Multi-antenna wireless device air interface test device

Abstract

The present invention discloses an over-the-air test device for a multi-antenna wireless device, comprising: a darkroom, the inner walls of which are provided with absorbing material; and multiple coupling probes, each of which is movably disposed within the darkroom and configured to simultaneously or individually couple energy transmission to antennas within a preset near-field radiation range of the current probe's location. The maximum dimension of all metal within a cross-section within 5 centimeters of the probe tip to the feeder line is less than or equal to 5 centimeters, thereby determining the transceiver performance of the multi-antenna wireless device. The test device according to an embodiment of the present invention can employ individual near-field coupling for antennas and simultaneously or individually perform over-the-air testing on antennas within the near-field radiation range, thereby improving both test efficiency and accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless device performance testing, and in particular to an air interface testing device for multi-antenna wireless equipment. Background Art

[0002] Before wireless devices are released for sale, production line testing of wireless devices mainly tests the transceiver performance of the wireless devices, thereby avoiding the sale of wireless devices whose RF performance does not meet the requirements and affecting the user experience.

[0003] However, in related technologies, the testing method for wireless devices is single-line testing. However, as the number of antennas in wireless devices increases, for example, in MIMO wireless devices, there will be multiple antennas used for communication. If the RF performance of each antenna needs to be tested, the test will take a long time and the test efficiency will be low. Moreover, related technologies are all far-field tests, and the test system cost is high, which needs to be solved. Summary of the Invention

[0004] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0005] Therefore, an object of the present invention is to provide an air interface test device for a multi-antenna wireless device, which can improve the working efficiency and accuracy of the test and is simple and easy to implement.

[0006] To achieve the above objectives, an embodiment of the present invention proposes an air interface testing device for a multi-antenna wireless device, comprising: a darkroom, the inner walls of which are provided with absorbing material; and multiple coupling probes, which can be movably arranged in the darkroom and are used to simultaneously or individually couple and transmit energy to antennas within a preset near-field radiation range of the current probe position. The maximum dimension of all metal within the cross-section within 5 cm from the probe top to the feeder of each coupling probe is less than or equal to 5 cm, so as to obtain the transceiver performance of the multi-antenna wireless device.

[0007] The multi-antenna wireless device air interface test device of the embodiment of the present invention uses multiple coupling probes to simultaneously perform performance tests on each antenna of the wireless device, thereby achieving the purpose of testing multiple antennas simultaneously or individually in the near-field radiation distance. Not only can a separate near-field coupling method be used for the antenna, but also air interface tests can be performed on multiple antennas at the same time, thereby effectively improving the test work efficiency and effectively improving the test accuracy. It is simple and easy to implement.

[0008] In addition, the multi-antenna wireless device air interface test apparatus according to the above embodiment of the present invention may also have the following additional technical features:

[0009] Furthermore, in one embodiment of the present invention, the preset near-field radiation range is obtained according to the following formula:

[0010] or

[0011]

[0012] Wherein, D is the maximum physical size of the multi-antenna wireless device, R is the radius of the near-field radiation range, and λ is the wavelength.

[0013] Optionally, in one embodiment of the present invention, the maximum dimension of the metal in the cross section of each coupling probe is smaller than the maximum physical dimension of the multi-antenna wireless device.

[0014] Optionally, in one embodiment of the present invention, the maximum dimension of the metal in the cross section of each coupling probe is smaller than the maximum physical dimension of the corresponding antenna.

[0015] Optionally, in one embodiment of the present invention, when the multi-antenna wireless device is a mobile terminal, the coupling probe is a broadband probe with a preset bandwidth.

[0016] Furthermore, in one embodiment of the present invention, it further includes: a placement component for placing the multi-antenna wireless device.

[0017] Furthermore, in one embodiment of the present invention, it further comprises: a plurality of movable components, each of the plurality of movable components being respectively connected to each of the plurality of coupling probes to change the position of the corresponding coupling probe.

[0018] Furthermore, in one embodiment of the present invention, it further comprises: a vertical position adjustment member, wherein the vertical position adjustment member is connected to the placement component to adjust the vertical height of the placement component.

[0019] Furthermore, in one embodiment of the present invention, it also includes: a first control component, which is connected to the vertical position adjustment component and the placement component to control the vertical position adjustment component and the placement component to perform corresponding actions so that the multi-antenna wireless device reaches the target position.

[0020] Furthermore, in one embodiment of the present invention, it also includes: a second control component, which is respectively connected to each of the mobile components to adjust the position and direction of each of the multiple coupling probes according to the target position of the multi-antenna wireless device.

[0021] Additional aspects and advantages of the present invention will be set forth in part in the description which follows and, in part, will be obvious from the description which follows, or may be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0023] Figure 1 A schematic structural diagram of a multi-antenna wireless device according to related art;

[0024] Figure 2 A schematic diagram of a far-field test of an antenna wireless device according to the related art;

[0025] Figure 3 A schematic diagram of a near-field test of an antenna wireless device according to the related art;

[0026] Figure 4 A schematic diagram of a coupling test of an antenna wireless device according to the related art;

[0027] Figure 5 2 is a schematic structural diagram of an air interface test apparatus for a multi-antenna wireless device according to an embodiment of the present invention;

[0028] Figure 6 is a schematic structural diagram of a coupling probe according to an embodiment of the present invention;

[0029] Figure 7 2. It is a schematic diagram showing the principle of an air interface test apparatus for a multi-antenna wireless device according to an embodiment of the present invention;

[0030] Figure 8 FIG. 1 is a schematic diagram showing the principle of an air interface testing apparatus for a multi-antenna wireless device according to another embodiment of the present invention. DETAILED DESCRIPTION

[0031] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0032] Before describing the multi-antenna wireless device air interface testing apparatus according to an embodiment of the present invention, taking multi-antenna wireless terminal testing as an example, the defects of far-field testing, existing near-field testing technology, and coupling testing are briefly described.

[0033] Specifically, if Figure 1 As shown in the figure, a complete 4-antenna wireless terminal is used to simulate the device under test. A PIFA antenna is placed on each of the four corners of a 140×70mm PCB board. The four antennas are connected to the same ground and the antennas operate at 3.5GHz.

[0034] In the far-field test of related technologies, such as Figure 2 As shown, the DUT is placed in a far-field darkroom. The test method is as follows: by rotating the turntable polar axis to change the relative position of the DUT and the test antenna, all radiation and reception performance of the DUT can be tested. However, the far-field test distance is far and needs to meet the standard distance measurement requirements, where the test distance is greater than 2D. 2 / , D is the maximum physical size of the device under test, and λ is the wavelength. This results in a larger anechoic chamber volume and a larger occupied space, which is easily subject to site restrictions. In addition, each antenna is opened and evaluated separately, resulting in low test efficiency.

[0035] In the near-field test of related technologies, such as Figure 3 As shown, multiple test antennas are placed inside a shielded room to perform radiation or reception tests on a fixed position of the DUT, with the overall value or maximum value used as the performance criterion for evaluating the DUT. However, while near-field testing offers a shorter measurement range and allows for a smaller shielded room, minimizing space and overcoming the shortcomings of far-field testing, it requires evaluating the power received by each test antenna, resulting in lower test efficiency and uncertain accuracy.

[0036] In the coupling test of related technologies, such as Figure 4 As shown, one or more coupling plates or coupling antennas are placed around the DUT, and all antennas are tested using a single coupling antenna. Multiple coupling antennas are placed to accommodate broadband operating conditions, such as one antenna for each test frequency band. While the shielded room can be made very small and cost-effective, testing each antenna individually for a multi-antenna DUT (not all antennas can be tested simultaneously) takes a long time. Furthermore, the coupling antenna or coupling plate may be far from some antennas, resulting in insufficient gain and low test accuracy, making test accuracy uncertain.

[0037] The present invention is based on the above problem and proposes an air interface testing device for a multi-antenna wireless device.

[0038] The following describes an air interface testing apparatus for a multi-antenna wireless device according to an embodiment of the present invention with reference to the accompanying drawings.

[0039] Figure 5 It is a structural diagram of an air interface testing apparatus for a multi-antenna wireless device according to an embodiment of the present invention.

[0040] like Figure 5 As shown, the multi-antenna wireless device air interface test apparatus 10 includes: a darkroom 100 and a plurality of coupling probes (as shown in the figure, coupling probe 201, coupling probe 202, coupling probe 203 and coupling probe 204).

[0041] The inner wall of the darkroom 100 is provided with absorbing material 101. Multiple coupling probes are movably disposed within the darkroom 100, and are used to simultaneously or individually couple energy to antennas within a preset near-field radiation range at the current probe location. The maximum dimension of all metal cross-sections within 5 cm from the probe tip to the feeder line is less than or equal to 5 cm, thereby obtaining the transceiver performance of the multi-antenna wireless device 20. It is understood that the movable arrangement allows each of the multiple coupling probes to correspond to each of the multiple antennas of the multi-antenna wireless device 20 within a preset near-field radiation distance, and simultaneously or individually couple energy to the multi-antenna wireless device 20 under test to obtain the transceiver performance of the multi-antenna wireless device 20. The test device 10 of the embodiment of the present invention can employ individual near-field coupling for antennas and can simultaneously or individually test multiple antennas within the near-field radiation range, thereby improving both test efficiency and test accuracy.

[0042] Specifically, if Figure 6 As shown, it can be understood that the portion of the coupling probe within 5 cm from the top of the radiation to the feed line satisfies the following conditions: the maximum metal size of all cross sections is less than or equal to 5 cm. For example, the coupling probe consists of three parts: dielectric, metal and feed line. The feed line is used to feed the RF signal. The top of the coupling probe is the radiation top. If the coupling probe is within 5 cm from the top of the feed line, any cross section satisfies the following conditions: the maximum metal size of all cross sections within 5 cm from the top to the feed line is less than 5 cm. It should be understood by those skilled in the art that for Figure 6 Any probe in the system can be configured in a similar way, and is not limited to this type of antenna design, as long as the maximum metal size in the cross section is less than 5 cm, thereby simultaneously or individually coupling and transmitting energy to the antenna within the near-field radiation distance of the current probe location.

[0043] Optionally, in one embodiment of the present invention, the preset near-field radiation range is obtained according to the following formula:

[0044] or

[0045]

[0046] Where D is the maximum physical size of the multi-antenna wireless device, R is the radius of the near-field radiation range, that is, R is the near-field radiation distance, and λ is the wavelength.

[0047] In an embodiment of the present invention, the embodiment of the present invention implements a near-field radiation test on the device under test, but is essentially different from the near-field test in the related art. The near-field radiation test is described in detail below:

[0048] For example, the distance between the coupling probe and the antennas of the multi-antenna wireless device 20 in the embodiments of the present invention is less than the far field, and it is in near-field coupling. Specifically, for a small electrically sized DUT (physical size less than half of the wavelength), the definition of the position where the distance R from the DUT antenna is located is:

[0049] It belongs to the reactive near field, where λ represents the wavelength;

[0050] It belongs to the radiative near field;

[0051] λ < R ≤ 2λ belongs to the transition zone;

[0052] 2λ < R belongs to the radiative far field.

[0053] For such DUTs, the distance between the coupling probe and the DUT antenna is less than the far-field condition, and it is in the reactive near field

[0054] For a large electrically sized DUT (physical size greater than or equal to half of the wavelength), the definition of the position where the distance R from the DUT antenna is located is

[0055] It belongs to the radiative near field, where D is the size of the DUT antenna;

[0056] It belongs to the Fresnel zone;

[0057] It belongs to the radiative far field

[0058] For such DUTs, the distance between the coupling probe and the DUT antenna is less than the far-field condition, and it is in the radiative near field.

[0059] In summary, the test device 10 in the embodiments of the present invention can not only have one coupling probe corresponding to one DUT antenna, so as to quickly obtain the information of each antenna of the multi-antenna wireless device 20, and even perform tests simultaneously, but also, compared with the related technologies, can have a smaller test path loss. Each DUT antenna has a coupling antenna close to and corresponding to it, belonging to near-field coupling, and its path loss is much smaller than that of the test systems in all the solutions in the related technologies. Therefore, the test dynamic range is large.

[0060] Furthermore, in an embodiment of the present invention, the maximum size of the metal in the cross-section of each coupling probe is less than the maximum physical size of the multi-antenna wireless device, and / or, the maximum size of the metal in the cross-section of each coupling probe is less than the maximum physical size of the corresponding antenna.

[0061] It can be understood that in an embodiment of the present invention, the antenna aperture of the coupling probe size (excluding the feeder line) is smaller than the maximum physical size of the multi-antenna wireless device 20, and / or the antenna aperture of the coupling probe size (excluding the feeder line) is smaller than the maximum physical size of the corresponding antenna under test on the multi-antenna wireless device 20, thereby ensuring the accuracy of the test.

[0062] Optionally, in one embodiment of the present invention, when the multi-antenna wireless device is a mobile terminal, the coupling probe is a broadband probe with a preset bandwidth, such as a probe covering all sub6G frequency bands.

[0063] For example, in sub-6G scenarios, when a mobile phone is used as the DUT, at least four coupling probes are located at the four corners of the DUT. These coupling probes can be broadband probes. This eliminates the need to switch antennas when changing test frequencies, allowing for simultaneous testing of the transmit and receive performance of multiple antennas. This significantly improves test efficiency and reduces test time. The preset bandwidth can be set by those skilled in the art based on actual conditions.

[0064] In addition, in one embodiment of the present invention, the testing device 10 of the embodiment of the present invention further includes a placement component, wherein the placement component is used to place the multi-antenna wireless device 20 .

[0065] It is understood that a placement component, such as a placement table equipped with a clamp, can be provided in the darkroom 100, so that the multi-antenna wireless device 20 can be placed on the placement component to facilitate over-the-air testing of the multi-antenna wireless device 20. In addition, the placement component can also adjust the horizontal position of the wireless device 20, such as controlling the wireless device 20 to change its position clockwise to meet testing requirements.

[0066] Furthermore, in one embodiment of the present invention, the testing device 10 of the embodiment of the present invention further includes: a plurality of moving components, wherein each of the plurality of moving components is respectively connected to each of the plurality of coupling probes to change the position of the corresponding coupling probe.

[0067] It is understandable that the moving component may be a moving platform provided with rollers, so as to arbitrarily adjust the position of the coupling probe to achieve a corresponding setting with the antenna of the device under test.

[0068] Furthermore, in one embodiment of the present invention, the testing device 10 of the present invention further includes a vertical position adjustment member, wherein the vertical position adjustment member is connected to the placement assembly to adjust the vertical height of the placement assembly.

[0069] It can be understood that a vertical position adjustment member is provided at the bottom of the chamber, such as two brackets are provided at relative intervals, each bracket can include two hinged rods, the lower end of each rod is rotatably matched with the bottom of the darkroom and the upper end is movably matched with the placement table, so that the placement position of the multi-antenna wireless device 20 can be adjusted by adjusting the vertical height of the placement component relative to the bottom of the darkroom to adjust according to the test requirements, such as setting the multi-antenna wireless device 20 in the center of the darkroom 100.

[0070] In an embodiment of the present invention, the placement component and the placement component can be movably set through the vertical position adjustment member, so as to facilitate the horizontal and / or vertical position adjustment of the antenna wireless device 20 and improve the flexibility and applicability of the device.

[0071] Furthermore, in one embodiment of the present invention, the testing apparatus 10 of the present invention further includes a first control component. The first control component is connected to the vertical position adjustment member and the placement member to control the vertical position adjustment member and the placement member to perform corresponding actions, thereby allowing the multi-antenna wireless device 20 to reach a target position.

[0072] It is understandable that the above-mentioned vertical position adjustment parts and placement components can be manually controlled or automatically controlled by a preset program, such as automatically raising and rotating the multi-antenna wireless device 20 to the test position required for the test, that is, the target position, to meet the test requirements.

[0073] Furthermore, in one embodiment of the present invention, the testing device 10 further includes a second control component. The second control component is connected to each of the mobile components to adjust the position and orientation of each of the multiple coupling probes according to the target position of the multi-antenna wireless device 20.

[0074] It will be appreciated that the test device 10 of this embodiment of the present invention can adjust the position of the coupling probes and multi-antenna wireless device 20 manually or automatically via a control assembly, thereby enhancing the intelligence and controllability of the test device. Specifically, the device under test is placed on the placement assembly, and the coupling probes are placed on the mobile assembly. Each coupling probe is connected to a mobile assembly and can be moved independently. The placement assembly can be raised and lowered, thereby achieving a one-to-one correspondence between the coupling probes and the antennas, which is more flexible and simple to implement.

[0075] For example, the operator can place the device under test on the placement component after it is fixed, and then control the placement component and the vertical position adjustment component by manually adjusting or controlling the component to move the device under test to the center of the darkroom 100, and then control the moving component by manually adjusting or controlling the component to move the coupling probe to the corresponding position of each antenna of the device under test, so as to perform near-field coupling antenna testing within the near-field radiation distance.

[0076] It can be understood that in an embodiment of the present invention, the multi-antenna wireless device 20, i.e., the device under test, is placed in a shielded darkroom 100, the inner wall of the darkroom 100 is provided with an absorbing material 101, and a plurality of coupling probes are placed inside the darkroom 100. The function of the coupling probes is that each coupling probe is aimed at an antenna on the multi-antenna wireless device 20 for energy coupling transmission. The coupling probes are all located within the near-field radiation range of the multi-antenna wireless device 20, and the position and direction of the coupling antenna can be adjusted so that each coupling antenna forms a one-to-one corresponding coupling transmission with the corresponding antenna of the multi-antenna wireless device 20.

[0077] Compared with far-field testing, near-field testing and coupling testing in related technologies, the embodiments of the present invention can realize rapid production line testing of multi-antenna wireless terminals, with high testing efficiency, and can effectively ensure the accuracy and precision of the test, effectively meeting the testing requirements.

[0078] The device 10 of the embodiment of the present invention is described below by taking serial testing and parallel testing as examples.

[0079] Example 1:

[0080] First, adjust the position and direction of the coupling probes for the multi-antenna wireless device 20 to find the position and direction of each coupling probe that meets the test requirements. Take the power test of a mobile phone production line with 4 antennas as an example:

[0081] Antenna naming Figure 7 As shown, the mobile phone antennas are named as antennas under test 1, 2, 3, and 4; the coupling probes are named as coupling probes 5, 6, 7, and 8.

[0082] Adjust the positions of all coupling probes so that they are physically located in the near field of the mobile phone and close to the corresponding antenna positions. In this example, antenna 1 under test corresponds to coupling antenna 5; antenna 2 under test corresponds to coupling antenna 6; antenna 3 under test corresponds to coupling antenna 7; and antenna 4 under test corresponds to coupling antenna 8.

[0083] It is understandable that this step only needs to be done once for a product (or similar products) to find the position where the coupling probe meets the test antenna.

[0084] Secondly, each time you turn on one antenna under test, test the power coupled to the corresponding coupling antenna. For example, turn on antenna No. 1 under test (turn off all other antennas under test), read the coupled energy of coupling antenna No. 5 and record it as P5; turn on antenna No. 2 under test (turn off all other antennas under test), read the coupled energy of coupling antenna No. 6 and record it as P6; turn on antenna No. 3 under test (turn off all other antennas under test), read the coupled energy of coupling antenna No. 5 and record it as P7; turn on antenna No. 4 under test (turn off all other antennas under test), read the coupled energy of coupling antenna No. 5 and record it as P8; after completion, compare the differences between P5, P6, P7, and P8 and the preset values ​​or the test values ​​of the golden machine (the golden machine refers to the standard machine that has been verified to have no problems) to determine whether there is a problem.

[0085] Example 2:

[0086] First, adjust the position and direction of the coupling probes for the multi-antenna wireless device 20 to find the position and direction of each coupling probe that meets the test requirements. Take the power test of a mobile phone production line with 4 antennas as an example:

[0087] Antenna naming Figure 8 As shown, the mobile phone antennas are named as antennas under test 1, 2, 3, and 4; the coupling probes are named as coupling probes 5, 6, 7, and 8.

[0088] Adjust the positions of all coupling probes so that they are physically located in the near field of the phone and close to the corresponding antennas. In this example, antenna 1 (under test) corresponds to coupling antenna 5; antenna 2 (under test) corresponds to coupling antenna 6; antenna 3 (under test) corresponds to coupling antenna 7; and antenna 4 (under test) corresponds to coupling antenna 8. The coupling energy between corresponding antennas must be greater than the coupling energy between non-corresponding antennas. The details are as follows.

[0089] With the mobile phone fixed, let's use the position adjustment of coupling antenna 5 as an example: Adjust coupling antenna 5 so that only coupling antenna 5 transmits, and the energy coupled to antenna 1 is greater than the energy coupled to all other antennas. Similarly, adjust coupling antenna 6 so that only coupling antenna 6 transmits, and the energy coupled to antenna 2 is greater than the energy coupled to all other antennas. Adjust coupling antenna 7 so that only coupling antenna 7 transmits, and the energy coupled to antenna 3 is greater than the energy coupled to all other antennas. Adjust coupling antenna 8 so that only coupling antenna 8 transmits, and the energy coupled to antenna 4 is greater than the energy coupled to all other antennas.

[0090] This step only needs to be done once for a product (or similar products) to find the position where the coupling probe meets the test antenna.

[0091] Secondly, turn on the antennas under test at the same time and test the power coupled to the corresponding coupling antennas. For example: record the power of coupling antenna No. 5 as Q5; record the power of coupling antenna No. 6 as Q6; record the power of coupling antenna No. 7 as Q7; record the power of coupling antenna No. 8 as Q8; after completion, compare the differences between Q5, Q6, Q7, Q8 and the preset values ​​or the test values ​​of the golden machine (the golden machine refers to the standard machine that has been verified to have no problems) to determine whether there is a problem.

[0092] In summary, in the embodiments of the present invention, not only is the test solution fast, but each coupling probe corresponds to a tested antenna, and information about each antenna of the tested device can be quickly obtained. In addition, in the second embodiment, information about all four tested antennas can be obtained at once, making the test speed much faster than that of related technologies. In comparison, the test path loss is smaller. Each tested antenna has a corresponding coupling antenna close to it, which belongs to near-field coupling. Its path loss is much smaller than all test systems in related technologies, so the test dynamics are large.

[0093] According to the air interface test apparatus for a multi-antenna wireless device according to an embodiment of the present invention, a performance test is performed on each antenna of a wireless device simultaneously or individually through multiple coupling probes, which not only effectively meets the test requirements but also achieves the purpose of simultaneous testing of multiple antennas. Not only can a separate near-field coupling method be adopted for the antenna, that is, each different antenna adopts a separate coupling method, but multiple antennas can be tested simultaneously. In addition, the distance between the coupling probe and the antenna of the device under test is a near-field radiation distance, which is smaller than the far-field distance and is in near-field coupling, thereby effectively improving the work efficiency of the test and effectively improving the accuracy of the test, and is simple and easy to implement.

[0094] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0095] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0096] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A multi-antenna wireless device air interface test device, characterized in that: include: A darkroom, wherein an absorbing material is provided on the inner wall of the darkroom; Multiple coupling probes are movably arranged in the darkroom and are used to simultaneously or individually couple and transmit energy to antennas within a preset near-field radiation range of the current probe position, wherein the maximum size of all metal in the cross-section within 5 cm from the probe top to the feeder line of each coupling probe is less than or equal to 5 cm, so as to obtain the transceiver performance of the multi-antenna wireless device; each coupling probe of the multiple coupling probes is set in a one-to-one correspondence with each antenna of the multi-antenna wireless device, and is set within a preset near-field radiation distance to form a one-to-one coupling transmission.

2. The device according to claim 1, characterized in that The preset near-field radiation range is obtained according to the following formula: ,or ， Wherein, D is the maximum physical size of the multi-antenna wireless device, is the radius of the near-field radiation range, is the wavelength.

3. The device according to claim 1, characterized in that The maximum dimension of metal in the cross section of each coupling probe is smaller than the maximum physical dimension of the multi-antenna wireless device.

4. The device according to claim 1 or 3, characterized in that The maximum dimension of the metal in the cross section of each coupling probe is smaller than the maximum physical dimension of the corresponding antenna.

5. The device according to claim 1, characterized in that When the multi-antenna wireless device is a mobile terminal, the coupling probe is a broadband probe with a preset bandwidth.

6. The device according to claim 1, characterized in that Also includes: A placement component is used to place the multi-antenna wireless device.

7. The device according to claim 6, characterized in that Also includes: A plurality of movable components, each of the plurality of movable components is respectively connected to each coupling probe of the plurality of coupling probes to change the position of the corresponding coupling probe.

8. The device according to claim 7, characterized in that Also includes: A vertical position adjusting member is connected to the placement component to adjust the vertical height of the placement component.

9. The device according to claim 8, characterized in that Also includes: A first control component is connected to the vertical position adjustment component and the placement component to control the vertical position adjustment component and the placement component to perform corresponding actions so that the multi-antenna wireless device reaches the target position.

10. The device according to claim 9, characterized in that Also includes: A second control component is connected to each of the moving components respectively to adjust the position and direction of each of the plurality of coupling probes according to the target position of the multi-antenna wireless device.

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