Testability test system of wireless transceiving communication device and test method thereof

Abstract

This invention proposes a test system and method for wireless transceiver communication devices, applicable to testing wireless transceiver communication devices in a laboratory environment. The system includes an intermediate frequency (IF) signal processing unit, N transceiver / receiver (T / R) components, a calibration component, a 1:N power divider, and a fixed attenuator. The IF signal processing unit controls and transmits signals to the N T / R components and the calibration component through various interfaces. The other end of each of the N T / R components is connected to the 1:N power divider via simulated RF cables. The calibration component calibrates the N T / R components, and its other end is connected to one end of the fixed attenuator. The 1:N power divider distributes power to the simulated signal, and the fixed attenuator is used to simulate signal amplitude attenuation. This system can simulate the test closed loop of the tested wireless transceiver communication device using a wired method instead of a wireless method under laboratory conditions. The test environment parameters are adjustable, and the simulation effect is accurate.

Description

Technical Field

[0001] This invention relates to the field of communication equipment testing technology, and in particular to a test system and test method for wireless transceiver communication equipment. Background Technology

[0002] Testability is a design characteristic of equipment that enables timely and accurate determination of its operational, inoperable, or degraded states, and isolates internal faults. Testability verification, a branch of the testability profession, aims to assess and evaluate the testability level of equipment. A primary and directly effective method for implementing testability verification is testability testing. Conducting testability testing involves injecting faults into the test specimen to simulate these faults, thereby obtaining a sufficient number of fault samples in a short time. This allows for the evaluation of the testability indicators and the assessment of the testability design. Testability testing requires crucial support from test environment simulation technology, which primarily refers to simulating the actual working state of the test object in a laboratory environment using specialized / general-purpose testing and excitation equipment.

[0003] On the other hand, the design technology of avionics products is developing rapidly, especially for wireless transceiver communication equipment, which increasingly adopts digital phased array technology to achieve more flexible directional control, higher data rates, and longer transmission distances. Phased array wireless transceiver communication equipment generally consists of three parts: an antenna array, a T / R module, and an intermediate frequency signal processing module. The application of digital phased array technology in wireless transceiver equipment presents significant challenges to the simulation of test environments. These challenges are mainly manifested in the following two aspects:

[0004] 1. Safety and convenience issues in experimental environment simulation

[0005] As the performance of wireless transceiver equipment gradually improves, so too does its transmission power and frequency. This often brings with it electromagnetic compatibility (EMC) issues. If a complete set of wireless transceiver equipment, including antennas, transceiver units (T / R), and intermediate frequency signal processing components, is deployed in a laboratory environment for testing, three unavoidable drawbacks exist: a) the laboratory needs a microwave anechoic chamber; b) it exposes personnel to radiation, requiring protective gear; and c) the testing process requires connection to relevant excitation / testing equipment, which in turn needs antennas, power amplifiers, and other supporting components. These three points not only reduce the safety and convenience of testing but also significantly increase costs.

[0006] 2. The accuracy of the experimental environment simulation

[0007] Due to safety and convenience issues associated with simulating laboratory testing environments, the common practice is to use wired connections instead of wireless ones. Test experiments typically require two connection methods: one is connecting the test / excitation equipment via attenuators and RF cables; the other is connecting the transmitting and receiving ends of the wireless transceiver equipment to form a closed loop via attenuators, power dividers, and RF cables. In the first case, it is frequently used for functional performance testing of the tested wireless transceiver equipment. The second case is more commonly used when conducting test experiments on wireless transceivers employing digital phased array systems, usually connecting between the T / R module and the calibration channel as a necessary connection for the wired test closed loop. The core of both connection methods is replacing wireless with wired connections. Therefore, how to make the wired connection more accurately approximate the wireless method becomes a crucial issue in wired simulation. When replacing the wireless connection method with a wired connection, setting the relevant test parameters to ensure test accuracy presents an even greater technical challenge. Summary of the Invention

[0008] This invention addresses the contradictions of unsafe environmental conditions, inaccurate parameters, and complex environment construction in laboratory settings for conducting test experiments on phased array wireless transceiver communication equipment, from the perspectives of safety, accuracy, and convenience. It aims to provide a new method for constructing experimental environments for conducting test experiments on digital phased array wireless transceiver communication equipment.

[0009] This invention proposes connection methods for specific hardware components, calculation methods for various test parameters, and their settings. Specifically, it provides a test system for wireless transceiver communication equipment, applied in a laboratory environment for testing wireless transceiver communication equipment. The system includes an intermediate frequency (IF) signal processing unit, N transceiver / receiver (T / R) components, a calibration component, a 1:N power divider, and a fixed attenuator. The IF signal processing unit comprises N+1 channel interfaces and N+1 control interfaces, where each channel interface and control interface constitute a group of interfaces, totaling N+1 groups. Each of the N groups of interfaces is connected to one end of one of the N T / R components, and each group of interfaces is connected to one end of the calibration component. The IF signal processing unit controls and signals the N T / R components and the calibration component through each group of interfaces. Transmission; the other end of the N T / R components is connected to the 1:N power divider via simulated RF cables; the calibration component calibrates the N T / R components, and the other end of the calibration component is connected to one end of the fixed attenuator; the 1:N power divider distributes power to the simulated signal, used to simulate the connection relationship between each T / R component and the calibration component in an actual product under laboratory conditions. The 1:N power divider includes one power divider calibration signal port at one end and N power divider T / R signal ports at the other end. The N power divider T / R signal ports are connected to the N T / R components via RF cables, and the power divider calibration signal port is connected to the other end of the fixed attenuator; the fixed attenuator is used to simulate the amplitude attenuation of the simulated signal. It can simulate the test closed loop of the tested wireless transceiver communication device in a wired manner instead of a wireless method under laboratory conditions. The test environment parameters are adjustable, the simulation effect is accurate, ensuring the accuracy and authenticity of the test verification, and it is not constrained by the resources required for constructing high-cost environments such as microwave anechoic chambers, making it highly practical and usable.

[0010] The specific solution of the present invention is as follows: The present invention provides a test system for wireless transceiver communication equipment, which is applied to the testing of wireless transceiver communication equipment in a laboratory environment. The system includes an intermediate frequency signal processing unit, N T / R components, a calibration component, a 1:N power divider and a fixed attenuator.

[0011] The intermediate frequency (IF) signal processing unit includes N+1 channel interfaces and N+1 control interfaces, wherein one channel interface and one control interface constitute a group of interfaces, for a total of N+1 groups of interfaces. N groups of interfaces are respectively connected to the first terminals of N T / R components, and one group of interfaces is connected to the first terminal of the calibration component. The IF signal processing unit controls and transmits signals to the N T / R components and the calibration component through each group of interfaces. The IF signal processing unit configures the attenuation error (LOSS) of each channel. Z (N), the attenuation error LOSS Z(N) The N control interfaces are used to act on the N T / R components to compensate for the attenuation error;

[0012] The second end of each of the N T / R components is connected to the 1:N power divider via analog radio frequency cables.

[0013] The calibration component calibrates the N T / R components, and the second end of the calibration component is connected to the first end of the fixed attenuator;

[0014] The 1:N power divider distributes power to the analog signal, simulating the connection relationship between the T / R components and calibration components in an actual product under laboratory conditions. The 1:N power divider includes one power divider calibration signal port at a first end and N power divider T / R signal ports at a second end. The N power divider T / R signal ports are connected to the N T / R components via RF cables. The power divider calibration signal port is connected to the second end of the fixed attenuator.

[0015] The fixed attenuator is used to simulate the amplitude attenuation of a signal; wherein, the attenuation error LOSS Z The methods for determining (N) include:

[0016] An antenna array attenuation testing system is configured. The antenna array includes N antenna terminals on top and N T / R antenna signal ports and one antenna calibration signal port on the bottom. The N antenna T / R signal ports are sequentially connected to a signal generator via RF cables. The antenna calibration signal port is connected to a spectrum analyzer via an RF cable. During testing, the signal generator acts as the transmitter, sequentially connected to each antenna T / R signal port. The antenna calibration signal port is connected to the spectrum analyzer as the receiver. The attenuation value from each antenna T / R signal port to the antenna calibration signal port is measured. The signal generator output power represents the preset value of the T / R signal port of the Nth antenna. This indicates the power received by the antenna calibration signal port when the Nth antenna T / R signal port is connected. T (N) represents the actual attenuation value from the Nth antenna T / R port 61-6N to the antenna calibration signal port, then:

[0017]

[0018] The 1:N power divider attenuation test system is configured such that the N power divider T / R signal ports are sequentially connected to a signal generator via RF cables, and the power divider calibration signal port is connected to a spectrum analyzer via an RF cable. During testing, the signal generator acts as the transmitter, sequentially connected to each power divider T / R signal port, and the power divider calibration signal port is connected to the spectrum analyzer as the receiver. The attenuation value from each power divider T / R signal port to the power divider calibration signal port is measured. The signal generator output power represents the preset value of the T / R signal port of the Nth power divider. This indicates the power received at the calibration signal port of the power divider when the Nth power divider's T / R signal port is connected. G (N) represents the actual attenuation value from the Nth T / R port of the power divider to the calibration signal port of the power divider. Therefore:

[0019]

[0020] The attenuation value at each antenna T / R signal port is calculated by combining the attenuation value at each power divider T / R signal port to obtain the attenuation error LOSS. B (N):

[0021] LOSS B (N) = LOSS T (N)-LOSS G (N) (3);

[0022] The resulting attenuation error LOSS B (N) Subtract the attenuation value from the fixed attenuator to calculate the attenuation error (LOSS) between the wired and wireless connection methods. Z (N), where LOSS GD (N) represents the attenuation value of the fixed attenuator.

[0023] LOSS Z (N) = LOSS B (N)-LOSS GD (N) (4);

[0024] This allows for the simulation of a closed-loop test of the tested wireless transceiver device using a wired method instead of a wireless method under laboratory conditions.

[0025] Furthermore, the fixed attenuator is used to simulate the transmission line attenuation from each T / R component to the calibration component in an actual product.

[0026] Preferably, the wireless transceiver communication device is a wireless communication base station, a wireless router, or a wireless terminal.

[0027] The present invention also proposes a test method for a test system based on the above-mentioned wireless transceiver communication device, the method comprising:

[0028] Step S1: Connect the signal generator as the transmitter to the T / R signal port of the first antenna, and the spectrum analyzer as the receiver to the antenna calibration signal port. Set the output frequency of the signal generator to the intermediate frequency of the test subject's working frequency, and the transmit power to the average working power value of the test subject. Measure the received power of the spectrum analyzer, subtract the transmit power from the received power value, and use expression (1) to calculate the attenuation value from the T / R signal port of the first antenna to the antenna calibration signal port as LOSS. T (1); Then, change the connection position of the signal transmitter, traverse the remaining antenna T / R signal ports, and use expression (1) to calculate the attenuation value from the remaining antenna T / R signal port to the antenna calibration signal port, thus obtaining N attenuation values ​​from the antenna T / R signal port to the antenna calibration signal port: LOSS T (1)-LOSS T (N);

[0029] Step S2: Using a signal generator as the transmitter, connect it to the first T / R signal port of the power divider. Use a spectrum analyzer as the receiver, connect it to the calibration signal port of the power divider. Set the output frequency of the signal generator to the intermediate frequency of the test subject's working frequency, and the transmit power to the average working power value of the test subject. Measure the received power of the spectrum analyzer. Subtract the transmit power from the received power value and use expression (2) to calculate the attenuation value (LOSS) from the first T / R signal port of the power divider to the calibration signal port of the power divider. G (1); Then, change the connection position of the signal transmitter, traverse the T / R signal ports of the remaining power dividers, and use expression (2) to calculate the attenuation value from the T / R signal port of each power divider to the calibration signal port of the power divider, thereby obtaining N attenuation values ​​LOSS from the T / R signal port of each power divider to the calibration signal port of the power divider. G (1)-LOSS G (N);

[0030] Step S3: Subtract the attenuation value of each antenna T / R signal port from the attenuation value of each power divider T / R signal port to obtain the attenuation error LOSS. B (N):

[0031] LOSS B (N) = LOSS T (N)-LOSS G (N) (3);

[0032] The obtained attenuation error is then subtracted from the attenuation value of the fixed attenuator to calculate the attenuation error LOSS between wired and wireless connections. Z(N), LOSS GD (N) represents the attenuation value of the fixed attenuator.

[0033] LOSS Z (N) = LOSS B (N)-LOSS GD (N) (4);

[0034] Step S4: Configure the attenuation error LOSS of each channel through the control software in the intermediate frequency signal processing unit. Z (N), the attenuation error LOSS Z (N) The N control interfaces are used to act on the N T / R components to compensate for the attenuation error.

[0035] The technical effects of this invention are as follows: This invention proposes a test system and method for testing wireless transceiver communication devices, applied to the testing of wireless transceiver communication devices in a laboratory environment. The system includes an intermediate frequency (IF) signal processing unit, N transceiver / receiver (T / R) components, a calibration component, a 1:N power divider, and a fixed attenuator. The IF signal processing unit includes N+1 channel interfaces and N+1 control interfaces, wherein one channel interface and one control interface constitute a group of interfaces, for a total of N+1 groups of interfaces. Each of the N groups of interfaces is connected to one end of one of the N T / R components, and one group of interfaces is connected to one end of the calibration component. The IF signal processing unit controls and transmits signals to the N T / R components and the calibration component through each group of interfaces. The other end of the T / R component is connected to the 1:N power divider via a simulated RF cable. The calibration component calibrates the N T / R components, and its other end is connected to one end of the fixed attenuator. The 1:N power divider distributes power to the simulated signal, simulating the connection relationship between the T / R components and the calibration component in an actual product under laboratory conditions. The 1:N power divider includes one power divider calibration signal port at one end and N power divider T / R signal ports at the other end. The N power divider T / R signal ports are connected to the N T / R components via RF cables, and the power divider calibration signal port is connected to the other end of the fixed attenuator. The fixed attenuator is used to simulate the amplitude attenuation of the simulated signal. This method can simulate the test closed loop of a wireless transceiver device under laboratory conditions using a wired method instead of a wireless method. The test environment parameters are adjustable, the simulation effect is accurate, ensuring the accuracy and authenticity of the test verification. It is not constrained by the resource limitations of constructing high-cost environments such as microwave anechoic chambers, making it highly practical and usable. Furthermore, it proposes specific methods for calculating test parameters. Attached Figure Description

[0036] Other features, objects, and advantages of this application will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0037] Figure 1 This is a schematic block diagram of the test system for the wireless transceiver communication device of the present invention;

[0038] Figure 2 This is a block diagram of the attenuation test of the 1:N power divider of the present invention;

[0039] Figure 3 This is a block diagram of the antenna array attenuation test of the present invention;

[0040] Figure 4 This is a flowchart of the testing method of the present invention. Detailed Implementation

[0041] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0042] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0043] like Figure 1 As shown, the present invention aims to provide a test system for wireless transceiver communication devices, which is applied to the testing of wireless transceiver communication devices in a laboratory environment. The system includes an intermediate frequency signal processing unit 1, N T / R components 21-2N, a calibration component 3, a 1:N power divider 4, and a fixed attenuator 5.

[0044] The intermediate frequency (IF) signal processing unit 1 is the control core of the wireless transceiver communication device. Its main functions are to perform analog-to-digital and digital-to-analog conversion on the transmitted and received signals, process the IF digital signals, and control and manage the wireless transceiver communication device. The IF signal processing unit 1 includes N+1 channel interfaces and N+1 control interfaces. Each channel interface and each control interface constitutes a group of interfaces, for a total of N+1 groups. The N groups of interfaces are connected to one end of each of the N T / R components 21-2N, and one group of interfaces is connected to one end of the calibration component 3. The IF signal processing unit 1 controls and transmits signals to the N T / R components 21-2N and the calibration component 3 through these interfaces.

[0045] T / R component group 2 includes T / R components 1-N21-2N, which are used for digital transmission and reception with the intermediate frequency signal processing unit, and perform analog-to-digital and digital-to-analog conversion, as well as filtering, amplification, up-conversion and down-conversion of analog signals. The other end of the N T / R components 21-2N is connected to the 1:N power divider 4 via analog radio frequency cables. The other T / R components 22-2N are structurally identical and functionally identical to the first T / R component 21.

[0046] The calibration component 3 calibrates the N T / R components 21-2N. The other end of the calibration component 3 is connected to the first end of the fixed attenuator 5. The calibration component 3 realizes the calibration function of the N T / R components 21-2N. When transmitting, the calibration component 3 acts as a receiver, receiving the transmitted signals of each T / R component 21-2N and comparing the phase and amplitude. When receiving, the calibration component 3 acts as a transmitter, transmitting a standard signal to each T / R component 21-2N. Each T / R component 21-2N then transmits its own information to the intermediate frequency signal processing unit 1 for amplitude and phase comparison, and finally realizes the amplitude and phase consistency calibration of each T / R component 21-2N.

[0047] The 1:N power divider 4 distributes power to the analog signal, simulating the connection relationship between each T / R component 21-2N and the calibration component 3 in an actual product under laboratory conditions. The 1:N power divider 4 includes one power divider calibration signal port at the first end and N power divider T / R signal ports at the second end. The N power divider T / R signal ports are connected to the N T / R components 21-2N via RF cables. The power divider calibration signal port is connected to the second end of the fixed attenuator 5. The 1:N power divider 4 realizes the power distribution of the analog signal, simulating the connection relationship between each T / R component 21-2N and the calibration component 3 in an actual product under laboratory conditions.

[0048] The fixed attenuator 5 is used to attenuate the amplitude of the analog signal. The fixed attenuator 5 realizes the amplitude attenuation of the analog signal and its function is to simulate the attenuation of the transmission line from each T / R component 21-2N to the calibration component 3 in the actual product, and plays an adjustment role.

[0049] In one embodiment, the fixed attenuator 5 is used to simulate the transmission line attenuation from each T / R component 21-2N to the calibration component 3 in an actual product.

[0050] In one embodiment, the attenuation error LOSS of each channel is configured by the control software 11 in the intermediate frequency signal processing unit 1. Z (N), the attenuation error LOSS Z (N) The N control interfaces are used to act on the N T / R components 21-2N to compensate for the attenuation error.

[0051] In order to configure the system of the present invention, the attenuation error LOSS is calculated. Z (N) is a crucial step, and the specific calculation method is as follows:

[0052] Configure an antenna array attenuation testing system, such as Figure 2 As shown, the antenna array includes N antenna terminals above and N antenna T / R signal ports 61-6N and one antenna calibration signal port 6N+1 below. The N antenna T / R signal ports 61-6N are sequentially connected to a signal generator 8 via RF cables. The antenna calibration signal port 6N+1 is connected to a spectrum analyzer 7 via an RF cable. During testing, the signal generator 8 acts as the transmitter, sequentially connected to each antenna T / R signal port 61-6N. The antenna calibration signal port 6N+1 is connected to the spectrum analyzer 7 as the receiver. The attenuation value from each antenna T / R signal port 61-6N to the antenna calibration signal port 6N+1 is measured. The output power of signal generator 8 represents the preset value of the T / R signal port 61-6N of the Nth antenna. This indicates the power received at antenna calibration signal port 6N+1 when the Nth antenna T / R signal port 61-6N is connected. T (N) represents the actual attenuation value from the Nth antenna T / R port 61-6N to the antenna calibration signal port 6N+1, then:

[0053]

[0054] Configure the 1:N power divider 4 attenuation test system as follows: Figure 3 As shown, one power divider calibration signal port 4N+1 is located above the 1:N power divider 4, and N power divider T / R signal ports 41-4N are located below the 1:N power divider 4. The N power divider T / R signal ports 41-4N are sequentially connected to a signal generator 8 via RF cables. The power divider calibration signal port 4N+1 is connected to a spectrum analyzer 7 via an RF cable. During testing, the signal generator 8 acts as the transmitter and is sequentially connected to each power divider T / R signal port 41-4N. The power divider calibration signal port 4N+1 is connected to the spectrum analyzer 7 as the receiver. The attenuation value from each power divider T / R signal port 41-4N to the power divider calibration signal port 4N+1 is measured. The output power of signal generator 8 represents the preset value of the T / R signal port 41-4N of the Nth power divider. This indicates the power received at the power divider calibration signal port 4N+1 when the Nth power divider's T / R signal ports 41-4N are connected. G (N) represents the actual attenuation value from the Nth T / R port of the power divider to the power divider calibration signal port 4N+1, then:

[0055]

[0056] The attenuation value at each antenna T / R signal port 61-6N is subtracted from the attenuation value at each power divider T / R signal port 41-4N to obtain the attenuation error LOSS. B (N):

[0057] LOSS B (N) = LOSS T (N)-LOSS G (N) (3);

[0058] The resulting attenuation error LOSS B (N) Subtract the attenuation value from the fixed attenuator 5 to calculate the attenuation error (LOSS) between the wired and wireless connection methods. Z (N), where LOSS GD (N) represents the attenuation value of fixed attenuator 5.

[0059] LOSS Z (N) = LOSS B (N)-LOSS GD (N) (4).

[0060] The system of this invention can simulate the test closed loop of the wireless transceiver communication device under laboratory conditions using a wired method instead of a wireless method. The test environment parameters are adjustable, the simulation effect is accurate, and the accuracy and authenticity of the test verification are guaranteed. Moreover, it is not constrained by the resources of constructing high-cost environments such as microwave anechoic chambers, making it highly practical and usable. Furthermore, it proposes a specific method for calculating test parameters, namely, a specific method for calculating the attenuation value. The attenuation value calculated by this method can make the simulation effect more accurate, which is the key inventive point of this invention.

[0061] like Figure 4 As shown, the present invention also proposes a testing method based on the above-described system, according to... Figure 1-3 After the connection relationships of each component are established, the method of the present invention can be executed, specifically including the following steps.

[0062] Step S1: Calculate the N attenuation values ​​from the T / R signal port of each antenna to the antenna calibration signal port; specifically: use a signal generator as the transmitter, connect it to the T / R signal port of the first antenna, and use a spectrum analyzer as the receiver, connect it to the antenna calibration signal port. Set the output frequency of the signal generator to the intermediate frequency of the test subject's working frequency, and the transmit power to the average working power value of the test subject. Measure the received power of the spectrum analyzer, subtract the transmit power from the received power value, and use expression (1) to calculate the attenuation value from the T / R signal port of the first antenna to the antenna calibration signal port as LOSS.T (1); Then, change the connection position of the signal transmitter, traverse the remaining antenna T / R signal ports, and use expression (1) to calculate the attenuation value from the remaining antenna T / R signal port to the antenna calibration signal port, thus obtaining N attenuation values ​​from the antenna T / R signal port to the antenna calibration signal port: LOSS T (1)-LOSS T (N);

[0063] Step S2: N attenuation values ​​from the T / R signal port of each power divider to the calibration signal port of the power divider; specifically: using a signal generator as the transmitter, connected to the first T / R signal port of the power divider, and a spectrum analyzer as the receiver, connected to the calibration signal port of the power divider; setting the output frequency of the signal generator to the intermediate frequency of the test subject's working frequency, the transmit power to the average working power value of the test subject, measuring the received power of the spectrum analyzer, subtracting the transmit power from the received power value, and using expression (2) to calculate the attenuation value LOSS from the T / R signal port of the first power divider to the calibration signal port of the power divider. G (1); Then, change the connection position of the signal transmitter, traverse the T / R signal ports of the remaining power dividers, and use expression (2) to calculate the attenuation value from the T / R signal port of each power divider to the calibration signal port of the power divider, thereby obtaining N attenuation values ​​LOSS from the T / R signal port of each power divider to the calibration signal port of the power divider. G (1)-LOSS G (N);

[0064] Step S3: Calculate the attenuation error between wired and wireless connections; specifically, subtract the attenuation value of each antenna's T / R signal port from the attenuation value of each power divider's T / R signal port to obtain the attenuation error LOSS. B (N):

[0065] LOSS B (N) = LOSS T (N)-LOSS G (N) 3;

[0066] The obtained attenuation error is then subtracted from the attenuation value of the fixed attenuator to calculate the attenuation error LOSS between wired and wireless connections. Z (N), LOSS GD (N) represents the attenuation value of the fixed attenuator.

[0067] LOSS Z (N) = LOSS B (N)-LOSS GD (N) 4;

[0068] Step S4: Compensate the N T / R components based on the attenuation error; specifically, configure the attenuation error LOSS of each channel through the control software in the intermediate frequency signal processing unit. Z (N), the attenuation error LOSS Z (N) The N control interfaces are used to act on the N T / R components to compensate for the attenuation error.

[0069] The method of this invention can simulate the test closed loop of the wireless transceiver communication device under laboratory conditions using a wired method instead of a wireless method. The test environment parameters are adjustable, the simulation effect is accurate, and the accuracy and authenticity of the test verification are guaranteed. Moreover, it is not constrained by the resources of constructing high-cost environments such as microwave anechoic chambers, making it highly practical and usable. Furthermore, it proposes a specific method for calculating test parameters, namely, a specific method for calculating the attenuation value. The attenuation value calculated by this method can make the simulation effect more accurate, which is the important inventive point of this invention.

[0070] Finally, it should be noted that the above embodiments are for illustration only and not for limiting the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention without departing from the spirit and scope of the present invention. Any modifications or partial substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A test system for wireless transceiver communication devices, used for testing wireless transceiver communication devices in a laboratory environment, characterized in that: The system includes an intermediate frequency signal processing unit, N T / R components, a calibration component, a 1:N power divider, and a fixed attenuator. The intermediate frequency (IF) signal processing unit includes N+1 channel interfaces and N+1 control interfaces, wherein one channel interface and one control interface constitute a group of interfaces, for a total of N+1 groups of interfaces. N groups of interfaces are respectively connected to the first terminals of N T / R components, and one group of interfaces is connected to the first terminal of the calibration component. The IF signal processing unit controls and transmits signals to the N T / R components and the calibration component through each group of interfaces. The IF signal processing unit configures the attenuation error (LOSS) of each channel. Z (N), the attenuation error LOSS Z (N) The N control interfaces are used to act on the N T / R components to compensate for the attenuation error; The second end of each of the N T / R components is connected to the 1:N power divider via analog radio frequency cables. The calibration component calibrates the N T / R components, and the second end of the calibration component is connected to the first end of the fixed attenuator; The 1:N power divider distributes power to the analog signal, simulating the connection relationship between the T / R components and calibration components in an actual product under laboratory conditions. The 1:N power divider includes one power divider calibration signal port at a first end and N power divider T / R signal ports at a second end. The N power divider T / R signal ports are connected to the N T / R components via RF cables. The power divider calibration signal port is connected to the second end of the fixed attenuator. The fixed attenuator is used to simulate the amplitude attenuation of a signal; wherein, the attenuation error LOSS Z The methods for determining (N) include: An antenna array attenuation testing system is configured. The antenna array includes N antenna terminals on top and N T / R antenna signal ports and one antenna calibration signal port on the bottom. The N antenna T / R signal ports are sequentially connected to a signal generator via RF cables. The antenna calibration signal port is connected to a spectrum analyzer via an RF cable. During testing, the signal generator acts as the transmitter, sequentially connected to each antenna T / R signal port. The antenna calibration signal port is connected to the spectrum analyzer as the receiver. The attenuation value from each antenna T / R signal port to the antenna calibration signal port is measured. The signal generator output power represents the preset value of the T / R signal port of the Nth antenna. This indicates the power received by the antenna calibration signal port when the Nth antenna T / R signal port is connected. T (N) represents the actual attenuation value from the Nth antenna T / R port 61-6N to the antenna calibration signal port, then: The 1:N power divider attenuation test system is configured such that the N power divider T / R signal ports are sequentially connected to a signal generator via RF cables, and the power divider calibration signal port is connected to a spectrum analyzer via an RF cable. During testing, the signal generator acts as the transmitter, sequentially connected to each power divider T / R signal port, and the power divider calibration signal port is connected to the spectrum analyzer as the receiver. The attenuation value from each power divider T / R signal port to the power divider calibration signal port is measured. The signal generator output power represents the preset value of the T / R signal port of the Nth power divider. This indicates the power received at the calibration signal port of the power divider when the Nth power divider's T / R signal port is connected. G (N) represents the actual attenuation value from the Nth T / R port of the power divider to the calibration signal port of the power divider. Therefore: The attenuation value at each antenna T / R signal port is calculated by combining the attenuation value at each power divider T / R signal port to obtain the attenuation error LOSS. B (N): LOSS B (N)=LOSS T (N)-LOSS G (N) (3); The resulting attenuation error LOSS B (N) Subtract the attenuation value from the fixed attenuator to calculate the attenuation error (LOSS) between the wired and wireless connection methods. Z (N), where LOSS GD (N) represents the attenuation value of the fixed attenuator. LOSS Z (N)=LOSS B (N)-LOSS GD (N) (4); This allows for the simulation of a closed-loop test of the tested wireless transceiver device using a wired method instead of a wireless method under laboratory conditions.

2. The test system for the wireless transceiver communication device according to claim 1, characterized in that, The fixed attenuator is used to simulate the transmission line attenuation from each T / R component to the calibration component in an actual product.

3. The test system for the wireless transceiver communication device according to claim 2, characterized in that, The wireless transceiver communication device is a wireless communication base station, a wireless router, or a wireless terminal.

4. A test method for a test system based on the wireless transceiver communication device according to any one of claims 1-3, characterized in that, The method includes: Step S1: Connect the signal generator as the transmitter to the T / R signal port of the first antenna, and the spectrum analyzer as the receiver to the antenna calibration signal port. Set the output frequency of the signal generator to the intermediate frequency of the test subject's working frequency, and the transmit power to the average working power value of the test subject. Measure the received power of the spectrum analyzer, subtract the transmit power from the received power value, and use expression (1) to calculate the attenuation value from the T / R signal port of the first antenna to the antenna calibration signal port as LOSS. T (1); Then, change the connection position of the signal transmitter, traverse the remaining antenna T / R signal ports, and use expression (1) to calculate the attenuation value from the remaining antenna T / R signal port to the antenna calibration signal port, thus obtaining N attenuation values ​​from the antenna T / R signal port to the antenna calibration signal port: LOSS T (1)-LOSS T (N); Step S2: Using a signal generator as the transmitter, connect it to the first T / R signal port of the power divider. Use a spectrum analyzer as the receiver, connect it to the calibration signal port of the power divider. Set the output frequency of the signal generator to the intermediate frequency of the test subject's working frequency, and the transmit power to the average working power value of the test subject. Measure the received power of the spectrum analyzer. Subtract the transmit power from the received power value and use expression (2) to calculate the attenuation value (LOSS) from the first T / R signal port of the power divider to the calibration signal port of the power divider. G (1); Then, change the connection position of the signal transmitter, traverse the T / R signal ports of the remaining power dividers, and use expression (2) to calculate the attenuation value from the T / R signal port of each power divider to the calibration signal port of the power divider, thereby obtaining N attenuation values ​​LOSS from the T / R signal port of each power divider to the calibration signal port of the power divider. G (1)-LOSS G (N); Step S3: Subtract the attenuation value of each antenna T / R signal port from the attenuation value of each power divider T / R signal port to obtain the attenuation error LOSS. B (N): LOSS B (N)=LOSS T (N)-LOSS G (N) (3); The obtained attenuation error is then subtracted from the attenuation value of the fixed attenuator to calculate the attenuation error LOSS between wired and wireless connections. Z (N), LOSS GD (N) represents the attenuation value of the fixed attenuator. LOSS Z (N)=LOSS B (N)-LOSS GD (N) (4); Step S4: Configure the attenuation error LOSS of each channel through the control software in the intermediate frequency signal processing unit. Z (N), the attenuation error LOSS Z (N) The N control interfaces are used to act on the N T / R components to compensate for the attenuation error.

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