Active phased array transmit-receive assembly testing device based on antenna tool

Abstract

The utility model relates to an active phased array transmit-receive assembly testing device based on an antenna tool. The testing device comprises a microwave camera obscura, a switching tool, a passive antenna tool, two pairs of laser sighting devices, a mechanical arm and a signal processing assembly. The bottom of the microwave camera obscura is provided with a liftable support and a positioning pin hole. The switching tool or the passive antenna tool is installed on the liftable support. Positioning pins are arranged at the bottom of the switching tool or the passive antenna tool; the positioning pins are aligned with positioning pin holes in the bottom of the microwave camera obscura; the two pairs of laser sighting devices are arranged at one corner of the switching tool or the passive antenna tool and are placed at an angle of 45 degrees; the mechanical arm body is located on one side in the microwave camera obscura. The signal processing assembly is located outside the microwave camera obscura; the mechanical arm clamping jaw is provided with an antenna probe and a calibration block; the to-be-tested T / R assembly is electrically connected with the signal processing assembly through the switching tool, and the passive antenna tool is electrically connected with the signal processing assembly. The active phased array transmit-receive assembly testing device based on the antenna tool is realized.

Description

Technical Field

[0001] This utility model relates to the field of transceiver component testing technology based on space feeding technology, and in particular to an active phased array transceiver component testing device based on antenna fixtures. Background Technology

[0002] For cases where the antenna and T / R components are integrated with the printed circuit board or soldered together, it is necessary to perform complete testing on the T / R components with integrated antennas. During testing, since the interfaces of T / R components for different signals are different, it is necessary to build a test system for different models of transceiver components, resulting in poor versatility of the test system. Utility Model Content

[0003] Based on the above analysis, this utility model aims to provide a test device for active phased array transceiver components based on antenna fixtures, in order to solve the problem of poor universality of existing test devices for transceiver components with integrated antennas due to different interfaces.

[0004] The objective of this utility model is mainly achieved through the following technical solutions:

[0005] The active phased array transceiver component test device based on antenna fixture includes a microwave anechoic chamber, a transfer fixture, a passive antenna fixture, two pairs of laser sights, a robotic arm, and a signal processing component.

[0006] The bottom of the microwave darkroom is equipped with a liftable support and positioning pin holes;

[0007] The adapter fixture or passive antenna fixture is mounted on a liftable bracket; the bottom of the adapter fixture or passive antenna fixture has a positioning pin at the same position, which is aligned with the positioning pin hole at the bottom of the microwave anechoic chamber; two pairs of laser sights are mounted at one corner of the adapter fixture or passive antenna fixture, placed at a 45° angle; the robotic arm body is located on one side inside the microwave anechoic chamber; the signal processing component is located outside the microwave anechoic chamber; the robotic arm gripper has an antenna probe and a calibration block; the T / R component under test is electrically connected to the signal processing component through the adapter fixture, and the passive antenna fixture is electrically connected to the signal processing component.

[0008] Furthermore, the signal processing components include a switching attenuation component, a switching amplification component, a vector network analyzer, and a control unit. The control unit is connected to the vector network analyzer, the robotic arm, the switching amplification component, and the switching attenuation component via an Ethernet interface. One end of the switching amplification component is connected to a T / R component adapter or a passive antenna adapter, and the other end is connected to the signal input / output port of the vector network analyzer. One end of the switching attenuation component is connected to the antenna probe, and the other end is connected to the signal input port of the vector network analyzer.

[0009] Furthermore, the switching amplification assembly includes a discrete component module and a first control board; the discrete component module includes a first single-pole double-throw relay, a first directional amplifier, a second directional amplifier, a second single-pole double-throw relay, a power divider, and multiple single-pole single-throw relays;

[0010] The input terminal of the first directional amplifier is connected to the normally closed contact of the first single-pole double-throw relay, and the output terminal is connected to the normally closed contact of the second single-pole double-throw relay; the input terminal of the second directional amplifier is connected to the normally open contact of the second single-pole double-throw relay, and the output terminal is connected to the normally open contact of the first single-pole double-throw relay; the stationary terminal of the first single-pole double-throw relay serves as the input and output ports of the switching amplifier assembly; the stationary terminal of the second single-pole double-throw relay is connected to one end of the power divider, and multiple ports at the other end of the power divider are respectively connected to the SMA connector of the adapter fixture through a single-pole single-throw relay;

[0011] The first control board is electrically connected to the first single-pole double-throw relay, the first single-pole double-throw relay, and each single-pole single-throw relay.

[0012] Furthermore, the first control board includes an FPGA chip, a digital driver chip, and a first connector. The output pins of the FPGA chip are connected to the digital driver chip; the output pins of the digital driver chip are connected to the first connector; and the output cables of the first connector are connected to the first and second single-pole double-throw relays and multiple single-pole single-throw relays.

[0013] Furthermore, the adapter is equipped with an upward positioning pin; the T / R component under test is equipped with a positioning hole; the upward positioning pin of the adapter is installed in the positioning hole of the T / R component under test; the T / R component under test is installed into the threaded hole of the adapter by screws.

[0014] Furthermore, the bottom of the microwave anechoic chamber has a threaded through hole on the liftable bracket, and the adapter or passive antenna fixture is installed on the liftable bracket by screws.

[0015] Furthermore, the two pairs of laser sights include an XOZ-plane laser sight and a YOZ-plane laser sight; both the XOZ-plane laser sight and the YOZ-plane laser sight include a laser emitter and a laser receiver; the laser beam direction in the XOZ-plane laser sight is perpendicular to the XOZ-plane; the laser beam direction in the YOZ-plane laser sight is perpendicular to the YOZ-plane.

[0016] Furthermore, the calibration block includes an XOZ surface calibration block and a YOZ surface calibration block; the XOZ surface calibration block and the YOZ surface calibration block are two rectangular pieces placed perpendicular to each other; one side of the two rectangular pieces is joined to form an L-shape; the top of the XOZ surface calibration block and the YOZ surface calibration block are fixed to the gripper of the robotic arm by a mounting plate; the XOZ surface calibration block is placed parallel to the XOZ surface, and the YOZ surface calibration block is placed parallel to the YOZ surface; wherein, the mounting surface of the adapter tool is the XOY plane, the direction from left to right on the mounting surface of the adapter tool is the positive X-axis direction, the direction from bottom to top on the mounting surface of the adapter tool is the positive Y-axis direction, and the direction perpendicular to the mounting surface of the adapter tool is the positive Z-axis direction; the XOZ surface calibration block has two slits parallel to the X-axis and Z-axis respectively, and the YOZ surface calibration block has one slit parallel to the Z-axis.

[0017] Furthermore, the inner surface of the microwave anechoic chamber is covered with a soft polyurethane pyramidal microwave absorbing material.

[0018] Furthermore, the robotic arm uses the Z-ARM 1632 model.

[0019] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0020] 1. This utility model discloses an active phased array transceiver component testing device based on antenna fixture. By setting a liftable bracket in a microwave anechoic chamber and setting an adapter fixture on the liftable bracket, the device achieves interface universality, making it applicable to the testing of transceiver components with integrated antennas for various signals.

[0021] 2. This utility model discloses a test device for an active phased array transceiver component based on antenna fixtures. Two pairs of laser sights include an XOZ-plane laser sight and a YOZ-plane laser sight. Both the XOZ-plane and YOZ-plane laser sights include a laser transmitter and a laser receiver. The laser beam direction in the XOZ-plane laser sight is perpendicular to the XOZ-plane; the laser beam direction in the YOZ-plane laser sight is perpendicular to the YOZ-plane. The calibration blocks include an XOZ-plane calibration block and a YOZ-plane calibration block. The tops of the XOZ-plane and YOZ-plane calibration blocks are fixed to the gripper of a robotic arm via a mounting plate. The XOZ-plane calibration block is placed parallel to the XOZ-plane, and the YOZ-plane calibration block is placed parallel to the YOZ-plane. The XOZ-plane calibration block has two slits parallel to the X-axis and Z-axis respectively, and the YOZ-plane calibration block has one slit parallel to the Z-axis. The cooperation between the laser sights and the calibration blocks ensures the accuracy and repeatability of multiple tests.

[0022] 3. This utility model discloses an active phased array transceiver component testing device based on an antenna fixture, comprising a passive antenna fixture; the passive antenna fixture includes an antenna array identical to the T / R component under test and an SMA connector and adapter cable identical to those on the adapter fixture; the adapter cable includes an adapter cable from the SMA connector to the switching amplifier component; the passive antenna fixture is used in the test link to replace the adapter fixture and the T / R component under test to obtain data results on the influence of antenna array elements on the open feed test. This achieves an accurate and reliable T / R component testing device based on an open feed.

[0023] 4. The switching amplification component of the signal processing component of the active phased array transceiver component testing device based on antenna fixture of this utility model includes discrete component modules and a first control board; the discrete component modules are connected by radio frequency cables. The first control board includes an FPGA chip, a digital driver chip, and a first connector. The output pins of the FPGA chip are connected to the digital driver chip; the output pins of the digital driver chip are connected to the first connector; the output cables of the first connector are connected to first and second single-pole double-throw relays and multiple single-pole single-throw relays. The combination of discrete component modules and the first control board ensures the reliability of the testing device.

[0024] 5. This utility model discloses an active phased array transceiver component testing device based on an antenna fixture. The adapter fixture is equipped with positioning pins at both the top and bottom, enabling precise installation of the transceiver component and the microwave anechoic chamber in the horizontal direction (XOZ plane). The passive antenna fixture also has positioning pins at the bottom, achieving precise installation of the transceiver component and the microwave anechoic chamber in the horizontal direction (XOZ plane). A liftable bracket is provided at the bottom of the microwave anechoic chamber, ensuring consistency in the Z-axis position of the transceiver component and the antenna elements on the passive antenna fixture. The passive antenna fixture is used to calibrate test results affected by the antenna, realizing a precise active phased array transceiver component testing device.

[0025] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing this invention. The objectives and other advantages of this invention can be realized and obtained from the details specifically pointed out in the text and accompanying drawings. Attached Figure Description

[0026] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0027] Figure 1 This is a schematic diagram showing the positions of the laser sight and the device under test in a test device for an active phased array transceiver component based on antenna fixtures.

[0028] Figure 2 This is a schematic diagram of the structure of a test device for an active phased array transceiver component based on antenna fixtures.

[0029] Figure 3 This is a schematic diagram showing the connection relationship of the switch amplifier component in the test device for an active phased array transceiver component based on antenna fixtures.

[0030] Figure 4 This is a schematic diagram showing the connection relationship of the switching attenuation components in a test device for an active phased array transceiver component based on antenna fixtures.

[0031] Figure 5 This is a schematic diagram of the adapter fixture structure of the active phased array transceiver component test device based on antenna fixture;

[0032] Figure 6 This is a schematic diagram of the main view of the calibration block of the test device for an active phased array transceiver component based on antenna fixtures;

[0033] Figure 7 This is a side view of the calibration block of the test device for an active phased array transceiver component based on antenna fixtures.

[0034] Figure 8 This is a top view schematic diagram of the calibration block of the test device for an active phased array transceiver component based on antenna fixtures.

[0035] Figure label:

[0036] Laser emitter in a 1-XOZ surface laser sight;

[0037] Laser receiver in a 2-XOZ surface laser sight;

[0038] Laser receiver in a 3-YOZ surface laser sight;

[0039] Laser emitter in a 4-YOZ surface laser sight. Detailed Implementation

[0040] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0041] A specific embodiment of this utility model discloses a testing device for an active phased array transceiver component based on antenna fixtures, such as... Figure 2 As shown. The test setup includes a microwave anechoic chamber, an adapter fixture, a passive antenna fixture, two pairs of laser sights, a robotic arm, and a signal processing component;

[0042] The bottom of the microwave darkroom is equipped with a liftable support and positioning pin holes;

[0043] The adapter fixture or passive antenna fixture is mounted on a liftable bracket; the bottom of the adapter fixture or passive antenna fixture has a positioning pin at the same position, which is aligned with the positioning pin hole at the bottom of the microwave anechoic chamber; two pairs of laser sights are mounted at one corner of the adapter fixture or passive antenna fixture, placed at a 45° angle; the robotic arm body is located on one side inside the microwave anechoic chamber; the signal processing component is located outside the microwave anechoic chamber; the robotic arm gripper has an antenna probe and a calibration block; the T / R component under test is electrically connected to the signal processing component through the adapter fixture, and the passive antenna fixture is electrically connected to the signal processing component.

[0044] Specifically, the microwave anechoic chamber provides a calibrable electromagnetic shielding environment for space power supply testing, reducing interference from external electromagnetic fields on the tests conducted inside the chamber. The bottom of the microwave anechoic chamber features a partially open design at the mounting point for the adapter fixture, facilitating the connection of the adapter fixture and passive antenna fixture's external cables to the integrated control unit or switching amplifier assembly outside the microwave anechoic chamber.

[0045] The antenna probe inside the microwave anechoic chamber is used to transmit the feed power of the vector network analyzer port into space during the receive test, and the T / R module under test completes the reception. During the transmit test, it is used to receive the transmit power of the T / R module under test and transmit it to the vector network analyzer after attenuation by the switching attenuation component, so as to perform closed-loop air feed test.

[0046] The robotic arm inside the microwave anechoic chamber is used to align the antenna probe with the open antenna array element on the test component according to the programmable instructions issued by the integrated control computer (maintaining a certain distance between the antenna probe and the antenna of the T / R component under test), and to coordinate with the laser aiming device on the adapter for calibration, ensuring that the distance and horizontal position (X,Y) between the antenna probe and the T / R component under test have sufficient repeatability after the robotic arm moves multiple times during the test.

[0047] The passive antenna fixture includes the same antenna array as the T / R component under test, as well as the same SMA connector and adapter cable as the adapter fixture; the adapter cable is used to connect the SMA connector to the switching amplifier component; the passive antenna fixture is used in the test link to replace the adapter fixture and the T / R component under test to obtain data results on the influence of the antenna array elements on the open feed test.

[0048] Specifically, to improve the accuracy of the open-feed test, before or after the test, a passive antenna fixture with a passive antenna module identical to the antenna elements on the T / R component under test is installed on the adjustable support of the microwave anechoic chamber, replacing the adapter fixture and the T / R component under test. The spatial position of the antenna elements is consistent with that of the T / R component under test, and the SMA / K connection cable corresponding to each antenna element is installed on the corresponding SMA / J interface of the switching amplifier component (the correspondence is completely consistent with that of the T / R component under test). The passive antenna fixture test is then performed again according to the above test method for the receiving and transmitting links of the T / R component under test, and the data is recorded. By comparing the data of the T / R component under test with the data of the passive antenna fixture, the influence of the antenna elements on the open-feed test can be eliminated, and accurate transmit and receive link performance indicators of the T / R component under test can be obtained.

[0049] The signal processing components include a switching attenuation component, a switching amplification component, a vector network analyzer, and a control unit. The control unit is connected to the vector network analyzer, the robotic arm, the switching amplification component, and the switching attenuation component via an Ethernet interface. One end of the switching amplification component is connected to a T / R component adapter or a passive antenna adapter, and the other end is connected to the signal input / output port of the vector network analyzer. One end of the switching attenuation component is connected to the antenna probe, and the other end is connected to the signal input port of the vector network analyzer.

[0050] Specifically, the integrated control unit is one of the core components of the entire test. Its core is an industrial computer used to coordinate and communicate with all other components in the entire test system. Through its internal I / O controller, which uses a CPCI board, it realizes the logic control of the T / R component under test. Through its internal standard programmable power supply, it realizes the controllable power supply of the T / R component under test. Through the industrial Ethernet RJ45 interface, it realizes communication and control with the vector network analyzer, robotic arm, switching amplifier component, and switching attenuation component. The integrated control unit processes the test data results and stores them on the local hard drive.

[0051] The vector network analyzer is a conventional two-port microwave / RF test and measurement instrument used to perform S-parameter testing, gain compression testing, and noise figure testing of two-port networks based on the integrated control unit's programmable instructions and the analyzer's internal hardware and software. (S-parameter testing is a basic function of the vector network analyzer; gain compression and noise figure testing can be performed directly with the vector network analyzer when equipped with relevant options.)

[0052] The discrete component module connection relationship of the switching amplifier assembly is as follows: Figure 3 As shown.

[0053] The switching amplifier assembly includes a discrete component module and a first control board; the discrete component module includes a first single-pole double-throw relay, a first directional amplifier, a second directional amplifier, a second single-pole double-throw relay, a multi-channel power divider, and multiple single-pole single-throw relays;

[0054] The input terminal of the first directional amplifier is connected to the normally closed contact of the first single-pole double-throw relay, and the output terminal is connected to the normally closed contact of the second single-pole double-throw relay; the input terminal of the second directional amplifier is connected to the normally open contact of the second single-pole double-throw relay, and the output terminal is connected to the normally open contact of the first single-pole double-throw relay; the stationary terminal of the first single-pole double-throw relay serves as the input and output ports of the switching amplifier assembly; the stationary terminal of the second single-pole double-throw relay is connected to one end of the power divider, and multiple ports at the other end of the power divider are respectively connected to the SMA connector of the adapter fixture through a single-pole single-throw relay;

[0055] The first control board is electrically connected to the first single-pole double-throw relay, the first single-pole double-throw relay, and each single-pole single-throw relay.

[0056] Specifically, the system includes a first single-pole double-throw (SPD) relay, a first directional amplifier, a second directional amplifier, a second SPD relay, a power divider, and multiple discrete SPD switches, all connected by radio frequency cables. The first control board also controls the opening and closing of the SPD relays; closed SPD relays are used to select antenna elements.

[0057] To ensure test reliability, the switching attenuation component consists of discrete component modules including third and fourth single-pole double-throw (SPD) switches and a 20dB coaxial attenuator, connected by RF cables. The input of the 20dB coaxial attenuator is connected to the normally open contact of the fourth SPD relay, and its output is connected to the normally open contact of the third SPD relay. The stationary terminal of the third SPD relay serves as the input / output port of the switching attenuation component. The stationary terminal of the fourth SPD relay is connected to the antenna probe, and the normally closed contact of the third SPD relay is connected to the normally closed contact of the fourth SPD relay. The 20dB coaxial attenuator is connected in the transmit test link. The switching attenuation component also includes a second control board. The third and fourth SPD switches are controlled and driven by the relevant control circuitry of the second control board to select the transmit and receive test links. The 20dB coaxial attenuator is connected in the transmit test link.

[0058] The first control board includes an FPGA chip, a digital driver chip, and a first connector. The output pins of the FPGA chip are connected to the digital driver chip; the output pins of the digital driver chip are connected to the first connector; and the output cables of the first connector are connected to the first and second single-pole double-throw relays and multiple single-pole single-throw relays.

[0059] The second control board includes a digital programmable chip, a second digital driver chip, and a second connector. The output pins of the digital programmable chip are connected to the second digital driver chip; the output pins of the second digital driver chip are connected to the second connector; and the output cables of the second connector are connected to the third and fourth single-pole double-throw relays.

[0060] Specifically, the FPGA chip on the first control board and the digital programmable chip on the second control board each generate digital control signals to control their respective relays. The digital control signal level is 3.3V. The digital control signal generated by the FPGA chip is connected to the first digital driver chip, and the digital control signal generated by the digital programmable chip is connected to the second digital driver chip. The first and second digital driver chips respectively convert the high-level 3.3V logic level generated by the FPGA chip and the digital programmable chip to 0V, and the low-level logic level generated by the FPGA chip to -5V. The FPGA chip controls the first and second single-pole double-throw relays to connect and transmit via the first digital driver chip. Alternatively, a receive test link is established, and the corresponding single-pole single-throw relay of the channel under test closes. The digital programmable chip controls the third and fourth single-pole double-throw relays to connect to the transmit or receive test link via the second digital driver chip. During transmit testing, the pulse excitation signal output by the vector network analyzer is amplified by the first directional amplifier and then divided by the power divider before being input to the SMA connector on the adapter board. The signal received by the SMA connector is then input to the T / R component under test via the SSMP connector. The transmit power signal of the T / R component under test's channel is received by the antenna probe, then attenuated by 20dB by the switch attenuation combination, and finally returns to the right port of the vector network analyzer. During receive testing of the T / R component under test, under the control of the first and second control boards, the first to fourth single-pole double-throw relays connect to the receive test link. The T / R component under test opens the receive link of the channel under test, and the single-pole single-throw relay of the channel under test closes. The robotic arm moves the antenna probe directly above the antenna element of the corresponding opened channel. Figure 2 The right port of the vector network analyzer outputs a transmit pulse excitation signal. The pulse excitation signal is received by the test link of the switch attenuation component and then excites the antenna probe. The channel of the T / R component under test receives the transmit signal of the antenna probe through the corresponding antenna array element. After passing through the T / R component under test receiving link, it is transmitted to the receiving link of the switch amplification component. After being amplified by the receiving test link of the switch amplification component, it returns to the left port of the vector network analyzer. The vector network analyzer completes the analysis of the returned signal.

[0061] The discrete component module connection relationship of the switching attenuation component is as follows: Figure 4 As shown.

[0062] The adapter fixture is equipped with an upward positioning pin; the T / R component under test is equipped with a positioning hole; the upward positioning pin of the adapter fixture is installed in the positioning hole of the T / R component under test; the T / R component under test is installed into the threaded hole of the adapter fixture by screws.

[0063] The schematic diagram of the upward and downward positioning pin structure of the adapter tool is shown below. Figure 5 As shown.

[0064] Specifically, the T / R component under test and the lower wall of the microwave anechoic chamber are equipped with positioning holes and screw locking structures. The bottom of the adapter fixture is fixed to the positioning hole inside the lower wall of the microwave anechoic chamber with a downward positioning pin; the top of the adapter fixture is fixed to the positioning hole of the T / R component under test. This achieves precise installation of the adapter fixture body and the T / R component under test.

[0065] The downward and upward positioning pins of the adapter fixture are used to achieve precise installation of the microwave dark box and the T / R component under test in the horizontal direction (XOZ plane).

[0066] The bottom of the microwave anechoic chamber has a height-adjustable bracket with threaded through holes. The adapter or passive antenna fixture is installed onto the height-adjustable bracket with screws.

[0067] Specifically, both the adapter fixture and the passive antenna fixture are equipped with threaded holes, allowing them to be mounted onto the corresponding holes on the liftable bracket using screws. The liftable bracket can adjust the height of the adapter fixture and the passive antenna fixture in the Z-axis direction. This ensures consistency in the Z-axis position of the T / R module under test and the antenna elements on the passive antenna fixture.

[0068] The two pairs of laser sights include an XOZ-plane laser sight and a YOZ-plane laser sight; both the XOZ-plane laser sight and the YOZ-plane laser sight include a laser emitter 4 and a laser receiver 3; the laser beam direction in the XOZ-plane laser sight is perpendicular to the XOZ-plane; the laser beam direction in the YOZ-plane laser sight is perpendicular to the YOZ-plane.

[0069] The calibration block includes an XOZ calibration block and a YOZ calibration block; the XOZ calibration block and the YOZ calibration block are two rectangular pieces placed perpendicular to each other; one side of the two rectangular pieces is joined to form an L-shape; the top of the XOZ calibration block and the YOZ calibration block are fixed to the gripper of the robotic arm by a mounting plate; the XOZ calibration block is placed parallel to the XOZ plane, and the YOZ calibration block is placed parallel to the YOZ plane; wherein, the mounting surface of the adapter tool is the XOY plane, the direction from left to right on the mounting surface of the adapter tool is the positive X-axis direction, the direction from bottom to top on the mounting surface of the adapter tool is the positive Y-axis direction, and the direction perpendicular to the mounting surface of the adapter tool is the positive Z-axis direction; the XOZ calibration block has two slits parallel to the X-axis and Z-axis respectively, and the YOZ calibration block has one slit parallel to the Z-axis.

[0070] Specifically, to ensure the repeatability of multiple tests, the robot arm's coordinates must be calibrated before the test begins. Coordinate calibration is achieved using a calibration block on the robot arm's gripper and a laser sight on the adapter fixture. A schematic diagram of the calibration block structure is shown below. Figure 6-8 As shown, the laser sight is installed in the following position. Figure 1 As shown. The calibration block is a two-sided structure with two mutually perpendicular narrow slits on the front and left sides, allowing the laser beam to pass through completely. The adapter fixture has two laser sights, each consisting of a laser emitter and a laser receiver. The two laser sights are positioned at a 45° angle, and the laser beams emitted by the two sights are perpendicular to each other. The laser sights are positioned so that the laser beam emitted by the lower right laser sight is perpendicular to the XOZ plane. The robotic arm moves the calibration block so that the XOZ plane calibration block is positioned between the lower right laser emitter 1 and laser receiver 2. Fine-tuning the position of the XOZ plane calibration block ensures that the laser beam passes precisely through the XOZ plane. The zero position of the Z-axis is determined by the horizontal slit on the OZ surface calibration block. The zero position of the X-axis is determined by finely adjusting the position of the XOZ surface calibration block so that the laser beam can pass through the vertical slit on the XOZ surface calibration block. The robotic arm moves the calibration block so that the YOZ surface calibration block is located between the laser emitter 4 and the laser receiver 3 in the YOZ surface laser sight. The laser emitted by the YOZ surface laser emitter 4 is perpendicular to the YOZ surface. The zero position of the Y-axis is determined by finely adjusting the position of the YOZ surface calibration block so that the laser beam can pass through the vertical slit on the YOZ surface calibration block. The robotic arm transmits the zero position coordinates of the X, Y, and Z axes to the integrated control computer to realize the calibration of the origin of the rectangular coordinate system.

[0071] The inner surface of the microwave anechoic chamber is lined with soft polyurethane pyramidal microwave absorbing material.

[0072] Specifically, in one embodiment of the present invention, an oxygen index of 28% or 32% and a power radiation density tolerance of ≤1000W / m² are used. 2 Wave-absorbing materials.

[0073] The robotic arm uses the Z-ARM 1632 model.

[0074] Specifically, the robotic arm is equipped with a servo motor and a precision optical encoder, which can maintain a repeatability accuracy of ±0.02mm.

[0075] Compared with existing technologies, this embodiment provides an active phased array transceiver component testing device based on antenna fixtures. By setting a height-adjustable bracket in a microwave anechoic chamber and installing an adapter fixture on the height-adjustable bracket, the device achieves interface versatility, making it suitable for testing transceiver components with integrated antennas for various signals. The active phased array transceiver component testing device based on antenna fixtures provided in this embodiment includes two pairs of laser sights: an XOZ-plane laser sight and a YOZ-plane laser sight. Both the XOZ-plane and YOZ-plane laser sights include a laser transmitter and a laser receiver. The laser beam direction in the XOZ-plane laser sight is perpendicular to the XOZ-plane; the laser beam direction in the YOZ-plane laser sight is perpendicular to the YOZ-plane. The calibration blocks include XOZ and YOZ calibration blocks; the tops of the XOZ and YOZ calibration blocks are fixed to the gripper of the robotic arm by a mounting plate; the XOZ calibration blocks are placed parallel to the XOZ plane, and the YOZ calibration blocks are placed parallel to the YOZ plane; the XOZ calibration blocks have two slits parallel to the X-axis and Z-axis respectively, and the YOZ calibration blocks have one slit parallel to the Z-axis. The cooperation between the laser sight and the calibration blocks ensures the accuracy and repeatability of multiple tests. This embodiment provides a test device for an active phased array transceiver component based on an antenna fixture, including a passive antenna fixture; the passive antenna fixture includes an antenna array identical to the T / R component under test and an SMA connector and adapter cable identical to those on the adapter fixture; the adapter cable includes an adapter cable from the SMA connector to the switching amplifier component; the passive antenna fixture is used in the test link to replace the adapter fixture and the T / R component under test to obtain data results on the influence of the antenna array elements on the open feed test. An accurate and reliable test device for transceiver components based on an open-feed system is provided. The signal processing component of this active phased array transceiver component test device based on an antenna fixture includes a switching amplification component comprising discrete component modules and a first control board; the discrete component modules are connected by RF cables. The first control board includes an FPGA chip, a digital driver chip, and a first connector. The output pins of the FPGA chip are connected to the digital driver chip; the output pins of the digital driver chip are connected to the first connector; the output cables of the first connector are connected to first and second single-pole double-throw relays and multiple single-pole single-throw relays. The combination of discrete component modules and the first control board ensures the reliability of the test device. The adapter fixture of this active phased array transceiver component test device based on an antenna fixture is equipped with positioning pins on both the top and bottom, enabling precise installation with the microwave anechoic chamber and the transceiver component under test in the horizontal direction (XOZ plane); the passive antenna fixture is also equipped with positioning pins on the bottom, enabling precise installation with the microwave anechoic chamber in the horizontal direction (XOZ plane). The bottom of the microwave anechoic chamber is equipped with a liftable support, which ensures the consistency of the position of the antenna array elements on the passive antenna fixture in the Z-axis direction.The passive antenna fixture is used to calibrate test results affected by the antenna, realizing a precise test device for active phased array transceiver components.

[0076] Those skilled in the art will understand that the programs / software involved in the above embodiments are common methods in the prior art, and this utility model does not involve any software improvements. This utility model only requires connecting various devices with corresponding functions through the connection relationships given in the embodiments of this utility model, without involving any program or software improvements. As for the connection methods between the various hardware devices with corresponding functions, they can all be implemented by those skilled in the art using existing technology, and will not be described in detail here.

[0077] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. An antenna tool based active phased array transceiver assembly test apparatus, characterized by, The testing device comprises a microwave dark box, an adapter tool, a passive antenna tool, two pairs of laser sights, a mechanical arm and a signal processing assembly; The bottom of the microwave dark box is provided with a liftable support and a positioning pin hole; The adapter tool or the passive antenna tool is installed on the liftable support; The bottom of the adapter tool or the passive antenna tool is provided with a positioning pin at the same position, which is aligned with the positioning pin hole at the bottom of the microwave dark box; the two pairs of laser sights are installed at a corner of the adapter tool or the passive antenna tool and are placed at an angle of 45°; the body of the mechanical arm is located at one side inside the microwave dark box; the signal processing assembly is located outside the microwave dark box; the antenna probe and the calibration block are provided on the clamping jaw of the mechanical arm; the T / R assembly to be tested is electrically connected with the signal processing assembly through the adapter tool, and the passive antenna tool is electrically connected with the signal processing assembly.

2. The transceiver assembly test apparatus of claim 1, wherein, The signal processing assembly comprises a switch attenuation assembly, a switch amplification assembly, a vector network analyzer and a control computer; the control computer is connected with the vector network analyzer, the mechanical arm, the switch amplification assembly and the switch attenuation assembly through an Ethernet interface; one end of the switch amplification assembly is connected with the adapter tool or the passive antenna tool, and the other end is connected with the signal input / output port of the vector network analyzer; One end of the switch attenuation assembly is connected with the antenna probe, and the other end is connected with the signal input port of the vector network analyzer.

3. The transceiver assembly test apparatus of claim 2, wherein, The switch amplification assembly comprises a discrete component module and a first control board; the discrete component module comprises a first single-pole double-throw relay, a first direction amplifier, a second direction amplifier, a second single-pole double-throw relay, a multi-way power divider and a plurality of single-pole single-throw relays; The input end of the first direction amplifier is connected with the normally closed contact of the first single-pole double-throw relay, and the output end is connected with the normally closed contact of the second single-pole double-throw relay; the input end of the second direction amplifier is connected with the normally open contact of the second single-pole double-throw relay, and the output end is connected with the normally open contact of the first single-pole double-throw relay; the fixed end of the first single-pole double-throw relay serves as the input / output port of the switch amplification assembly; the fixed end of the second single-pole double-throw switch is connected with one end of the multi-way power divider, and the plurality of ports of the other end of the multi-way power divider are respectively connected with the SMA connectors of the adapter tool through one single-pole single-throw relay; The first control board is electrically connected with the first single-pole double-throw relay, the first single-pole double-throw relay and each single-pole single-throw relay.

4. The transceiver assembly testing device according to claim 3, wherein The first control board comprises an FPGA chip, a digital drive chip and a first connector; the output pin of the FPGA chip is connected with the digital drive chip; the output pin of the digital drive chip is connected with the first connector; and the output cable of the first connector is connected with the first and second single-pole double-throw relays and the plurality of single-pole single-throw relays.

5. The transceiver assembly test apparatus of claim 1, wherein, The adapter tool is provided with an upward positioning pin; the T / R assembly to be tested is provided with a positioning hole; the upward positioning pin of the adapter tool is installed in the positioning hole of the T / R assembly to be tested; and the T / R assembly to be tested is installed into the threaded hole of the adapter tool through a screw.

6. The transceiver assembly test apparatus of claim 1, wherein, The liftable support at the bottom of the microwave dark box is provided with a threaded through hole; and the adapter tool or the passive antenna tool is installed onto the liftable support through a screw.

7. The transceiver assembly test apparatus of claim 1, wherein, The two pairs of laser sights include an XOZ plane laser sight and a YOZ plane laser sight; the XOZ plane laser sight and the YOZ plane laser sight each include a laser emitter and a laser receiver; the direction of a laser beam in the XOZ plane laser sight is perpendicular to the XOZ plane; and the direction of a laser beam in the YOZ plane laser sight is perpendicular to the YOZ plane.

8. The transceiver assembly test apparatus of claim 7, wherein, The calibration block includes an XOZ plane calibration block and a YOZ plane calibration block; the XOZ plane calibration block and the YOZ plane calibration block are two rectangular pieces placed perpendicularly to each other; one side of the two rectangular pieces is butted to form an L shape; the top of the XOZ plane calibration block and the YOZ plane calibration block is fixed on the mechanical arm gripper through a mounting piece; the XOZ plane calibration block is placed parallel to the XOZ plane, and the YOZ plane calibration block is placed parallel to the YOZ plane; wherein, the adapter tool mounting surface is the XOY plane, the direction of the adapter tool mounting surface from left to right is the positive direction of the X axis, the adapter tool mounting surface from bottom to top is the positive direction of the Y axis, and the upward direction perpendicular to the adapter tool mounting surface is the positive direction of the Z axis; the XOZ plane calibration block is provided with two slits parallel to the X axis and the Z axis, and the YOZ plane calibration block is provided with a slit parallel to the Z axis.

9. The transceiver assembly test apparatus of claim 1, wherein, The inner surface of the microwave dark box is arranged with soft polyurethane pyramidal wave-absorbing material.

10. The transceiver assembly test apparatus of claim 1, wherein, The mechanical arm is of Z-ARM 1632 model.

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