CPE antenna testing device

Abstract

The utility model provides a CPE antenna testing device. The device comprises a test bench; the microwave anechoic chamber is arranged on the test board, and the microwave anechoic chamber is in a circular ring shape; the testing tools are arranged on the surface of the testing table and located in the annular interior of the microwave anechoic chamber, the number of the testing tools is three, the testing tools are arranged around the annular circle center of the microwave anechoic chamber in a 120-degree array mode, antenna mounting positions are arranged on the testing tools, and the antenna mounting positions are arranged on the surface of the testing table and located in the annular interior of the microwave anechoic chamber. And the antenna mounting positions on the test tools are arranged oppositely and directly face the upper wave absorbing surface of the anechoic chamber. According to the CPE antenna testing device provided by the invention, the structural size of the microwave anechoic chamber is relatively small, and meanwhile, the mutual influence condition of each antenna in a real use scene can be tested.

Description

Technical Field

[0001] The present application belongs to the field of antenna technology, and more specifically, relates to a CPE antenna testing device. Background Art

[0002] During CPE antenna testing (such as S-parameter testing), each CPE antenna must be tested separately in a traditional microwave anechoic chamber. This results in, on the one hand, a large anechoic chamber footprint, hindering the miniaturization of the test site; on the other hand, testing only a single CPE antenna at a time results in long test times and low efficiency; and, furthermore, testing a single CPE antenna at a time cannot simulate the interaction between multiple CPE antennas, making it difficult for test parameters to cover real-world scenarios. Utility Model Content

[0003] The purpose of the embodiments of the present application is to provide a CPE antenna testing device to solve the technical problems in the prior art that the microwave darkroom is large and the CPE antenna test parameters are difficult to cover the usage scenarios.

[0004] To achieve the above objectives, the technical solution adopted in the embodiment of the present application is to provide a CPE antenna testing device, which includes:

[0005] test bench;

[0006] A microwave darkroom is provided on the test bench, and the microwave darkroom is in a circular shape;

[0007] The test fixture is arranged on the surface of the test table and located inside the annular structure of the microwave darkroom. There are three test fixtures, each of which is arranged in a 120° array around the annular center of the microwave darkroom. An antenna mounting position is provided on the test fixture, and the antenna mounting positions on each test fixture are arranged back to back and face the upper absorbing surface of the microwave darkroom.

[0008] Optionally, the annular height of the microwave darkroom is greater than the vertical beam height of the antenna.

[0009] Optionally, the vertical distance between the absorbing surface and the antenna installation position facing it is 5 times the wavelength corresponding to the lowest operating frequency band of the antenna.

[0010] Optionally, the test fixture is provided with a slot for mounting the antenna, the slot being the antenna mounting position, and four test cables are also fixedly connected to the test fixture, and the test cables are connected to a network analyzer.

[0011] Optionally, the testing tool is made of acrylic material.

[0012] Optionally, the test tooling includes a first frame, a cover plate and a second frame, the first frame is provided with an opening on a side away from the annular center of the microwave darkroom, the second frame is covered on the opening to enclose the slot, the cover plate is provided on the top of the first frame, and a through hole is provided on the cover plate for the test cable to pass through.

[0013] Optionally, a plurality of second openings are provided at the bottom of the opening along the length direction of the opening, and the second openings are spaced apart from each other.

[0014] Optionally, the first frame, the second frame and the cover are fixedly connected by bolts.

[0015] The CPE antenna testing device provided in the embodiment of the present application has at least the following beneficial effects:

[0016] By setting the microwave anechoic chamber into a circular shape and distributing three test fixtures in an array along the center of the circular interior of the microwave anechoic chamber, the three test fixtures can simultaneously fix three CPE antennas. At the same time, each CPE antenna is set directly opposite the absorbing surface of the microwave anechoic chamber. In this way, the S parameters of the three CPE antennas can be tested simultaneously, and the mutual influence of the antennas in real usage scenarios can also be simulated. In addition, setting the microwave anechoic chamber into a circular shape can meet the far-field conditions of antenna testing and save space as much as possible while meeting the test space. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0018] Figure 1 A three-dimensional diagram of a CPE antenna testing device in some embodiments of the present application;

[0019] Figure 2 A top view of a CPE antenna testing device in some embodiments of the present application;

[0020] Figure 3 A three-dimensional diagram of a test tool in some embodiments of the present application;

[0021] Figure 4 A perspective view of the first frame in some embodiments of the present application;

[0022] Figure 5 This is a three-dimensional diagram of the second frame in some embodiments of the present application. DETAILED DESCRIPTION

[0023] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clear, this application is further described in detail below with reference to the accompanying drawings and embodiments.

[0024] It should be understood that the specific embodiments described herein are only used to explain the present application and are not intended to limit the present application.

[0025] It should be noted that when an element is referred to as being “fixed to” or “disposed on” another element, it can be directly on the other element or indirectly on the other element.

[0026] When an element is referred to as being “connected to” another element, it can be directly connected to the another element or indirectly connected to the another element.

[0027] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or to implicitly indicate the quantity of the technical features indicated. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features.

[0029] In the description of the present application, “plurality” means two or more, unless otherwise clearly defined.

[0030] Please also refer to Figures 1 to 3 , the CPE antenna testing device provided in the embodiment of the present application is now described.

[0031] refer to Figure 1 and Figure 2 The CPE antenna testing device of the present application includes a test bench 100, a microwave darkroom 200 and a test tool 300. The microwave darkroom 200 and the test tool 300 are both arranged on the test bench 100, and the test tool 300 is used to place the CPE antenna to be tested.

[0032] Specifically, the microwave anechoic chamber 200 is annular in shape, with a conical absorbing material disposed on its inner circumference. A test fixture 300 is disposed on the upper surface of the test bench 100 and within the annular interior of the microwave anechoic chamber 200. In this embodiment, three test fixtures 300 are provided, each positioned around the annular center of the microwave anechoic chamber 200. Each test fixture 300 is positioned on the same circular trajectory, the center of which is also the aforementioned annular center. Furthermore, the central angle formed by the line connecting two adjacent test fixtures 300 and the annular center is 120°.

[0033] Furthermore, the antenna mounting position on each test fixture 300 is located on the opposite side of the test fixture 300, so that the CPE antenna on each test fixture 300 can face the absorbing surface of the microwave anechoic chamber 200. Furthermore, a through hole 331 is provided on the test fixture 300 for the test cable 400 to pass through. When the CPE antenna is placed on the test fixture 300, the CPE is connected to the test cable 400, which is then connected to the antenna tester to test the S parameters of the CPE antenna.

[0034] By configuring the CPE antenna test apparatus in this manner, with the microwave anechoic chamber 200 arranged in a ring and the test fixtures 300 arranged in a 120-degree array, three CPE antennas can be tested simultaneously. This allows for far-field testing while simulating the actual antenna usage environment. This means that the interaction between the three antennas can be tested when in use simultaneously. This effectively reduces the footprint of the microwave anechoic chamber 200 and maximizes the coverage of test conditions for everyday use.

[0035] refer to Figure 1 In some embodiments, the annular height of the microwave anechoic chamber 200 is greater than the vertical beam height of the CPE antenna. This allows the height of the microwave anechoic chamber 200 to be reduced while meeting test conditions, thereby miniaturizing the structure of the microwave anechoic chamber 200.

[0036] refer to Figure 1 and Figure 2 In some embodiments, the vertical distance between the absorbing surface and the test station directly opposite it is five times the wavelength corresponding to the lowest operating frequency band of the CPE antenna. This ensures that the minimum distance between the absorbing surface of the microwave anechoic chamber 200 and the test fixture 300 meets the far-field conditions of the CPE antenna.

[0037] refer to Figure 3In some embodiments, the test fixture 300 is provided with a slot 300a for securing an antenna. Slot 300a serves as the antenna mounting location. Four test cables 400 are also fixedly connected to the test fixture 300. These test cables 400 connect to a network analyzer. By fixing the test cables 400 to the test fixture 300, a stable electrical signal connection between the test cables 400 and the CPE antenna is maintained during testing.

[0038] In some embodiments, the test fixture 300 is made of acrylic material. In this way, the test fixture 300 can avoid the electromagnetic impact caused by the use of metal materials when testing the CPE antenna, thereby ensuring the accuracy of the CPE antenna test.

[0039] refer to Figures 3 to 5 In some embodiments, the test fixture 300 includes a first frame 310, a cover plate 330, and a second frame 320. The first frame 310 is provided with an opening on a side away from the circular center of the microwave anechoic chamber 200. It should be understood that the depth direction of the opening is parallel to the radial direction of the microwave anechoic chamber 200, and the opening connects the top surface and side surface of the first frame 310. The second frame 320 is provided to cover the opening to form a slot 300a on the first frame 310. The cover plate 330 is provided on the top of the first frame 310 and is provided with a through hole 331 for the test cable 400 to pass through. The first frame 310, the second frame 320, and the cover plate 330 are all cut from acrylic sheet. By configuring the test fixture 300 in this manner, the test fixture 300 is easy to assemble and disassemble, and the test cable 400 is also easy to assemble and disassemble.

[0040] Furthermore, the first frame 310 and the second frame 320 , and the first frame 310 and the cover 330 are fixedly connected by bolts.

[0041] refer to Figures 3 to 5 Furthermore, a plurality of second openings 312 are provided at the bottom of the opening 311 along the length of the opening 311, with each second opening 312 spaced apart. The depth direction of the second openings 312 is also parallel to the radial direction of the microwave anechoic chamber 200, and the opening size of the second openings 312 is smaller than the opening size of the opening 311. The second openings 312 communicate with the top of the first frame 310. Thus, by providing the second openings 312, the top of the card slot 300a has openings of different sizes, making it easy to insert or remove the CPE antenna into or from the card slot 300a.

[0042] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A CPE antenna testing device, characterized in that: include: test bench; A microwave darkroom is provided on the test bench, and the microwave darkroom is in a circular shape; The test fixture is arranged on the surface of the test table and located inside the annular structure of the microwave darkroom. There are three test fixtures, each of which is arranged in a 120° array around the annular center of the microwave darkroom. An antenna mounting position is provided on the test fixture, and the antenna mounting positions on each test fixture are arranged back to back and face the upper absorbing surface of the microwave darkroom.

2. The CPE antenna testing device according to claim 1, wherein: The annular height of the microwave darkroom is greater than the vertical beam height of the antenna.

3. The CPE antenna testing device according to claim 1, wherein: The vertical distance between the absorbing surface and the antenna installation position facing it is 5 times the wavelength corresponding to the lowest operating frequency band of the antenna.

4. The CPE antenna testing device according to any one of claims 1 to 3, wherein: The test fixture is provided with a slot for mounting the antenna, which is the antenna mounting position. Four test cables are also fixedly connected to the test fixture, and the test cables are connected to the network analyzer.

5. The CPE antenna testing device according to claim 4, wherein: The testing tool is made of acrylic material.

6. The CPE antenna testing device according to claim 4, wherein: The test fixture includes a first frame, a cover plate and a second frame. The first frame is provided with an opening on a side away from the annular center of the microwave darkroom. The second frame covers the opening to enclose the slot. The cover plate is provided on the top of the first frame. A through hole for the test cable to pass through is provided on the cover plate.

7. The CPE antenna testing device according to claim 6, wherein: A plurality of second openings are arranged at the bottom of the opening along the length direction of the opening, and the second openings are arranged at intervals.

8. The CPE antenna testing device according to claim 6, wherein: The first frame, the second frame and the cover are fixedly connected by bolts.

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