Frequency band expansion device suitable for multi-probe antenna test system

Abstract

The utility model discloses a frequency band expansion device suitable for a multi-probe antenna test system, which comprises a probe mounting bracket, a frequency band expansion probe and a wave-absorbing material baffle, and is characterized in that at least one probe mounting bracket made of non-metal materials can be locked and positioned on a multi-probe ring of the multi-probe antenna test system; the plurality of probe mounting brackets are arranged at intervals along the circumferential direction of a multi-probe ring of the multi-probe antenna test system, the wave-absorbing material baffle and the at least one frequency band expansion probe are fixedly mounted on the probe mounting brackets, and the frequency band expansion probe is located at the right inner side of the multi-probe ring of the multi-probe antenna test system; the wave-absorbing material baffle plate is arranged between the inner side surface of the multi-probe ring and the frequency band expansion probe, and can cover and shield one side of the frequency band expansion probe back to the axis of the multi-probe ring, so that the purpose of frequency band expansion in the test process can be realized under the condition that the original test environment is not changed, the flexibility is high, and the reliability is strong.

Description

Technical Field

[0001] This utility model relates to an antenna testing device, and more particularly to a frequency band extension device suitable for a multi-probe antenna testing system. Background Technology

[0002] While multi-probe antenna testing systems offer high testing speeds, their frequency band expansion capabilities are limited. Adding frequency extension devices to existing equipment for testing lower and higher frequency bands is a market demand arising from the development of communication technology. Utility Model Content

[0003] To overcome the above-mentioned defects, this utility model provides a frequency band extension device suitable for multi-probe antenna testing systems. This frequency band extension device can achieve the purpose of frequency band extension in the testing process without changing the original testing environment, and has high flexibility and high reliability.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: a frequency band extension device suitable for a multi-probe antenna test system, comprising a probe mounting bracket, a frequency band extension probe, and an absorbing material baffle. At least one probe mounting bracket made of non-metallic material can be fixedly positioned on the multi-probe ring of the multi-probe antenna test system. Multiple probe mounting brackets are arranged at intervals along the circumferential direction of the multi-probe ring of the multi-probe antenna test system. The absorbing material baffle and at least one frequency band extension probe are fixedly mounted on the probe mounting bracket, and the frequency band extension probe is located on the inner side of the multi-probe ring of the multi-probe antenna test system. The absorbing material baffle is located between the inner side of the multi-probe ring and the frequency band extension probe, and the absorbing material baffle can cover and shield the side of the frequency band extension probe facing away from the axis of the multi-probe ring.

[0005] As a further improvement of this utility model, a slide rail is also provided, which is fixedly sleeved on the outer side of the multi-probe ring of the multi-probe antenna test system, and the probe mounting bracket is installed on the slide rail.

[0006] As a further improvement of this utility model, the probe mounting bracket is a square ring structure. The probe mounting bracket can be sleeved on the multi-probe ring of the multi-probe antenna test system. The probe mounting bracket forms a positioning end and an installation end at both ends of the radial direction of the multi-probe ring. The positioning end is connected to the slide rail, and the installation end is used to install the absorbing material baffle and the frequency band extension probe.

[0007] As a further improvement of this utility model, the probe mounting bracket can be slidably mounted on the slide rail along the circumferential direction of the multi-probe ring, and is also provided with at least one probe driving device and a control system. The probe driving device drives each probe mounting bracket to slide forward and backward in a corresponding manner, thereby changing the position of the frequency band extension probe. The control system controls the start and stop and forward and reverse operation of the probe driving device.

[0008] As a further improvement of this utility model, the slide rail is also provided with a drag chain connected to the probe driving device, and the cable of the probe driving device is located inside the drag chain.

[0009] As a further improvement of this utility model, at least one slider is detachably provided on the slide rail, and at least one probe driving device drives each slider to slide along the extension direction of the slide rail. The probe mounting bracket is detachably and fixedly installed on the slider.

[0010] As a further improvement of this utility model, the lengths of the probe mounting brackets along the radial direction of the multi-probe ring are not equal, and the distance from the frequency band extension probe to the center of the multi-probe ring is changed by selecting probe mounting brackets of different lengths.

[0011] As a further improvement of this utility model, the probe mounting bracket includes a fixed base, an adjusting base, and an adjusting positioning component. The adjusting base is slidably mounted on the fixed base along the radial direction of the multi-probe ring. The adjusting positioning component can stop and position the adjusting base at any position on the fixed base. The fixed base is used to stop and position the probe mounting bracket and the multi-probe ring. The adjusting base is used to install the absorbing material baffle and the frequency band extension probe. The distance from the frequency band extension probe to the center of the multi-probe ring is changed by adjusting the position of the adjusting base.

[0012] As a further improvement of this utility model, the probe mounting bracket is provided with a probe interface, and the frequency band extension probe can be replaced with different specifications and types of frequency band extension probes within the probe structure through the detachable and pluggable probe interface.

[0013] As a further improvement of this utility model, an extended shielding device made of absorbing material is installed at the bottom of the multi-probe ring, and the probe mounting bracket can be shielded and hidden by the extended shielding device when it slides to the bottom of the multi-probe ring.

[0014] The beneficial effects of this invention are as follows: When the test frequency band is outside the original test frequency band of the multi-probe antenna test system, by installing this invention, the frequency band extension probe is positioned at a designated location inside the multi-probe ring of the multi-probe antenna test system, thereby achieving the purpose of test frequency band extension. The probe mounting bracket of this invention adopts a square ring structure and is installed in a wrap-around manner on the outside of the multi-probe ring of the multi-probe antenna test system, thus allowing the front end of the probe mounting bracket to freely and easily install any required frequency band extension probe. At the same time, this invention is simple and quick to install, low in cost, and does not affect test accuracy, effectively extending the original test frequency band. There are devices for changing frequency band testing, and by adding different numbers of frequency band extension probes, single-probe testing extension or testing extension with any number of multiple probes can be achieved. When the test frequency band is within the original test frequency band of the multi-probe antenna testing system, the frequency band extension probe of this utility model can be omitted. That is, the probe mounting bracket can be slid along the slide rail to the bottom of the multi-probe ring of the multi-probe antenna testing system. The probe mounting bracket of this utility model without the frequency band extension probe is hidden by a probe shielding and accommodating structure made of absorbing material, so as to avoid interference between the probe mounting bracket of this utility model and the multi-probe antenna testing system. Attached Figure Description

[0015] Figure 1 This is a front view illustrating the structural principle of this utility model;

[0016] Figure 2 This is a right view of the structural principle of this utility model;

[0017] Figure 3 This is a top view of the structural principle of this utility model;

[0018] Figure 4 This is a three-dimensional view of the test state of this utility model;

[0019] Figure 5 for Figure 4 Enlarged view of section A in the middle;

[0020] Figure 6 This is the main view of the test state of this utility model;

[0021] Figure 7 for Figure 6 Enlarged view of section B in the middle;

[0022] Figure 8 This is a top view of the test state of this utility model;

[0023] Figure 9 This is a right view of the test state of this utility model. Detailed Implementation

[0024] Example: A frequency band extension device suitable for a multi-probe antenna test system includes a probe mounting bracket 1, a frequency band extension probe 2, and an absorbing material baffle 3. At least one probe mounting bracket 1 made of non-metallic material can be fixedly positioned on the multi-probe ring 4 of the multi-probe antenna test system. Multiple probe mounting brackets 1 are arranged at intervals along the circumference of the multi-probe ring 4 of the multi-probe antenna test system. The absorbing material baffle 3 and at least one frequency band extension probe 2 are fixedly mounted on the probe mounting bracket 1, and the frequency band extension probe 2 is located on the inner side of the multi-probe ring 4 of the multi-probe antenna test system. The absorbing material baffle 3 is located between the inner side of the multi-probe ring 4 and the frequency band extension probe 2, and the absorbing material baffle 3 can cover and shield the side of the frequency band extension probe 2 facing away from the axis of the multi-probe ring 4.

[0025] When the test frequency band is outside the original test frequency band of the multi-probe system, the frequency band of the test system can be extended by installing the frequency band extension device. Different numbers of probe mounting brackets 1 can be added to the multi-probe antenna test system to meet single-probe test conditions or multi-probe test conditions. One or more frequency band extension probes 2 can also be selectively arranged on each probe mounting bracket 1 at the same time to meet the test conditions of synchronous execution of reception and transmission of different frequency band extension probes 2, as well as periodic execution of reception and transmission of a single frequency band extension probe 2, thereby increasing the degree of freedom in the test process.

[0026] The wave-absorbing material baffle 3 covering the front of the probe mounting bracket 1 can receive electromagnetic waves directed towards the rear of the frequency band extension probe 2, effectively optimizing the impact of signal scattering caused by the probe mounting bracket 1.

[0027] A slide rail 5 is also provided, which is fixedly sleeved on the outer circumference of the multi-probe ring 4 of the multi-probe antenna test system. The probe mounting bracket 1 is installed on the slide rail 5. The slide rail 5 is laid out along the outer ring direction of the multi-probe ring 4 of the multi-probe test system, so it is located on the rear side of the multi-probe ring 4. This design can effectively utilize the empty space outside the multi-probe ring 4, greatly optimizing the space utilization of the device. At the same time, based on the supporting force of the upper part of the frame of the multi-probe ring 4, the slide rail 5 is spliced ​​from multiple rail segments. The slide rail 5 can be a circular ring structure concentric with the multi-probe ring 4, or a square frame structure covering the outer periphery of the multi-probe ring 4.

[0028] The probe mounting bracket 1 is a square ring structure. It can be fitted onto the multi-probe ring 4 of the multi-probe antenna test system. The probe mounting bracket 1 has a positioning end and a mounting end at its radial ends along the multi-probe ring 4. The positioning end is connected to the slide rail 5, and the mounting end is used to install the absorbing material baffle 3 and the frequency band extension probe 2. The probe mounting bracket 1 consists of four parallel sections forming a square ring structure that holds the circular frame of the multi-probe test system. The rear section of the square ring structure is fixed to a slide rail 5, allowing it to slide in front of the multi-probe ring 4 using the slide rail 5, based on the control system. This ring-shaped design significantly reduces the difficulty and improves the stability of the device installation.

[0029] The probe mounting bracket 1 is slidably mounted on the slide rail 5 along the circumferential direction of the multi-probe ring 4. It is also equipped with at least one probe driving device and a control system. The probe driving device drives each probe mounting bracket 1 to slide forward and backward, thereby changing the position of the frequency band extension probe 2. The control system controls the start and stop of the probe driving device and its forward and reverse operation. The probe mounting bracket 1 is equipped with a probe driving device, which is managed by a control system. Each probe mounting bracket 1 slides on its corresponding track. The sliding design avoids interference between probes and improves the testing flexibility and accuracy of the system. The probe driving device can be a motor fixedly connected to the probe mounting bracket 1. A rack is installed on the slide rail 5, and a gear meshing with the rack is installed on the motor shaft. The motor drives the gear to rotate, causing the gear to roll along the rack, thereby driving the probe mounting bracket 1 to move along the slide rail 5. Alternatively, a friction roller can be installed on the motor shaft. The motor drives the friction roller to rotate, and the friction roller rolls along the slide rail 5, driving the probe mounting bracket 1 to move. Or, the motor can cooperate with a lead screw and nut mechanism to drive the probe mounting bracket 1 to move. This is an equivalent replacement structure that is easy for those skilled in the art to conceive of when they see this application, and it falls within the protection scope of this application.

[0030] The slide rail 5 is also equipped with a cable chain connected to the probe drive device. The cable of the probe drive device is located inside the cable chain to prevent cable interference with the test.

[0031] At least one slider 6 is detachably provided on the slide rail 5. At least one probe driving device drives each slider 6 to slide along the extension direction of the slide rail 5. The probe mounting bracket 1 is detachably fixedly installed on the slider 6.

[0032] The lengths of the probe mounting brackets 1 along the radial direction of the multi-probe ring 4 are not equal. By selecting probe mounting brackets 1 with different lengths, the distance from the frequency band extension probe 2 to the center of the multi-probe ring 4 can be changed.

[0033] The probe mounting bracket 1 includes a fixed base, an adjusting base, and an adjusting positioning component. The adjusting base is slidably mounted on the fixed base along the radial direction of the multi-probe ring 4. The adjusting positioning component can stop and position the adjusting base at any position. The fixed base is used to stop and position the probe mounting bracket 1 and the multi-probe ring 4. The adjusting base is used to install the absorbing material baffle 3 and the frequency band extension probe 2. The distance from the frequency band extension probe 2 to the center of the multi-probe ring 4 is changed by adjusting the position of the adjusting base.

[0034] The probe mounting bracket 1 is equipped with a probe interface. The frequency band extension probe 2 can be replaced with different specifications and types of frequency band extension probes within the probe structure through the detachable and pluggable probe interface. The frequency band extension probe 2 adopts a replaceable mounting structure, which allows for the addition and fixation of various models of frequency band extension probes 2 according to different frequency band requirements, thereby achieving the purpose of testing frequency band extension.

[0035] The bottom of the multi-probe ring 4 is equipped with an extended shielding device 7 made of absorbing material. When the probe mounting bracket 1 slides to the bottom of the multi-probe ring 4, it can be shielded and hidden by the extended shielding device 7. When the probe mounting bracket 1 without the frequency band extension probe 2 is slid to the bottom of the multi-probe ring 4, it is covered and shielded by the absorbing material to achieve the effect of hiding, thereby avoiding the frequency band extension device from shielding the initial probe of the test system and avoiding interference with the multi-probe test system.

[0036] During testing, it is determined whether the original test frequency band of the multi-probe antenna testing system meets the antenna's test frequency band. If the frequency band range is met, the control system slides the probe mounting bracket 1 under the probe shielding and receiving structure made of absorbing material laid at the bottom of the multi-probe ring 4 of the multi-probe antenna testing system, and the antenna is tested normally using the original probe of the multi-probe antenna testing system. If the initial test frequency band range does not meet the requirements, the control system moves the probe mounting bracket 1 out from the bottom of the probe shielding and receiving structure made of absorbing material, and fixes the required frequency band extension probe 2 to the front interface of the probe mounting bracket 1. After the frequency band extension probe 2 is fixedly installed, the control system again moves the probe mounting bracket 1 along the slide rail 5 to the designated position of the multi-probe ring 4. When only azimuth angle testing is performed, the probe driver is turned off, and the turntable 8 under the multi-probe ring 4 of the multi-probe antenna test system rotates. When only elevation angle testing is performed, the turntable of the multi-probe ring 4 of the multi-probe antenna test system remains stationary, and based on the test requirements, the probe mounting device is driven by the probe driver to move, thus slowly moving the band extension probe 2 along the slide rail 5. When omnidirectional testing is performed, the turntable under the multi-probe ring 4 of the multi-probe antenna test system and the probe driver of the band extension device are simultaneously controlled to operate. In addition, when adding the band extension probe 2, one or more band extension probes 2 can be selectively added to each probe mounting bracket 1. When one band extension probe 2 is added, the transmit and receive tests of the same band extension probe 2 can be performed periodically. When multiple band extension probes 2 are added, the transmission and reception of signals at the same angle can be achieved simultaneously based on different band extension probes 2, thus speeding up the test.

[0037] When multi-probe testing is required, the corresponding frequency band extension probe 2 can be installed based on the previously described installation process, and the probe drive device can be used to move each probe mounting bracket 1 to the corresponding angle. During this process, the probe drive devices of each probe mounting bracket 1 are independent of each other and are uniformly managed by the control system. Therefore, when performing multi-probe testing under different requirements and conditions, any number of probe mounting brackets 1 can be controlled to slide out from the bottom of the multi-probe ring 4 based on the driver program. After installing the corresponding frequency band extension probe 2, the control system is used again to control the angular interval between each probe mounting bracket 1 and sequentially move them to different positions. At the start of the test, based on the multi-probe antenna testing process, only the turntable needs to be selectively controlled to rotate to complete the antenna's elevation angle test or full-angle test process.

[0038] When performing multi-probe extended testing, the multiple probe mounting brackets 1 can be regarded as a test array. This array is always located on the same test plane, and the probe mounting brackets 1 do not contact each other.

[0039] When the probe mounting bracket 1 slides, it can only move in a queue pattern. That is, when adjusting the number of devices, only the probe mounting brackets 1 located at both ends of the slide rail 5 can be moved. The distance from each frequency band extended probe 2 to the center of the multi-probe ring 4 is equal. Therefore, when replacing the frequency band extended probe 2, the front end of the probe mounting bracket 1 can be replaced and adjusted based on the detachable installation method, thereby controlling the transmission and reception height of the frequency band extended probe 2 to meet the requirement that the distance from each probe to the center of the ring is equal. It can also be more suitable for testing scenarios of different antennas.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A frequency band extension device suitable for multi-probe antenna testing systems, characterized in that: The probe mounting bracket (1), the frequency band extension probe (2), and the absorbing material baffle (3) are provided. At least one probe mounting bracket made of non-metallic material can be fixedly positioned on the multi-probe ring (4) of the multi-probe antenna test system. Multiple probe mounting brackets are arranged at intervals along the circumferential direction of the multi-probe ring of the multi-probe antenna test system. The absorbing material baffle and at least one frequency band extension probe are fixedly installed on the probe mounting bracket. The frequency band extension probe is located on the inner side of the multi-probe ring of the multi-probe antenna test system. The absorbing material baffle is located between the inner side of the multi-probe ring and the frequency band extension probe. The absorbing material baffle can cover and shield the side of the frequency band extension probe facing away from the axis of the multi-probe ring.

2. The frequency band extension device for a multi-probe antenna testing system according to claim 1, characterized in that: It is also equipped with a slide rail (5), which is fixedly sleeved on the outside of the multi-probe ring of the multi-probe antenna test system, and the probe mounting bracket is installed on the slide rail.

3. The frequency band extension device for a multi-probe antenna testing system according to claim 2, characterized in that: The probe mounting bracket is a square ring structure. The probe mounting bracket can be fitted onto the multi-probe ring of the multi-probe antenna test system. The probe mounting bracket forms a positioning end and an installation end at both ends of the radial direction of the multi-probe ring. The positioning end is connected to the slide rail, and the installation end is used to install the absorbing material baffle and the frequency band extension probe.

4. The frequency band extension device for a multi-probe antenna testing system according to claim 2, characterized in that: The probe mounting bracket can be slidably mounted on the slide rail along the circumferential direction of the multi-probe ring. It is also equipped with at least one probe driving device and a control system. The probe driving device drives each probe mounting bracket to slide forward and backward in a corresponding manner, thereby changing the position of the frequency band extension probe. The control system controls the start and stop of the probe driving device and its forward and reverse operation.

5. The frequency band extension device for a multi-probe antenna testing system according to claim 4, characterized in that: The slide rail is also equipped with a drag chain that connects to the probe drive device, and the cable of the probe drive device is located inside the drag chain.

6. The frequency band extension device for a multi-probe antenna test system according to claim 4, characterized in that: At least one slider (6) is detachably provided on the slide rail, and at least one probe driving device drives each slider to slide along the extension direction of the slide rail. The probe mounting bracket is detachably fixedly installed on the slider.

7. The frequency band extension device for a multi-probe antenna test system according to claim 1 or 6, characterized in that: The lengths of the probe mounting brackets along the radial direction of the multi-probe ring are not equal. By selecting probe mounting brackets of different lengths, the distance from the frequency band extension probe to the center of the multi-probe ring can be changed.

8. The frequency band extension device for a multi-probe antenna testing system according to claim 1, characterized in that: The probe mounting bracket includes a fixed base, an adjusting base, and an adjusting positioning component. The adjusting base is slidably mounted on the fixed base along the radial direction of the multi-probe ring. The adjusting positioning component can stop and position the adjusting base at any position. The fixed base is used to stop and position the probe mounting bracket and the multi-probe ring. The adjusting base is used to install the absorbing material baffle and the frequency band extension probe. The distance from the frequency band extension probe to the center of the multi-probe ring is changed by adjusting the position of the adjusting base.

9. The frequency band extension device for a multi-probe antenna testing system according to claim 1, characterized in that: The probe mounting bracket is equipped with a probe interface, and the frequency band extension probe can be replaced with different specifications and types of frequency band extension probes within the probe structure through the detachable and pluggable probe interface.

10. The frequency band extension device for a multi-probe antenna test system according to claim 4, characterized in that: The bottom of the multi-probe ring is equipped with an extended shielding device (7) made of microwave absorbing material. When the probe mounting bracket slides to the bottom of the multi-probe ring, it can be shielded and hidden by the extended shielding device.

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