Radio frequency testing device for antenna

Abstract

The utility model provides a radio frequency testing device for an antenna. The radio frequency testing device comprises a first shielding body, a second shielding body and a third shielding body, wherein the first shielding body is internally provided with a first accommodating cavity; the second shielding body is arranged in the accommodating cavity, and a test cavity is formed in the second shielding body; the bearing platform is arranged in the accommodating cavity, the bearing platform is suitable for placing an antenna and can be switched between an initial position and a working position, and in the initial position, the bearing platform is far away from the second shielding body; and in the working position, the bearing platform is close to the second shielding body, so that the antenna can be accommodated in the test cavity. According to the technical scheme, the problem that in the prior art, a darkroom for testing an antenna has high space requirements is solved.

Description

Technical Field

[0001] The utility model relates to the field of radio frequency testing, and specifically provides a radio frequency testing device for an antenna. Background Art

[0002] In antenna design, in order to ensure that the designed antenna indicators meet the design requirements, the antenna needs to be tested. When testing the antenna, technicians usually need to obtain many parameters, including but not limited to radiation pattern, gain, impedance or polarization characteristics. In order to test these parameters, testers usually carry out the test process in a darkroom with signal shielding function. There are many types of shielded darkrooms, such as full anechoic chambers, semi-anechoic chambers, and other types of darkrooms designed to meet test requirements. The darkroom occupies a large space, but not all parameter tests need to be carried out in a large space, which causes a certain degree of space waste.

[0003] Therefore, this field needs a new technical solution to solve the above problems. Utility Model Content

[0004] In order to solve the problem of high space requirements in the darkroom for testing antennas in the prior art, the utility model provides a radio frequency testing device for antennas. The radio frequency testing device of the utility model comprises: a first shielding body, a first accommodating cavity is provided inside the first shielding body; a second shielding body, the second shielding body is arranged in the accommodating cavity and a test cavity is provided inside the second shielding body; and a bearing platform, the bearing platform is arranged in the accommodating cavity, the bearing platform is suitable for placing the antenna and can be switched between an initial position and a working position, in which the bearing platform is away from the second shielding body; in the working position, the bearing platform is close to the second shielding body, so that the antenna can be accommodated in the test cavity.

[0005] The utility model sets a first shielding body, through which a darkroom that can absorb signals is simulated, and a second shielding body and a bearing platform are set in the first shielding body to further shield the signal to ensure the accuracy of the test result. The bearing platform is suitable for placing the antenna and can be switched between an initial position and a working position. In the initial position, the bearing platform is away from the second shielding body; in the working position, the bearing platform is close to the second shielding body, so that the antenna can be accommodated in the test cavity. Through the above configuration, in the initial position, the tester can place the antenna on the bearing platform; in the working position, the antenna can receive double-layer protection from the first shielding body and the second shielding body to avoid interference from environmental signals and ensure the accuracy of the measurement results.

[0006] In the preferred technical solution of the above-mentioned radio frequency test device for antenna, the second shielding body includes a shell, the test cavity has a second opening formed on the shell, and the second opening faces the carrier. Through the above-mentioned arrangement, the carrier moves toward the second shielding body to send the antenna placed thereon into the test cavity.

[0007] In the preferred technical solution of the above-mentioned radio frequency test device for antenna, the second shielding body includes a test unit arranged in the test cavity, and in the working position, the test unit is suitable for contacting the antenna. Through the above-mentioned setting, through the setting of the test unit, the antenna only needs to be installed at a suitable position on the support platform and the support platform is switched to the working position, so that the antenna can contact the test unit, which simplifies the test steps and improves the test efficiency.

[0008] In the preferred technical solution of the above-mentioned radio frequency test device for antenna, the support platform includes a floating part, and a clamp is provided on the side of the floating part facing the second shielding body, and the clamp is used to install the antenna. Through the setting of the clamp, the antenna can maintain a stable shape, so as to be tested in the same state in the test cavity, thereby ensuring the stability of the measurement results.

[0009] In the preferred technical solution of the above-mentioned radio frequency test device for antenna, in the working position, the floating part abuts against the housing and the floating part covers the second opening. Through the above-mentioned arrangement, when the support platform is in the working position, the floating part covers the second opening, so that the test cavity is closed, external interference is eliminated, and the accuracy of the test result is ensured.

[0010] In the preferred technical solution of the above-mentioned radio frequency test device for antenna, the support platform also includes a fixed part, which is arranged on the side of the floating part facing away from the second shielding body; an elastic member is arranged between the floating part and the fixed part, one end of the elastic member is fixedly connected to the floating part, and the other end of the elastic member is fixedly connected to the fixed part. Through the arrangement of the elastic member, the floating part can better seal the test cavity, eliminate external interference, and ensure the accuracy of the test results.

[0011] In the preferred technical solution of the above-mentioned radio frequency test device for antenna, a guide rail is further provided in the accommodating cavity, and the fixing portion is slidably connected with the guide rail, so that the carrying platform can switch between the initial position and the working position along the guide rail. Through the above-mentioned arrangement, the carrying platform has a predetermined track, which is convenient for being driven by the driving device.

[0012] In the preferred technical solution of the above-mentioned radio frequency test device for antenna, the first shielding body further includes a first opening connected to the accommodating cavity, and a security device is provided at the first opening. When the security device meets a predetermined condition, the carrying platform can be switched from the initial position to the working position. By providing the security device, the movement of the carrying platform is safer to avoid damage to the equipment or injury to the tester due to misoperation.

[0013] In the preferred technical solution of the above-mentioned radio frequency test device for antenna, the security device includes a relative light emitting unit and a light receiving unit, and when all the light emitted by the light emitting unit is received by the light receiving unit, the support platform can be switched from the initial position to the working position. Through the above-mentioned setting, when the light is blocked, the support platform cannot be switched from the initial position to the working position, so as to avoid damage to the equipment or injury to the tester due to misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0015] Figure 1 It is a structural schematic diagram of an embodiment of a radio frequency testing device for antennas of the utility model;

[0016] Figure 2 It is a partial structural schematic diagram of an embodiment of a radio frequency testing device for antennas of the utility model;

[0017] Figure 3 It is a bottom view of an embodiment of a second shielding body of a radio frequency testing device for an antenna according to the utility model;

[0018] List of reference numerals:

[0019] 100, radio frequency test device; 10, first shielding body; 11, accommodating cavity; 111, first opening; 12, security device; 121, light emitting unit; 122, light receiving unit; 13, first absorbing layer; 14, guide rail; 20, second shielding body; 21, test cavity; 211, second opening; 22, housing; 23, test unit; 231, substrate; 232, probe; 30, carrier platform; 31, floating part; 311, clamp; 32, fixing part; 33, elastic member. DETAILED DESCRIPTION

[0020] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0021] It should be noted that, in the description of the present invention, the terms “first” and “second” are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0022] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] In order to solve the problem of high space requirements in the darkroom for testing antennas in the prior art, the utility model provides a radio frequency test device 100 for antennas. The radio frequency test device 100 of the utility model comprises: a first shielding body 10, wherein a first accommodating cavity 11 is provided inside the first shielding body 10; a second shielding body 20, wherein the second shielding body 20 is arranged in the accommodating cavity 11 and a test cavity 21 is provided inside the second shielding body 20; and a carrying platform 30, wherein the carrying platform 30 is arranged in the accommodating cavity 11, the carrying platform 30 is suitable for placing the antenna and can be switched between an initial position and a working position, wherein the carrying platform 30 is away from the second shielding body 20 in the initial position; and wherein the carrying platform 30 is close to the second shielding body 20 in the working position, so that the antenna can be accommodated in the test cavity 21.

[0024] Figure 1 1 is a schematic diagram of the structure of an embodiment of the utility model of a radio frequency test device for antennas. Figure 1 As shown, the radio frequency test device 100 for antenna of the utility model comprises a first shielding body 10, a second shielding body 20 and a carrying platform 30. The second shielding body 20 and the carrying platform 30 are arranged in the accommodating cavity 11 of the first shielding body 10, and the carrying platform 30 can be switched between an initial position and a working position.

[0025] Continue reading Figure 1In one or more embodiments, the first shielding body 10 is in a substantially cubic shape. A receiving cavity 11 is provided inside the first shielding body 10, and the receiving cavity 11 has a first opening 111, so that the tester can place the antenna on the carrier 30. Further, in one or more embodiments, a security device 12 is provided at the first opening 111, and when the security device 12 meets a predetermined condition, the carrier 30 can be switched from the initial position to the working position to ensure that the tester's hand will not be pinched or other fixtures used for testing will not be damaged during the movement of the carrier 30. Alternatively, the first shielding body 10 can also be set to other suitable shapes. In one or more embodiments, the security device 12 includes a light emitting unit 121 and a light receiving unit 122 that are arranged opposite to each other. When all the light emitted by the light emitting unit 121 is received by the light receiving unit 122, the carrier 30 can be switched from the initial position to the working position. When the light cannot be completely received by the light receiving unit 122, it means that there is an object at the first opening 111. At this time, the support platform 30 cannot be switched from the initial position to the working position, otherwise the object at the first opening 111 may be damaged. Alternatively, the security device 12 may also be configured as other suitable devices that can prevent test personnel from being injured or equipment from being damaged. Alternatively, the security device 12 may also be omitted.

[0026] Continue reading Figure 1 In one or more embodiments, the first shielding body 10 includes a first absorbing layer 13. The first absorbing layer 13 includes a plurality of cones to ensure the effect of absorbing signal waves. The first absorbing layer 13 is arranged on a side of the first shielding body 10 facing the accommodating cavity 11. Alternatively, the first absorbing layer 13 may also be arranged at other suitable positions of the shielding body.

[0027] Figure 2 It is a partial structural schematic diagram of an embodiment of a radio frequency testing device for antennas of the utility model; Figure 3 1 is a bottom view of an embodiment of the second shielding body of the radio frequency testing device for antenna of the utility model. Figure 1 and Figure 2 As shown, in one or more embodiments, the second shielding body 20 is disposed in the accommodating cavity 11. Figure 1 In the orientation shown, the second shielding body 20 is disposed on the top wall of the first shielding body 10 so as to leave enough space in the accommodating cavity 11 to ensure the movement of the carrier 30. Alternatively, the second shielding body 20 may also be disposed at other suitable positions in the accommodating cavity 11. In one or more embodiments, the second shielding body 20 includes a housing 22 and a test cavity 21 disposed inside the housing 22. The housing 22 includes a second absorbing layer to further filter the influence of external signals on the test cavity 21. Based on Figure 2In the illustrated position, the test cavity 21 has a second opening 211 formed on the housing 22 , and the second opening 211 faces downward, that is, toward the carrying platform 30 . Alternatively, the second opening 211 may also be formed at other suitable positions of the second shielding body 20 .

[0028] like Figure 3 As shown, in one or more embodiments, the second shielding body 20 includes a test unit 23 disposed in the test cavity 21. The test unit 23 includes a substrate 231 and a probe 232 formed on the substrate 231, and the probe 232 and the substrate 231 are electrically connected. When the antenna is accommodated in the test cavity 21, a predetermined portion of the antenna is suitable for contacting with the probe 232, so that the performance parameters of the antenna can be tested by the test unit 23. The test unit 23 is arranged opposite to the second opening 211, so that the antenna can directly contact with the probe 232 after being sent into the test cavity 21 from the second opening 211. Alternatively, the test unit 23 can also be arranged at other suitable positions in the test cavity 21, or configured into other suitable structures, so as to facilitate the testing of the antenna.

[0029] Continue reading Figure 2 In one or more embodiments, the carrier 30 has an initial position and a working position. In the initial position, the carrier 30 is away from the second shielding body 20; in the working position, the carrier 30 is close to the second shielding body 20 so that the antenna is accommodated in the test cavity 21. The carrier 30 includes a floating portion 31 and a fixed portion 32. The floating portion 31 is arranged between the second shielding body 20 and the fixed portion 32. A clamp 311 is provided on the side of the floating portion 31 facing the second shielding body 20, and the clamp 311 is used to install the antenna so that the antenna can maintain a substantially same state each time it is sent into the test cavity 21, so as to accurately dock with the probe 232. In one or more embodiments, in the working position, the floating portion 31 abuts against the housing 22 and the floating portion 31 covers the second opening 211. In one or more embodiments, the floating portion 31 is configured to be substantially flat, and the surface of the side facing the second shielding body 20 is a plane so as to cover the second opening 211. Alternatively, the floating portion 31 can also be configured to be other suitable shapes.

[0030] Continue reading Figure 2 In one or more embodiments, a guide rail 14 is provided in the accommodating cavity 11, and the fixing portion 32 is slidably connected to the guide rail 14, so that the carrying platform 30 can switch between the initial position and the working position along the guide rail 14. Alternatively, the guide rail 14 may be omitted, and the carrying platform 30 may be switched between the initial position and the working position by other suitable means.

[0031] Continue reading Figure 2In one or more embodiments, an elastic member 33 is provided between the floating portion 31 and the fixed portion 32. One end of the elastic member 33 is fixedly connected to the floating portion 31, and the other end thereof is fixedly connected to the fixed portion 32, so that when the carrier 30 is switched toward the working position, the floating portion 31 first makes soft contact with the housing 22 to prevent damage to the device. In addition, through the provision of the elastic member 33, the floating portion 31 has a more flexible angle deflection space, so that the floating portion 31 has a better effect of closing the second opening 211, further reducing the interference of external signals on the test process.

[0032] The following is a detailed description of the operation method of the radio frequency test device 100 for antennas of the utility model: first, the carrier 30 is located at the initial position, at which time there is a gap between the floating part 31 and the second shielding body 20, and the tester can clamp the antenna to the fixture 311. During the clamping process, the tester's hand or handheld fixture will trigger the security device 12, so that the security device 12 can never reach the preset condition, that is, the light receiving unit 122 cannot receive all the light emitted by the light emitting unit 121, so as to avoid the misoperation of the carrier 30 rising, thereby damaging the equipment or causing injury to the tester. When the antenna is installed and the security device 12 reaches the preset condition, the carrier 30 can be driven to rise along the guide rail 14 until the carrier 30 reaches the working position. In the working position, the floating part 31 is against the shell 22 of the second shielding body 20, and the floating part 31 covers the second opening 211, so that the test cavity 21 of the second shielding body 20 remains closed, reducing the interference of external signals on the test process. After the test is finished, the support platform 30 can be switched to the initial position along the guide rail 14 again, and the tester can remove the antenna on the fixture 311 and put in a new antenna to be tested, and then start the next test.

[0033] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A radio frequency test device for an antenna, characterized in that: The radio frequency testing device comprises: A first shielding body, wherein a receiving cavity is provided inside the first shielding body; A second shielding body, the second shielding body is disposed in the accommodating cavity and a test cavity is provided inside the second shielding body; and A carrier platform, wherein the carrier platform is arranged in the accommodating cavity, the carrier platform is suitable for placing the antenna and can be switched between an initial position and a working position, wherein in the initial position, the carrier platform is away from the second shielding body; in the working position, the carrier platform is close to the second shielding body, so that the antenna can be accommodated in the test cavity.

2. The radio frequency testing device for antenna according to claim 1, characterized in that: The second shielding body includes a shell, the test cavity has a second opening formed on the shell, and the second opening faces the carrying platform.

3. The radio frequency testing device for antenna according to claim 2, characterized in that: The second shielding body comprises a test unit arranged in the test cavity, and in the working position, the test unit is adapted to contact the antenna.

4. The radio frequency testing device for antenna according to claim 2, characterized in that: The supporting platform includes a floating portion, and a clamp is provided on a side of the floating portion facing the second shielding body, wherein the clamp is used to install the antenna.

5. The radio frequency testing device for antenna according to claim 4, characterized in that: In the working position, the floating portion abuts against the housing and covers the second opening.

6. The radio frequency testing device for antenna according to claim 5, characterized in that: The supporting platform further comprises a fixing portion, and the fixing portion is arranged on a side of the floating portion facing away from the second shielding body; An elastic member is provided between the floating portion and the fixed portion, one end of the elastic member is fixedly connected to the floating portion, and the other end of the elastic member is fixedly connected to the fixed portion.

7. The radio frequency testing device for antenna according to claim 6, characterized in that: A guide rail is further provided in the accommodating cavity, and the fixing portion is slidably connected to the guide rail, so that the bearing platform can be switched between the initial position and the working position along the guide rail.

8. The radio frequency testing device for antenna according to claim 1, characterized in that: The first shielding body further comprises a first opening communicating with the accommodating cavity. A safety device is provided at the first opening. When the safety device meets a predetermined condition, the supporting platform can be switched from the initial position to the working position.

9. The radio frequency testing device for antenna according to claim 8, characterized in that: The security device comprises a light emitting unit and a light receiving unit which are opposite to each other. When all the light emitted by the light emitting unit is received by the light receiving unit, the supporting platform can be switched from the initial position to the working position.

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