one third port is connected to the signal generating device, and after the signal of the third port acts on the devices under test of the multiple first ports, transmit the signal obtained from the multiple first ports to the multiple second ports.

2. The radio frequency test circuit according to claim 1, characterized in that: The radio frequency connection unit further includes a plurality of couplers and at least one first functional power divider; The input ends of the plurality of couplers are used to connect to the plurality of first ports, the output ends of the plurality of couplers are used to connect to the plurality of second ports, and the coupling ends of the plurality of couplers are used to connect to the at least one first functional power divider; the at least one first functional power divider is also used to connect to the at least one third port; In the case where the at least one first functional power divider is connected to the load, the plurality of couplers are used to transmit the signal obtained from the input end to the output end; and / or, in the case where the at least one first functional power divider is connected to the filtering device, the plurality of couplers are used to transmit the signal obtained from the input end to the coupling end, and after filtering by the filtering device, transmit the filtered signal to the output end; and / or, in the case where the at least one first functional power divider is connected to the spectrum analyzer, the plurality of couplers are used to transmit the signal obtained from the input end to the coupling end and the output end respectively; And / or, when the at least one first functional power divider is connected to the signal generating device, the multiple couplers are used to transmit the signal obtained from the coupling end to the input end, and after the signal at the coupling end acts on the device under test at the input end, the signal obtained from the input end is transmitted to the output end.

3. The radio frequency test circuit according to claim 2, characterized in that: The multiple first ports include multiple 4G ports and multiple 5G ports, the multiple 4G ports are used to receive 4G signals of the multiple devices under test, and the multiple 5G ports are used to receive 5G signals of the multiple devices under test, the multiple second ports include multiple 4G device ports and multiple 5G device ports, the multiple 4G device ports are used to connect to the multiple 4G ports of the test device, and the multiple 5G device ports are used to connect to the multiple 5G ports of the test device; The RF connection unit is configured to transmit signals obtained from the multiple 4G ports to the multiple 4G device ports, and / or transmit signals obtained from the multiple 5G ports to the multiple 5G device ports when the at least one third port is connected to the load; And / or, the RF connection unit is used to transmit the signals obtained from the multiple 4G ports to the third port when the at least one third port is connected to the filtering device, and after filtering by the filtering device, transmit the filtered signals to the multiple 4G device ports, and / or transmit the signals obtained from the multiple 5G ports to the third port, and after filtering by the filtering device, transmit the filtered signals to the multiple 5G device ports; And / or, the RF connection unit is used to transmit the signals obtained from the multiple 4G ports to the third port and the multiple 4G device ports respectively, and / or transmit the signals obtained from the multiple 5G ports to the third port and the multiple 5G device ports respectively, when the at least one third port is connected to the spectrum analyzer; And / or, the RF connection unit is used to transmit the signal obtained from the third port to the multiple 4G ports when the at least one third port is connected to the signal generating device, and after the signal from the third port acts on the devices to be tested of the multiple 4G ports, transmit the signal obtained from the multiple 4G ports to the multiple 4G device ports, and / or transmit the signal obtained from the third port to the multiple 5G ports, and after the signal from the third port acts on the devices to be tested of the multiple 5G ports, transmit the signal obtained from the multiple 5G ports to the multiple 5G device ports.

4. The radio frequency test circuit according to claim 3, characterized in that: The plurality of first ports include a first 4G port, a second 4G port, a third 4G port, a fourth 4G port, a first 5G port, a second 5G port, a third 5G port, and a fourth 5G port; the plurality of second ports include a first 4G device port, a second 4G device port, a third 4G device port, a fourth 4G device port, a first 5G device port, a second 5G device port, a third 5G device port, and a fourth 5G device port; the plurality of couplers include a first coupler, a second coupler, a third coupler, a fourth coupler, a fifth coupler, a sixth coupler, a seventh coupler, and an eighth coupler; The input end of the first coupler is used to connect to the first 4G port, and the output end of the first coupler is used to connect to the first 4G device port; The input end of the second coupler is used to connect to the second 4G port, and the output end of the second coupler is used to connect to the second 4G device port; The input end of the third coupler is used to connect to the third 4G port, and the output end of the third coupler is used to connect to the third 4G device port; The input end of the fourth coupler is used to connect to the fourth 4G port, and the output end of the fourth coupler is used to connect to the fourth 4G device port; The input end of the fifth coupler is used to connect to the first 5G port, and the output end of the fifth coupler is used to connect to the first 5G device port; The input end of the sixth coupler is used to connect to the second 5G port, and the output end of the sixth coupler is used to connect to the second 5G device port; The input end of the seventh coupler is used to connect to the third 5G port, and the output end of the seventh coupler is used to connect to the third 5G device port; The input end of the eighth coupler is used to connect to the fourth 5G port, and the output end of the eighth coupler is used to connect to the fourth 5G device port.

5. The radio frequency test circuit according to claim 1, characterized in that: The radio frequency connection unit further includes a plurality of couplers, at least one first functional power divider and a plurality of second functional power dividers; The plurality of second functional power dividers are used to be connected to the plurality of first ports, the input ends of the plurality of couplers are used to be connected to the plurality of second functional power dividers, the output ends of the plurality of couplers are used to be connected to the plurality of second ports, the coupling ends of the plurality of couplers are used to be connected to the at least one first functional power divider, and the at least one first functional power divider is also used to be connected to the at least one third port; In the case where the at least one first functional power divider is connected to the load, the plurality of second functional power dividers are used to combine the signals obtained from the plurality of first ports, and the plurality of couplers are used to transmit the combined signals to the output end; and / or, in the case where the at least one first functional power divider is connected to the filtering device, the plurality of second functional power dividers are used to combine the signals obtained from the plurality of first ports, the plurality of couplers are used to transmit the combined signals to the coupling end, and after filtering by the filtering device, transmit the filtered signals to the output end; and / or, in the case where the at least one first functional power divider is connected to the spectrum analyzer, the plurality of second functional power dividers are used to combine the signals obtained from the plurality of first ports, and the plurality of couplers are used to transmit the combined signals to the coupling end and the output end respectively; And / or, when the at least one first functional power divider is connected to the signal generating device, the multiple couplers are used to transmit the signal obtained from the coupling end to the multiple second functional power dividers, and after the signals of the multiple second functional power dividers act on the device under test, the signals obtained from the multiple second functional power dividers are transmitted to the output end, and the multiple second functional power dividers are used to merge the signals obtained from the multiple first ports.

6. The radio frequency test circuit according to claim 5, characterized in that: The plurality of first ports include a plurality of first 4G ports, a plurality of second 4G ports, a plurality of third 4G ports, a plurality of fourth 4G ports, a plurality of first 5G ports, a plurality of second 5G ports, a plurality of third 5G ports, and a plurality of fourth 5G ports; the plurality of second ports include a first 4G device port, a second 4G device port, a third 4G device port, a fourth 4G device port, a first 5G device port, a second 5G device port, a third 5G device port, and a fourth 5G device port; the plurality of couplers include a first coupler, a second coupler, a third coupler, a fourth coupler, a fifth coupler, a sixth coupler, a seventh coupler, and an eighth coupler; the plurality of second function power splitters include a first power splitter, a second power splitter, a third power splitter, a fourth power splitter, a fifth power splitter, a sixth power splitter, a seventh power splitter, and an eighth power splitter; The first power splitter is used to connect to the multiple first 4G ports, the input end of the first coupler is used to connect to the first power splitter, and the output end of the first coupler is used to connect to the first 4G device port; The second power splitter is used to connect to the plurality of second 4G ports, the input end of the second coupler is used to connect to the second power splitter, and the output end of the second coupler is used to connect to the second 4G device port; The third power splitter is used to connect to the plurality of third 4G ports, the input end of the third coupler is used to connect to the third power splitter, and the output end of the third coupler is used to connect to the third 4G device port; The fourth power splitter is used to connect to the plurality of fourth 4G ports, the input end of the fourth coupler is used to connect to the fourth power splitter, and the output end of the fourth coupler is used to connect to the fourth 4G device port; The fifth power splitter is used to connect to the multiple first 5G ports, the input end of the fifth coupler is used to connect to the fifth power splitter, and the output end of the fifth coupler is used to connect to the first 5G device port; The sixth power splitter is used to connect to the multiple second 5G ports, the input end of the sixth coupler is used to connect to the sixth power splitter, and the output end of the sixth coupler is used to connect to the second 5G device port; The seventh power splitter is used to connect to the multiple third 5G ports, the input end of the seventh coupler is used to connect to the seventh power splitter, and the output end of the seventh coupler is used to connect to the third 5G device port; The eighth power splitter is used to connect to the multiple fourth 5G ports, the input end of the eighth coupler is used to connect to the eighth power splitter, and the output end of the eighth coupler is used to connect to the fourth 5G device port.

7. The radio frequency test circuit according to any one of claims 1 to 6, characterized in that: When the radio frequency test circuit is used to test the first test item, the at least one third port is used to connect to the load; Among them, the first test item includes one or more of the following test items: maximum power test item, spectrum mask test item, adjacent channel leakage ratio test item, sensitivity test item, frequency error test item, and occupied bandwidth test item.

8. The radio frequency test circuit according to any one of claims 1 to 6, characterized in that: In case of testing the second test item using the radio frequency test circuit, the at least one third port is used to connect to the auxiliary device; Among them, the second test item includes one or more of the following test items: power spectrum density test item, transmission spurious test item, reception spurious test item, sideband characteristic test item, adjacent channel interference test item, blocking interference test item, and intermodulation interference test item.

9. A radio frequency testing system, characterized in that: The method comprises the radio frequency test circuit according to any one of claims 1 to 8, a plurality of devices to be tested, and a test device; The radio frequency test circuit is used to connect to the multiple devices under test and to connect to the test device, so that the test device performs radio frequency test on the multiple devices under test based on pre-configured test information.

10. The radio frequency testing system according to claim 9, characterized in that: The RF test system also includes a main control unit; the main control unit is used to connect to the multiple devices under test, configure test information of the multiple devices under test, and instruct the RF test system to perform RF testing based on the configured test information.

11. The radio frequency testing system according to claim 10, characterized in that: The test information includes one or more of the following information: test name, test environment, test execution machine information, networking mode of the target device under test, test scenario of the target device under test, test items of the target device under test, ports of the RF test circuit used when testing the target device under test, and ports of the test device used when testing the target device under test; wherein the target device under test is included in the multiple devices under test.

12. The radio frequency testing system according to any one of claims 9 to 11, characterized in that: In case of using the radio frequency test system to test the second test item, the radio frequency test system further comprises at least one auxiliary device; Among them, the at least one auxiliary device includes one or more of the following: a load, a filtering device, a spectrum analyzer, and a signal generating device; the second test item includes one or more of the following test items: a power spectrum density test item, a transmission spurious test item, a reception spurious test item, a sideband characteristic test item, an adjacent channel interference test item, a blocking interference test item, and an intermodulation interference test item.

13. A radio frequency testing method, applied to the radio frequency testing circuit according to any one of claims 1 to 8, characterized in that: The method comprises: Based on the pre-configured test information of multiple devices under test, receiving the radio frequency signal of the target device under test; wherein the multiple devices under test include the target device under test; Transmitting a radio frequency signal of the target device under test to a test device; Based on the test device, the radio frequency signal of the target device to be tested is tested.

14. The method according to claim 13, characterized in that Before receiving the radio frequency signal of the target device under test, the method further includes: Establishing a radio frequency test system network with the multiple devices under test, the test device, and a main control unit; The RF test circuit is connected to the multiple devices under test and to the test device, the main control unit is connected to the multiple devices under test, and the main control unit is used to configure test information of the multiple devices under test and instruct the RF test system to perform RF testing on the multiple devices under test based on the configured test information.

15. The method according to claim 14, characterized in that The receiving the radio frequency signal of the target device under test based on the pre-configured test information of the plurality of devices under test includes: Determine an interface connection mode with the target device under test and an interface connection mode with the test device based on the test information of the plurality of devices under test preconfigured in the main control unit; Receiving a radio frequency signal of the target device under test based on an interface connected to the target device under test; The testing of the radio frequency signal of the target device under test based on the testing device includes: Based on the testing device, target test items of the target device under test are tested, and the test information of the multiple devices under test includes the target test items of the target device under test.

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