Antenna test equipment
By introducing drawer and adjustment components into the antenna testing equipment, the problems of low safety and easy equipment damage have been solved, achieving more efficient and safer antenna testing and adapting to the testing needs of different product specifications.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-09
- Publication Date
- 2026-03-06
AI Technical Summary
In the existing technology, antenna testing equipment has problems such as low safety, low testing efficiency and easy damage. In particular, when using the extremely near-field matrix antenna testing device, the staff needs to enter the shielded box to operate, which poses safety risks and is difficult to debug.
The fixed module design of the drawer assembly enables the loading and unloading of electronic products outside the shielded box. Combined with the adjustment component and clamping mechanism, it ensures that the operator or robotic arm can operate outside the shielded box, improving safety. The adjustment component also optimizes the testing accuracy and efficiency.
It improved the safety of workers, reduced the risk of equipment damage, enhanced the flexibility and accuracy of testing, and improved testing efficiency.
Smart Images
Figure CN223977261U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of antenna testing technology, and in particular to an antenna testing device. Background Technology
[0002] In related technologies, performance testing of antennas installed in consumer electronics products typically employs two methods: First, the traditional laboratory testing approach requires constructing a dedicated OTA (Over-The-Air) anechoic chamber for product measurement. Each measurement takes 5 to 8 minutes, and this method suffers from drawbacks such as the large size of the OTA chamber, inflexible transport, limited number of chambers, and low overall measurement efficiency. Second, the production line testing approach utilizes a coupling plate and a shielding box for testing. However, the coupling plate needs to be adjusted for different products to find the optimal testing position, presenting challenges for staff in debugging. Furthermore, the varying sizes and specifications of different products result in a wide variety of coupling plates required for each product.
[0003] To address these issues, related technologies have proposed using an extremely near-field matrix antenna testing device. However, the use of antenna testing equipment equipped with such a device presents a safety concern. Utility Model Content
[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an antenna testing device that allows for the safe replacement of electronic products via a drawer assembly.
[0005] This utility model embodiment provides an antenna testing device, including:
[0006] A shielding box is provided with a shielding cavity, and a mounting position is provided inside the shielding cavity for mounting the electronic product.
[0007] An extremely near-field matrix antenna testing device, located inside the shielded cavity, is used to test the antenna performance parameters of the electronic product;
[0008] The drawer assembly includes a fixed module and a movable module. The fixed module has a mounting position for placing the electronic product. The movable module drives the fixed module to switch between a loading state and a detection state. The loading state is when the fixed module is located outside the shielding box, and the detection state is when the fixed module is located inside the shielding cavity and within the detection range of the ultra-near field matrix antenna testing device.
[0009] The present invention has at least the following beneficial effects: by setting the state switching of the fixed module of the drawer assembly, the workers (manual loading and unloading) or the robotic arm (automatic loading and unloading) are always outside the shielded box during the loading and unloading process of electronic products, which effectively improves the work safety of the workers and reduces the risk of damage to the antenna testing equipment by the workers or the robotic arm.
[0010] According to some embodiments of the present invention, the fixing module includes a limiting seat and a clamping mechanism. The clamping mechanism includes a clamping block movably connected to the limiting seat. The clamping block has a clamping state, which is a state in which the limiting seat and the clamping block surround and form a limiting groove. The limiting groove is used to limit and fix the electronic product.
[0011] According to some embodiments of the present invention, the clamping mechanism further includes an active block, a connecting rod, and a cam wrench. The active block and the clamping block are connected by a connecting rod. The limiting seat is provided with a through hole corresponding to the connecting rod. The cam wrench is provided on the side of the active block away from the connecting rod. The cam wrench is rotatably connected to the limiting seat, and the cam surface of the cam wrench abuts against the active block.
[0012] According to some embodiments of the present invention, the antenna testing equipment further includes an adjustment component, which includes a fixed bracket and an adjustment module. The adjustment component is located in the shielding cavity and connects the shielding box to the ultra-near-field matrix antenna testing device. The ultra-near-field matrix antenna testing device has the mounting position on the side opposite to the adjustment component. The fixed bracket is movably connected to the adjustment module and is used to adjust the distance between the ultra-near-field matrix antenna testing device and the mounting position.
[0013] According to some embodiments of the present invention, the fixed bracket includes a fixed rod extending along the direction of the extreme near-field matrix antenna test device toward the mounting position, the adjustment module includes a locking frame and a connecting plate, the locking frame includes a locking part, and the locking part is connected to the fixed rod;
[0014] The locking part is adapted to switch between a locked state and an unlocked state. The locked state is when the fixing rod is fixed to the locking part, and the unlocked state is when the locking part is movably connected to the fixing rod.
[0015] According to some embodiments of the present invention, the locking part includes two opposing ring arms and a first connecting member. The fixed end of the ring arm is connected to the connecting plate, and the free ends of the two ring arms are connected through the first connecting member and can move relative to each other. The two ring arms are sleeved on the fixed rod, and the first connecting member and the fixed end of the ring arm are respectively located on both sides of the fixed rod.
[0016] According to some embodiments of this utility model, the range of the movable distance between the fixed bracket and the adjustment module is 10 to 45 mm.
[0017] According to some embodiments of the present invention, the adjustment assembly further includes a first adjustment part, which extends along a first direction, and the extreme near-field matrix antenna test device is movably connected to the connecting plate through the first adjustment part;
[0018] And / or,
[0019] The adjustment assembly further includes a second adjustment section extending along a second direction, and the extreme near-field matrix antenna test device is movably connected to the connecting plate through the second adjustment section.
[0020] When both the first adjustment section and the second adjustment section are present, the first direction and the second direction are both perpendicular to the direction of the extreme near-field matrix antenna test device pointing to the mounting position, and are set at an angle.
[0021] According to some embodiments of the present invention, the first adjustment part includes a second connector and a first slot provided in the connecting plate. A portion of the second connector passes through the first slot and is threadedly connected to the extreme near-field matrix antenna test device. The other portion of the second connector and the extreme near-field matrix antenna test device are respectively located on both sides of the first slot and clamp the connecting plate.
[0022] The second adjustment part includes a third connector and a second slot provided on the connecting plate. A portion of the third connector passes through the second slot and is threadedly connected to the ultra-near field matrix antenna test device. The other portion of the third connector and the ultra-near field matrix antenna test device are respectively located on both sides of the second slot and clamp the connecting plate.
[0023] According to some embodiments of the present invention, the adjustment range of the first adjustment part along the first direction is 0 to 40 mm; the adjustment range of the second adjustment part along the second direction is 0 to 40 mm.
[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0025] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0026] Figure 1 This is a schematic diagram of the antenna testing equipment according to an embodiment of the present invention;
[0027] Figure 2 This is a schematic diagram of the adjustment assembly of the antenna testing device according to an embodiment of the present invention;
[0028] Figure 3 This is a schematic diagram of the structure of the fixed module of the antenna testing equipment according to an embodiment of the present invention.
[0029] Figure label:
[0030] 100. Shielding box; 110. Shielding cavity;
[0031] 200. Extremely near-field matrix antenna test device;
[0032] 300, Adjustment assembly; 310, Fixed bracket; 311, Fixed rod; 320, Adjustment module; 321, Locking frame; 3211, Locking part; 3212, Ring arm; 3213, First connecting piece; 322, Connecting plate; 330, First adjustment part; 331, Second connecting piece; 332, First slot; 340, Second adjustment part; 342, Second slot;
[0033] 400. Drawer assembly; 410. Fixed module; 411. Limit seat; 4111. Limit base; 4112. Limit post; 412. Clamping mechanism; 4121. Clamping block; 4122. Driving block; 4123. Connecting rod; 4124. Cam wrench; 413. Limit groove; 420. Moving module;
[0034] 500. Electrical control box; 600. Electronic products. Detailed Implementation
[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0036] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0037] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first," "second," etc., are used in the description, they are only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.
[0038] In the description of this utility model, unless otherwise explicitly defined, the terms "setting", "installation", "connection", etc. should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in combination with the specific content of the technical solution.
[0039] Please refer to Figure 1 (For ease of display, part of the side panel of the shielding box is hidden.) This embodiment discloses an antenna testing device, which includes a shielding box 100, an extremely near-field matrix antenna testing device 200, and a drawer assembly 400. The shielding box 100 is provided with a shielding cavity 110. The extremely near-field matrix antenna testing device 200 is located inside the shielding cavity 110 and is used to test the antenna performance parameters of an electronic product 600. The drawer assembly 400 includes a fixed module 410 and a movable module 420. The fixed module 410 is provided with a mounting position for placing the electronic product 600. The movable module 420 drives the fixed module 410 to switch between a loading state and a testing state. The loading state is when the fixed module 410 is located outside the shielding box 100, and the testing state is when the fixed module 410 is located inside the shielding cavity 110 and within the testing range of the extremely near-field matrix antenna testing device 200.
[0040] It should be noted that in related technologies, performance testing of antennas installed on electronic products typically employs two methods: First, a traditional laboratory testing approach is used. This requires constructing a separate OTA (Over-The-Air) anechoic chamber for product measurement, with each measurement taking 5 to 8 minutes. This approach suffers from drawbacks such as the large size of the OTA chamber, its inflexible transportability, a limited number of chambers, and low overall measurement efficiency. Second, a production line testing approach is used, employing a coupling plate and a shielding box for testing. However, the coupling plate needs to be adjusted for different products to find the optimal testing position, presenting challenges for staff in debugging. Furthermore, the varying sizes and specifications of different products result in a wide variety of coupling plates required for each product.
[0041] To address the above issues, a solution using an extremely near-field matrix antenna test device 200 has been proposed in related technologies. By utilizing the principle of synthesizing approximate plane waves using the antenna array of the extremely near-field matrix antenna test device 200, the distance between the extremely near-field matrix antenna test device 200 and the electronic product 600 is reduced, effectively decreasing the volume of the shielding box 100 required for installing the extremely near-field matrix antenna test device 200. Furthermore, the adjustment range of the array antenna, which is set at close range, is small, effectively improving testing efficiency.
[0042] However, in the use of the near-field matrix antenna test device 200 in related technologies, staff need to enter the shielded box 100 to disassemble and install electronic products 600, which always poses the problem of low safety and easy damage to the antenna test device.
[0043] According to the antenna testing equipment of this utility model embodiment, by setting the state switching of the fixed module 410 of the drawer assembly 400, the workers (manual loading and unloading) or the robotic arm (automatic loading and unloading) are always outside the shielded box 100 during the loading and unloading process of electronic products 600, which effectively improves the work safety of the workers and reduces the risk of damage to the antenna testing equipment by the workers or the robotic arm.
[0044] In this embodiment, the moving module 420 can be a lead screw module, a cylinder, etc., and there is no limitation here.
[0045] In this embodiment, the movable module 420 is located outside the shielding box 100, specifically in the electrical control box 500 at the bottom of the shielding box 100; of course, in other embodiments, the movable module 420 can also be located inside the shielding box 100 to drive the fixed module 410 to move.
[0046] In some embodiments, combined with Figure 1 and Figure 3 As shown, the fixed module 410 includes a limiting seat 411 and a clamping mechanism 412. The clamping mechanism 412 includes a clamping block 4121 movably connected to the limiting seat 411. The clamping block 4121 has a clamping state, which is the state in which the limiting seat 411 and the clamping block 4121 surround and form a limiting groove 413. The limiting groove 413 is used to limit and fix the electronic product 600.
[0047] In this embodiment, the electronic product 600 is placed in the limiting seat 411. The clamping block 4121, located on one side of the electronic product 600, moves towards the electronic product 600, pushing against it until the opposite side of the electronic product 600 abuts against the limiting seat 411. At this point, the clamping block 4121 can no longer move and is in a clamped state, fixing the electronic product 600 in the limiting groove 413. The movement of the clamping block 4121 can be adapted to electronic products 600 of different sizes.
[0048] In this embodiment, the limiting base 411 includes a limiting base 4111 and a plurality of limiting posts 4112 detachably connected to the limiting base 4111. The limiting base 4111 is used to support the electronic product 600. The limiting posts 4112 form part of the inner wall of the limiting groove 413. The limiting posts 4112 play a role in coarse positioning of the electronic product 600, improving the placement efficiency of the electronic product 600. Furthermore, the detachable limiting posts 4112 can be replaced with limiting posts 4112 of different shapes for electronic products 600, improving the adaptability of the antenna testing equipment.
[0049] In some embodiments, combined with Figure 1 and Figure 3 As shown, the clamping mechanism 412 includes an active block 4122, a connecting rod 4123, and a cam wrench 4124. The active block 4122 and the clamping block 4121 are connected by the connecting rod 4123. The limiting seat 411 is provided with a through hole corresponding to the connecting rod 4123. The cam wrench 4124 is provided on the side of the active block 4122 away from the connecting rod 4123. The cam wrench 4124 is rotatably connected to the limiting seat 411, and the cam surface of the cam wrench 4124 abuts against the active block 4122.
[0050] In this embodiment, by rotating the cam wrench 4124, the cam radius corresponding to the contact point between the cam surface and the active block 4122 is changed, thereby pushing the active block 4122 to drive the clamping block 4121 to move through the connecting rod 4123. The rotational motion of the cam wrench 4124 is converted into the linear motion of the clamping block 4121, which saves the operator effort and improves the testing efficiency.
[0051] In other embodiments, the movement of the clamping block 4121 can also be achieved by a cylinder, a slide module, or the like.
[0052] In some embodiments, combined with Figure 1 As shown, the antenna testing equipment also includes an adjustment component 300, which includes a fixed bracket 310 and an adjustment module 320. The adjustment component 300 is located in the shielding cavity 110 and connects the shielding box 100 to the ultra-near-field matrix antenna testing device 200. The ultra-near-field matrix antenna testing device 200 has a mounting position on the side away from the adjustment component 300. The fixed bracket 310 is movably connected to the adjustment module 320 and is used to adjust the distance between the ultra-near-field matrix antenna testing device 200 and the mounting position.
[0053] In this embodiment, by adjusting the relative movement between the module 320 and the fixed bracket 310, the distance between the ultra-near field matrix antenna test device 200 and the electronic product 600 is adjusted, so that the relative position between the antenna of the ultra-near field matrix antenna test device 200 and the antenna of the electronic product 600 reaches the optimal state, thereby reducing test errors and improving test accuracy.
[0054] In some embodiments, combined with Figure 1 and Figure 2 As shown, the fixed bracket 310 includes a fixed rod 311 extending along the direction of the extreme near-field matrix antenna test device 200 toward the installation position (Z direction in the figure). The adjustment module 320 includes a locking frame 321 and a connecting plate 322. The locking frame 321 includes a locking part 3211, which is connected to the fixed rod 311. The locking part 3211 is adapted to switch between a locked state and an unlocked state. The locked state is when the fixed rod 311 and the locking part 3211 are fixed, and the unlocked state is when the locking part 3211 and the fixed rod 311 are movably connected.
[0055] In this embodiment, after the adjustment module 320 and the fixing rod 311 move a suitable distance relative to each other, the locking part 3211 is switched from the unlocked state to the locked state, and the adjustment module 320 and the fixing rod 311 are fixed relative to each other. This achieves the relative fixation of the ultra-near field matrix antenna test device 200 and the electronic product 600, and enables rapid adjustment of the Z-direction distance between the ultra-near field matrix antenna test device 200 and the electronic product 600, thereby improving test efficiency.
[0056] In this embodiment, four fixing rods 311 are provided, and four locking parts 3211 are provided on the locking frame 321 corresponding to the four fixing rods 311. Of course, in other embodiments, the number of fixing rods 311 and locking parts 3211 can be adjusted according to actual needs, and the fixing rods 311 and locking parts 3211 may not be provided in a one-to-one correspondence. For example, five fixing rods 311 are provided, of which four fixing rods 311 are connected to the locking parts 3211.
[0057] In other embodiments, the adjustment module 320 may also be a lead screw module, a slide module, a cylinder, etc., to enable the movement of the ultra-near field matrix antenna test device 200 connected to the adjustment module 320.
[0058] In some embodiments, combined with Figure 1 and Figure 2 As shown, the locking part 3211 includes two opposing ring arms 3212 and a first connecting member 3213. The fixed ends of the ring arms 3212 are connected to the connecting plate 322. The free ends of the two ring arms 3212 are connected through the first connecting member 3213 and can move relative to each other. The two ring arms 3212 are sleeved on the fixing rod 311, and the first connecting member 3213 and the fixed ends of the ring arms 3212 are respectively located on both sides of the fixing rod 311.
[0059] In this embodiment, after the locking part 3211 moves a suitable distance along the fixing rod 311, the two ring arms 3212 move together through the first connector 3213. The two ring arms 3212 gradually approach each other to clamp the fixing rod 311, thereby fixing the locking part 3211 to the fixing rod 311.
[0060] In this embodiment, the first connecting member 3213 can be a bolt, clamp, or other component that enables the engagement and movement of the ring arm 3212.
[0061] In other embodiments, the fixing rod 311 may also be provided with several positioning holes, and the locking frame 321 is provided with fixing holes corresponding to the positioning holes. The fixing holes are connected to the positioning holes at different positions by means of pins, so as to realize the movement of the fixing rod 311 and the adjustment module.
[0062] In some embodiments, the movable distance between the fixed bracket 310 and the adjustment module 320 ranges from 10 to 45 mm. This ensures that the near-field matrix antenna test device 200 and electronic products 600 with different Z-axis heights have a certain adjustment range.
[0063] In one embodiment, combined Figure 1 and Figure 2 As shown, the adjustment assembly 300 further includes a first adjustment section 330, which extends along a first direction. The extreme near-field matrix antenna test device 200 is movably connected to the connecting plate 322 through the first adjustment section 330. In this embodiment, the first direction is the Y-direction shown in the figure.
[0064] In one embodiment, combined Figure 1 and Figure 2 As shown, the adjustment assembly 300 further includes a second adjustment section 340, which extends along a second direction. The extreme near-field matrix antenna test device 200 is movably connected to the connecting plate 322 via the second adjustment section 340. In this embodiment, the second direction is the X direction shown in the figure.
[0065] In one embodiment, combined Figure 1 and Figure 2 As shown, when both the first adjustment unit 330 and the second adjustment unit 340 are present, both the first direction and the second direction are perpendicular to the direction of the near-field matrix antenna test device 200 pointing to the mounting position, and are set at an angle. In this embodiment, the first direction and the second direction are set perpendicularly, but of course, they can also be set at other angles.
[0066] In the above three embodiments, the relative positions of the near-field matrix antenna testing device 200 and the electronic product 600 on the XY plane are adjusted by setting the first adjustment part 330 and the second adjustment part 340, which effectively adapts to electronic products 600 with different antenna positions. Compared with the structure in the prior art that uses fixed parts and rotating parts (similar to a spherical universal joint) to connect the near-field matrix antenna testing device 200 to achieve position adjustment, in this embodiment, the movement of the near-field matrix antenna testing device 200 is divided into three directions: X, Y and Z, which effectively ensures the adjustment accuracy of each individual direction, thereby achieving precise adjustment of the position of the near-field matrix antenna testing device 200.
[0067] In some embodiments, combined with Figure 1 and Figure 2 As shown, the first adjustment part 330 includes a second connector 331 and a first slot 332 provided on the connecting plate 322. A part of the second connector 331 passes through the first slot 332 and is threadedly connected to the ultra-near field matrix antenna test device 200. The other part of the second connector 331 and the ultra-near field matrix antenna test device 200 are respectively located on both sides of the first slot 332 and clamp the connecting plate 322.
[0068] In this embodiment, after the second connector 331 can move a suitable distance along the extension direction of the first slot 332, the second connector 331 can be rotated so that the second connector 331 and the ultra-near field matrix antenna test device 200 gradually approach each other until they are fixed to the clamping connecting plate 322, thereby adjusting the distance between the ultra-near field matrix antenna test device 200 and the electronic product 600 in the first direction (Y direction in the figure).
[0069] In other embodiments, the first adjustment unit 330 can also be a slide module, a lead screw module, a cylinder, etc., which can enable the extreme near-field matrix antenna test device 200 to move relative to the connecting plate 322.
[0070] In some embodiments, combined with Figure 1 and Figure 2 As shown, the second adjustment part 340 includes a third connector (not shown in the figure, but the specific structure can be the same as the second connector 331) and a second slot 342 provided on the connecting plate 322. A part of the third connector passes through the second slot 342 and is threadedly connected to the ultra-near field matrix antenna test device 200. The other part of the third connector and the ultra-near field matrix antenna test device 200 are respectively located on both sides of the second slot 342 and clamp the connecting plate 322.
[0071] In this embodiment, after the third connector can be moved a suitable distance along the extension direction of the second slot 342, the third connector can be rotated so that the third connector and the ultra-near field matrix antenna test device 200 gradually approach each other to the clamping connecting plate 322 for fixation, thereby adjusting the distance between the ultra-near field matrix antenna test device 200 and the electronic product 600 in the second direction (X direction in the figure).
[0072] In other embodiments, the second adjustment unit 340 can also be a slide module, a lead screw module, a cylinder, etc., which can enable the extreme near-field matrix antenna test device 200 to move relative to the connecting plate 322.
[0073] In some embodiments, the adjustment range of the first adjustment part 330 along the first direction is 0 to 40 mm; the adjustment range of the second adjustment part 340 along the second direction is 0 to 40 mm. This ensures that the near-field matrix antenna test device 200 and electronic products 600 with different X- or Y-direction widths have a certain adjustment range.
[0074] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.
Claims
1. An antenna testing apparatus for testing an antenna performance of an electronic product, characterized by, The application relates to an antenna testing device. The antenna testing device comprises a shielding box (100) provided with a shielding cavity (110); an extreme near-field matrix antenna testing device (200) arranged in the shielding cavity (110) and used for detecting an antenna performance parameter of an electronic product (600); and a drawer assembly (400) comprising a fixed module (410) and a moving module (420), wherein the fixed module (410) is provided with a mounting position for placing the electronic product (600), the moving module (420) drives the fixed module (410) to switch between a feeding state and a detection state, the feeding state is a state in which the fixed module (410) is located outside the shielding box (100), and the detection state is a state in which the fixed module (410) is located in the shielding cavity (110) and is within a detection range of the extreme near-field matrix antenna testing device (200). The fixed module (410) comprises a limiting seat (411) and a clamping mechanism (412), the clamping mechanism (412) comprises a clamping block (4121) movably connected to the limiting seat (411), the clamping block (4121) comprises a clamping state, the clamping state is a state in which the limiting seat (411) and the clamping block (4121) surround to form a limiting groove (413), and the limiting groove (413) is used for limiting and fixing the electronic product (600). The clamping mechanism (412) further comprises a driving block (4122), a connecting rod (4123) and a cam wrench (4124), the driving block (4122) and the clamping block (4121) are connected through the connecting rod (4123), the limiting seat (411) is provided with a through hole corresponding to the connecting rod (4123), the cam wrench (4124) is arranged on a side of the driving block (4122) away from the connecting rod (4123), the cam wrench (4124) is rotationally connected to the limiting seat (411), and a cam surface of the cam wrench (4124) abuts against the driving block (4122).
2. The antenna test device of claim 1, wherein, The antenna testing device further comprises an adjusting assembly (300), the adjusting assembly (300) comprises a fixed support (310) and an adjusting module (320), the adjusting assembly (300) is located in the shielding cavity (110), the adjusting assembly (300) connects the shielding box (100) and the extreme near-field matrix antenna testing device (200), and a side of the extreme near-field matrix antenna testing device (200) away from the adjusting assembly (300) is provided with the mounting position; the fixed support (310) and the adjusting module (320) are movably connected, and are used for adjusting a distance between the extreme near-field matrix antenna testing device (200) and the mounting position.
3. The antenna test device of claim 2, wherein, 4. The antenna test device of any one of claims 1 to 3, wherein, 5. The antenna test device of claim 4, wherein, The fixing support (310) comprises a fixing rod (311) extending along a direction in which the extreme near-field matrix antenna testing device (200) points to the installation position, and the adjusting module (320) comprises a locking support (321) and a connecting plate (322), wherein the locking support (321) comprises a locking part (3211) connected with the fixing rod (311); The locking part (3211) is adapted to switch between a locked state and an unlocked state, wherein the locked state is a state in which the fixing rod (311) is fixed with the locking part (3211), and the unlocked state is a state in which the locking part (3211) is movably connected with the fixing rod (311).
6. The antenna test device of claim 5, wherein, The locking part (3211) comprises two oppositely arranged ring arms (3212) and a first connecting piece (3213), the fixed ends of the ring arms (3212) are connected with the connecting plate (322), the free ends of the two ring arms (3212) are connected by the first connecting piece (3213) and can move relative to each other, the two ring arms (3212) are sleeved on the fixing rod (311), and the first connecting piece (3213) and the fixed ends of the ring arms (3212) are located on the two sides of the fixing rod (311), respectively.
7. The antenna test device of claim 5, wherein, The movable distance range of the fixing support (310) and the adjusting module (320) is 10-45 mm.
8. The antenna test device of claim 5, wherein, The adjusting assembly (300) further comprises a first adjusting part (330) extending along a first direction, and the extreme near-field matrix antenna testing device (200) is movably connected with the connecting plate (322) through the first adjusting part (330); And / or, The adjusting assembly (300) further comprises a second adjusting part (340) extending along a second direction, and the extreme near-field matrix antenna testing device (200) is movably connected with the connecting plate (322) through the second adjusting part (340); When the first adjusting part (330) and the second adjusting part (340) exist at the same time, the first direction and the second direction are both perpendicular to the direction in which the extreme near-field matrix antenna testing device (200) points to the installation position, and are arranged at an angle.
9. The antenna test device of claim 8, wherein, The first adjusting part (330) comprises a second connecting piece (331) and a first slot hole (332) arranged on the connecting plate (322), a part of the second connecting piece (331) passes through the first slot hole (332) and is threadedly connected with the extreme near-field matrix antenna testing device (200), and the other part of the second connecting piece (331) is located on the two sides of the first slot hole (332) and clamps the connecting plate (322), respectively. The second adjusting part (340) comprises a third connecting piece and a second slot hole (342) arranged on the connecting plate (322), a part of the third connecting piece passes through the second slot hole (342) and is screwed with the extreme near-field matrix antenna testing device (200), and the other part of the third connecting piece is respectively located on the two sides of the second slot hole (342) and clamps the connecting plate (322).
10. The antenna test device of claim 8, wherein, The adjusting range of the first adjusting part (330) along the first direction is 0-40 mm; and the adjusting range of the second adjusting part (340) along the second direction is 0-40 mm.