A test device and a test method for electrical performance of antenna element

Abstract

The present invention provides an antenna vibrator electrical performance test device and a test method. The device includes: a reflector, a PCB board, a welding seat and a conductive material; the reflector, the PCB board and the welding seat are assembled in sequence; the welding seat has a cavity inside, and the conductive material is arranged in the cavity; a first through hole is arranged on the reflector, and a second through hole is arranged on the PCB; the metal feed pin in the antenna to be tested can pass through the first through hole and the second through hole and then contact the conductive material, thereby making the conductive material contact the bottom of the welding seat. The test device can test the electrical performance of the antenna vibrator under conditions close to the actual application scenario when the antenna to be tested and the device are not welded, and can achieve 100% test accuracy and reduce test costs.

Description

Technical Field

[0001] The invention belongs to the technical field of antenna testing, and in particular relates to a testing device and a testing method for the electrical performance of an antenna element. Background Art

[0002] Massive antenna technology, also known as Msaaive MIMO, is a key technology for 5G mobile communications. As the name suggests, hundreds of antennas (128, 256 or more) are installed at the base station end, so that hundreds of antennas can send and receive data.

[0003] These antennas are generally fed with PCB for RF in the AAU system, and the connection between the antenna and the feeding PCB is generally welded. The antenna needs to be tested for RF electrical performance before being assembled to the AAU system. The existing technology uses a special fixture - customized POGO Pin to perform non-welding inspection. However, due to the large difference between the test conditions and the actual application scenarios during the non-welding inspection of the POGO Pin, the test results have large errors, and the accuracy rate is only about 50%, which can easily lead to misjudgment of the quality of the antenna vibrator and can only be used for qualitative analysis. Summary of the invention

[0004] In order to improve the above-mentioned problems existing in the prior art, the present invention provides a device and method for testing the electrical performance of an antenna element in a non-welding situation and under conditions close to actual application scenarios.

[0005] A device for testing the electrical performance of an antenna element, the device comprising: a reflector, a PCB board, a welding seat and a conductive material;

[0006] Wherein, the reflector, PCB board and welding seat are assembled in sequence;

[0007] The welding seat has a cavity inside, and the conductive material is arranged in the cavity;

[0008] A first through hole is arranged on the reflector, and a second through hole is arranged on the PCB; a metal feed pin in the antenna to be tested can pass through the first through hole and the second through hole and contact the conductive material, thereby making the conductive material contact the bottom of the welding seat.

[0009] According to an embodiment of the present invention, the reflective plate is made of metal.

[0010] According to an embodiment of the present invention, a soldering pad is provided on the PCB board for soldering the soldering seat.

[0011] According to the embodiment of the present invention, the shapes and opening sizes of the first through hole and the second through hole are not particularly limited, as long as the metal feed pin can pass through them.

[0012] Preferably, the first through hole and the second through hole may both be circular in shape; more preferably, the axial center lines of the first through hole and the second through hole coincide with each other.

[0013] According to an embodiment of the present invention, the conductive material is selected from conductive glue or conductive foam.

[0014] According to an embodiment of the present invention, the reflection plate is arranged between the antenna to be tested and the PCB board.

[0015] According to an embodiment of the present invention, the cavity of the welding seat is communicated with the first through hole and the second through hole.

[0016] According to an embodiment of the present invention, the metal feed pin serves as a feed port.

[0017] Preferably, the shape and size of the metal feed pin are compatible with the components in the device.

[0018] According to an embodiment of the present invention, the antenna to be tested further includes a dipole unit.

[0019] According to an embodiment of the present invention, when the antenna to be tested is assembled in the device, the vibrator unit, the metal feed pin, the conductive material, the soldering seat and the PCB board are electrically connected.

[0020] According to an exemplary solution of the present invention, the test device for the electrical performance of the antenna element includes: a metal reflector, a PCB board, a welding seat and a conductive material;

[0021] Wherein, the metal reflector, PCB board and welding seat are assembled in sequence;

[0022] The welding seat has a cavity inside, and the conductive material is arranged in the cavity;

[0023] A first through hole is provided on the metal reflective plate, and a second through hole is provided on the PCB board; the first through hole and the second through hole are both circular in shape, and the axial center lines of the first through hole and the second through hole coincide with each other;

[0024] The antenna to be tested comprises an oscillator unit and a metal feed pin. The metal feed pin in the antenna to be tested can contact the conductive material after passing through the first through hole and the second through hole, thereby making the conductive material contact the bottom of the welding seat.

[0025] The present invention also provides a method for testing the electrical performance of an antenna vibrator using the above-mentioned device, comprising the following steps: passing a metal feed pin in the antenna to be tested through a first through hole and a second through hole, and then contacting the metal feed pin with a conductive material, so that the conductive material contacts the bottom of a welding seat, and the conductive material, the welding seat and the PCB board are electrically connected, so that an electrical signal is transmitted from the vibrator unit of the antenna to be tested to the PCB board, thereby testing the electrical performance of the antenna vibrator.

[0026] According to an embodiment of the present invention, the conditions for testing the electrical performance of the antenna element include: testing the standing wave ratio (VSWR) of the antenna element in a frequency band of 2.5 GHz to 3.6 GHz.

[0027] According to an embodiment of the invention, in the above method, the antenna to be tested and the device are fixed in a non-welding manner, for example, by simple assembly, such as rivet fixing or quick-release fixture fixing.

[0028] Beneficial effects of the present invention:

[0029] The present invention provides an antenna vibrator electrical performance testing device, wherein conductive glue or conductive foam is placed at the bottom of a welding seat, the welding seat is welded on a PCB board, the PCB board is assembled to the back side of a reflecting plate, the antenna vibrator is assembled to the front side of the reflecting plate, both the PCB board and the reflecting plate are provided with holes, a metal feed pin can pass through a first through hole of the reflecting plate and a second through hole of the PCB board and be inserted into the welding seat to contact with a conductive material, the conductive material, the welding seat and the PCB board are electrically connected, so that an electrical signal is transmitted from the vibrator unit of the antenna to be tested to the PCB board, thereby enabling subsequent detection work.

[0030] The test device can test the electrical performance of the antenna vibrator under conditions close to actual application scenarios (i.e., welding connection) when the antenna to be tested is not welded to the device. However, the use of the device and test method provided by the present invention can ensure 100% test accuracy of the electrical performance of the antenna vibrator and reduce the test cost. The test effect can achieve the same effect as the direct welding test in the prior art, and after the test, it will not affect the appearance of the antenna structure, will not leave marks on the vibrator unit and the metal feed pin, and will not affect the sales of the product and the subsequent production process of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 A schematic diagram of the exploded structure viewed from top to bottom of the device for testing the electrical performance of an antenna element provided in Example 1;

[0032] Figure 2 A schematic diagram of the exploded structure of the antenna element electrical performance testing device provided in Example 1 viewed from bottom to top;

[0033] Figure 3 It is a cross-sectional view of the test device of Example 1 after being assembled with the antenna to be tested.

[0034] Figure 4 This is a schematic diagram of the structure of the welding test device of comparative example 1.

[0035] Figure 5 The test results of the test device of Example 1 and Comparative Example 1 on the electrical performance of the antenna element.

[0036] Reference numerals:

[0037] 1- soldering seat, 2- conductive foam, 3- metal feed pin, 4- PCB board, 5- metal reflector plate, 6- oscillator unit, 7- solder pile. DETAILED DESCRIPTION

[0038] The technical scheme of the present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that the following embodiments are only exemplary descriptions and explanations of the present invention and should not be construed as limiting the scope of protection of the present invention. All technologies implemented based on the above content of the present invention are included in the scope that the present invention is intended to protect.

[0039] Unless otherwise specified, the raw materials and reagents used in the following examples are commercially available or can be prepared by known methods.

[0040] Example 1

[0041] like Figure 1-3 The test device for the electrical performance of the antenna element of the structure shown includes: a welding seat 1, a conductive foam 2, a PCB board 4, and a metal reflector 5;

[0042] The metal reflector 5, the PCB board 4 and the welding seat are assembled in order, and the PCB board 4 and the welding seat 1 are assembled together by welding to form a PCB assembly; the PCB assembly is fixed on the back of the metal reflector 5, and the front of the metal reflector 5 is used to assemble the antenna to be tested during testing. The welding seat 1 is a hollow cavity for placing the conductive foam 2.

[0043] A first through hole is provided on the metal reflector plate 5, and a second through hole is provided on the PCB board 4; the first through hole and the second through hole are both circular in shape, and the axial center lines of the first through hole and the second through hole coincide with each other;

[0044] The antenna to be tested is composed of a vibrator unit 6 and a metal feed pin 3. The metal feed pin 3 can pass through the first through hole and the second through hole, be inserted into the cavity of the soldering base 1, and contact the conductive foam 2, so that the conductive foam 2 fills the gap between the metal feed pin 3 and the soldering base 1 through deformation. The conductive foam 2 will be fully in contact with the metal feed pin 3 and conduct, and the conductive foam 2 is connected to the soldering base 1, so that the electrical signal is transmitted from the vibrator to the PCB board 4, so that subsequent detection work can be carried out.

[0045] The method for testing the electrical performance of an antenna element using the device of this embodiment includes the following steps: the antenna to be tested and the device are assembled in a non-welding fixing manner as follows, a metal feed pin in the antenna to be tested is passed through a first through hole and a second through hole, and then contacts the conductive material, so that the conductive material contacts the bottom of the welding seat, and the conductive material, the welding seat and the PCB board are electrically conductive, so that the electrical signal is transmitted from the element unit of the antenna to be tested to the PCB board, and the standing wave ratio (VSWR) of the antenna element is tested in the 2.5GHz-3.6GHz frequency band.

[0046] Comparative Example 1

[0047] Welding test device: Figure 4 The device shown in the figure is different from the device in Example 1 in that it does not have a welding seat 1 with a hollow cavity and a conductive foam placed in the hollow cavity; instead, the metal feed pin 3 of the antenna to be tested is directly passed through the first through hole and the second through hole and then soldered to the corresponding pad of the PCB board to form a solder pile 7.

[0048] Similar to the first embodiment, the standing wave ratio (VSWR) of the antenna vibrator is tested in the 2.5 GHz-3.6 GHz frequency band to determine whether the electrical performance index of the vibrator unit 6 is qualified.

[0049] like Figure 5 As shown, the standing wave ratio test result curve trends of the non-welding test method of Example 1 and the welding test method of Comparative Example 1 are consistent, and the numerical difference is very small, which is far less than the tolerance range.

[0050] Although the test method of comparative example 1 can test the results of the actual application scenario of the antenna to be tested, in actual production, it is necessary to first test whether the performance of the vibrator unit 6 meets the requirements before subsequent assembly and production can be carried out (the actual assembly is also as follows Figure 4 As shown). The test device and method provided in Example 1 can achieve the same effect as direct welding in actual use, and will not affect the appearance of the antenna structure after the test, nor will it affect the subsequent production process of the antenna. The test method using the device in Example 1 can ensure 100% test accuracy and reduce quality costs.

[0051] The above is an explanation of the embodiments of the present invention. However, the present invention is not limited to the above embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A device for testing the electrical performance of an antenna element, characterized in that: The device comprises: a reflector, a PCB board, a welding seat and a conductive material; Wherein, the reflector, PCB board and welding seat are assembled in sequence; The welding seat has a cavity inside, and the conductive material is arranged in the cavity; A first through hole is provided on the reflective plate, and a second through hole is provided on the PCB board; the first through hole and the second through hole are both circular in shape, and the axial center lines of the first through hole and the second through hole coincide with each other; the cavity of the welding seat is connected with the first through hole and the second through hole; The antenna to be tested includes a vibrator unit and a metal feed pin; the metal feed pin in the antenna to be tested can pass through the first through hole and the second through hole and contact the conductive material, thereby making the conductive material contact the bottom of the welding seat, that is, the antenna to be tested and the device of the device are fixed in a non-welding manner; When the antenna to be tested is assembled in the device, the vibrator unit, the metal feed pin, the conductive material, the welding seat and the PCB board are electrically connected.

2. The testing device according to claim 1, characterized in that: The reflective plate is made of metal.

3. The testing device according to claim 1, characterized in that: The PCB board is provided with a soldering pad for soldering the soldering seat.

4. The testing device according to claim 1, characterized in that: The first through hole and the second through hole are both circular in shape; and the axial center lines of the first through hole and the second through hole coincide with each other.

5. The testing device according to claim 1, characterized in that: The conductive material is selected from conductive glue or conductive foam.

6. The testing device according to claim 1, characterized in that: The reflector is arranged between the antenna to be tested and the PCB board.

7. The testing device according to claim 1, characterized in that: The metal feed pin serves as a feed port.

8. The method for testing the electrical performance of an antenna element by using the testing device according to any one of claims 1 to 7, characterized in that: The method comprises the following steps: passing a metal feed pin in the antenna to be tested through a first through hole and a second through hole, and then contacting the metal feed pin with a conductive material, so that the conductive material contacts the bottom of a welding seat, and the conductive material, the welding seat and the PCB board are electrically connected, so that an electrical signal is transmitted from the vibrator unit of the antenna to be tested to the PCB board, thereby testing the electrical performance of the antenna vibrator.

9. The method according to claim 8, characterized in that The conditions for testing the electrical performance of the antenna element include: testing the standing wave ratio of the antenna element in the 2.5 GHz-3.6 GHz frequency band.

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