Antenna testing equipment

Abstract

The present invention relates to the field of antenna testing technology and provides an antenna testing device, comprising a first test template provided with a test coupling piece; and a second test template for supporting a metal shell having an antenna, the second test template being movable to drive the metal shell toward and away from the test coupling piece, the test coupling piece being in gap fit with the antenna during testing. The antenna testing device provided by the present invention has the following advantages: first, the test coupling piece is provided on the first test template, and utilizing the coupled feeding principle of the antenna, the test coupling piece can test antenna performance without contacting the metal shell, thus simplifying the structure; second, the test coupling piece is non-contact for detection, thereby improving testing efficiency; third, since no additional cylinder is required, design limitations are avoided; and finally, based on the coupled feeding principle of the antenna, one test coupling piece can simultaneously measure multiple antennas, thereby saving the manufacturing cost of the antenna testing device.

Description

Technical Field

[0001] The present invention relates to the technical field of antenna testing, and more particularly to an antenna testing device. Background Art

[0002] Due to the design and antenna requirements, current wireless terminals must utilize a metal casing as part of the antenna. This antenna is typically slotted into the metal casing's edge. Typical antennas include 2 / 3 / 4G antennas and Wi-Fi / GPS antennas. With the advent of 5G antennas, the number of antennas on metal casings is increasing. Therefore, during antenna testing, antenna test points appear on both the front and side surfaces of the metal casing. Conventional testing utilizes a test probe that contacts the metal casing's surface. A single cylinder drives the test probe, enabling testing of antenna test points on the same surface. However, if the metal casing has both front and side test points, or multiple side test points, additional cylinders are required to move the test probe in the corresponding directions for antenna performance testing, increasing the structural complexity of the test equipment. This also increases the test time by correspondingly increasing the duty cycle of one or more cylinders. Furthermore, if antenna test points on two surfaces in different directions are too close together, the cylinder-plus-test-probe approach may not be able to perform performance testing due to space constraints, further limiting the testing process.

[0003] In addition, the test probes at the test points are connected to the network analyzer through the connector of the test equipment. The consistency of the standing wave ratio of the network analyzer is used to determine whether the metal shell has passed the test. Moreover, each antenna must be connected to a port of the network analyzer. The more antennas there are, the more network analyzers are required, which in turn leads to an increase in the cost of the test equipment. Summary of the Invention

[0004] The object of the present invention is to provide an antenna testing device to solve the technical problems existing in the prior art such as complex structure, long testing time, testing limitations and high manufacturing cost.

[0005] To achieve the above-mentioned object, the technical solution adopted by the present invention is an antenna testing device, comprising:

[0006] A first test template is provided with a test coupling piece; and

[0007] The second test template is used to carry a metal shell with an antenna. The second test template is movable to drive the metal shell to approach and move away from the test coupling piece. The test coupling piece is loosely matched with the antenna during testing.

[0008] In one embodiment, the metal shell has a front and a side, the front of the metal shell faces the first test template, the antenna is located on the side of the metal shell, and the test coupling piece faces the side of the metal shell during testing.

[0009] In one embodiment, the first test template is further provided with a test probe, and the test probe abuts against the front surface of the metal shell during testing.

[0010] In one embodiment, the first test template is provided with a limiting block protruding toward the second test template, and the height of the limiting block is greater than the thickness of the metal shell.

[0011] In one embodiment, a plurality of guide rods are provided on the first test template, and the guide rods are passed through the second test template. The second test template moves toward and away from the first test template along the length direction of the guide rods.

[0012] In one embodiment, the system further includes a lifting component connected to the second test template, wherein the lifting component drives the second test template to move.

[0013] In one embodiment, a positioning boss is provided on the side of the second test template facing the first test template, and the shape of the positioning boss matches the shape of the inner cavity of the metal shell.

[0014] In one embodiment, the metal shell has at least two adjacent antennas, and one test coupling plate covers at least two adjacent antennas during testing.

[0015] In one embodiment, the test coupling piece is a bent body, and the length direction of the bent body extends along the corner portion of the metal shell.

[0016] In one embodiment, it further comprises a terminal block for connecting to a network analyzer, wherein the terminal block is provided on the first test template and has a plurality of ports corresponding one-to-one to the test coupling pieces.

[0017] The beneficial effects of the antenna testing device provided by the present invention are:

[0018] First, a test coupling plate is provided on the first test template. By utilizing the coupled feeding principle of the antenna, the test coupling plate is used to replace the method of using multiple cylinders and test probes in the antenna performance test, thereby achieving the goal of testing the antenna performance without the test coupling plate being in contact with the metal shell. No additional cylinder is required to activate the test coupling plate, and the structure is simple. Secondly, since no additional cylinder is required to activate the test coupling plate, and the test coupling plate adopts a non-contact detection method, the test efficiency is improved. Thirdly, since no additional cylinder is required, the structure is simplified, thereby avoiding the inability to set corresponding test probes and cylinders when testing two antennas that are too close to each other, avoiding design limitations. Finally, based on the coupled feeding principle of the antenna, one test coupling plate can measure multiple antennas simultaneously, which saves the manufacturing cost of the antenna test equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 This is a three-dimensional structural diagram of an antenna testing device provided by an embodiment of the present invention from one perspective;

[0021] Figure 2 is a schematic diagram of a metal housing provided by an embodiment of the present invention;

[0022] Figure 3 This is a front view of an antenna testing device provided by an embodiment of the present invention;

[0023] Figure 4 This is a three-dimensional structural diagram from another perspective of the antenna testing device provided by an embodiment of the present invention.

[0024] The reference numerals in the figures are:

[0025] 1-first test template; 2-second test template; 21-positioning boss; 22-sensing component; 3-test coupling piece; 4-metal shell; 41-antenna; 5-limiting block; 6-guide rod; 7-lifting component; 8-terminal seat; 81-port; operating table 9. DETAILED DESCRIPTION

[0026] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] It should be noted that when an element is referred to as being “fixed to” or “disposed on” another element, it may be directly located on the other element or indirectly located on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0028] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate that the device or element must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be understood as a limitation on the present invention.

[0029] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating relative importance or the number of technical features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined. The following is a more detailed description of the specific implementation of the present invention in conjunction with specific embodiments:

[0030] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides an antenna testing device for testing a metal housing that utilizes a slit in a metal frame as an antenna. The antenna structure on the metal housing is tested using the antenna feeding principle (coupled feeding refers to the conduction of electrical energy between two circuit elements or circuit networks that are not in contact but are at a small distance in fields such as communications, such that one of the elements obtains energy without direct contact with the electrical energy conduction system). Specifically, the antenna structure is further described below: an antenna structure integrated into a metal housing includes a metal housing, a circuit substrate disposed in the metal housing, and an antenna radiating circuit disposed on the circuit substrate. The metal housing includes multiple side surfaces, one or more of which have a slit. One end of the antenna radiating circuit contacts the side surface having the slit and is adjacent to one end of the slit. The side surface that is not in contact with the antenna radiating circuit and is adjacent to the other end of the slit is grounded. It should be further explained that the above-mentioned metal housing can be the housing of a mobile terminal, such as a mobile phone or tablet computer.

[0031] The antenna testing equipment includes: a first test template 1 and a second test template 2; the first test template 1 is provided with a test coupling piece 3; the second test template 2 is used to support a metal shell 4 with an antenna 41. The second test template 2 can move to drive the metal shell 4 toward and away from the test coupling piece 3. The test coupling piece 3 is loosely matched with the antenna 41 during testing.

[0032] The specific working principle of the antenna testing device provided in this embodiment is as follows:

[0033] The metal shell 4 is installed on the side of the second test template 2 facing the first test template 1. The second test template 2 drives the metal shell 4 to move toward the first test template 1. When the metal shell 4 moves to a point where there is a small gap between it and the test coupling piece 3, electrical energy is conducted through coupling, so that the test coupling piece 3 obtains energy without direct contact with the metal shell 4. The energy can be displayed on the network analyzer. If the test coupling piece 3 obtains energy, the antenna 41 of the metal shell 4 passes the test. Otherwise, it is defective and needs to be scrapped or repaired.

[0034] The antenna testing device provided by this embodiment has the following beneficial effects:

[0035] First, a test coupling piece 3 is provided on the first test template 1. By utilizing the coupled feeding principle of the antenna 41, the test coupling piece 3 is used to replace the method of using multiple cylinders and test probes in the antenna performance test, so that the test coupling piece 3 can test the performance of the antenna 41 without contacting the metal shell 4, and no additional cylinder is required to start the test coupling piece 3, and its structure is simple; secondly, since no additional cylinder is required to start the test coupling piece 3, and the test coupling piece 3 adopts a non-contact detection, the test efficiency is improved; thirdly, since no additional cylinder is required, the structure is simplified, thereby avoiding the inability to set corresponding test probes and cylinders when testing two antennas 41 that are too close to each other, avoiding design limitations; finally, based on the coupled feeding principle of the antenna 41, one test coupling piece 3 can measure multiple antennas 41 at the same time, which saves the manufacturing cost of the antenna testing equipment.

[0036] In one embodiment, the metal housing 4 has a front and a side surface. The front surface of the metal housing 4 faces the first test template 1. The antenna 41 is located on the side surface of the metal housing 4. The test coupling piece 3 faces the side surface of the metal housing 4 during testing. It should be further explained that in the prior art, if the antenna 41 structure formed on the side surface of the metal housing 4 is to be tested, multiple test probes must be added to the side surface of the metal housing 4 and cylinders must be provided corresponding to the multiple test probes. However, the test coupling piece 3 of this embodiment does not need to contact the metal housing 4 during testing. Therefore, the test coupling piece 3 can be directly installed on the side surface of the metal housing 4, resulting in a simple structure and improved testing convenience.

[0037] In one embodiment, the first test template 1 is further provided with a test probe (not shown), which is pressed against the front surface of the metal housing 4 during testing. It will be appreciated that the antenna testing device of this embodiment can employ a combination of the test probe and the test coupling piece 3 for testing. When testing the front surface of the metal housing 4 (the larger surface of the metal housing 4 is the front surface, and the frame of the metal housing 4 is the side surface), the test probe can be used directly, while when testing the side surfaces of the metal housing 4, the test coupling piece 3 is used for testing. This combines the advantages of the test probe and the test coupling piece 3 to improve testing efficiency.

[0038] Specifically, the antenna test device includes multiple test coupling pieces 3, which enclose the test probes. The multiple test coupling pieces 3 correspond to multiple frame positions of the metal shell 4, and the test probes correspond to the main body of the metal shell 4.

[0039] In one embodiment, the first test template 1 is provided with a stopper 5 protruding toward the second test template 2. The height of the stopper 5 is greater than the thickness of the metal shell 4. It will be appreciated that the second test template 2 is designed to move toward the first test template 1. When the second test template 2 moves and abuts the stopper 5, the metal shell 4 precisely fits the test coupling piece 3. Therefore, the provision of the stopper 5 allows the second test template 2 to be quickly positioned in the testing position, thereby improving testing efficiency.

[0040] Optionally, there are two limit blocks 5, which are respectively provided at the diagonal positions of the first test template 1.

[0041] like Figure 3 As shown, in one embodiment, a plurality of guide rods 6 are provided on the first test template 1. The guide rods 6 are provided through the second test template 2. The second test template 2 moves toward and away from the first test template 1 along the length of the guide rods 6. It can be understood that by providing a plurality of guide rods 6 to guide the movement direction of the second test template 2, the second test template 2 can move stably, which can also improve testing efficiency.

[0042] In one embodiment, the apparatus further comprises a lifting assembly 7 connected to the second test template 2, and the lifting assembly 7 drives the second test template 2 to move. Specifically, the lifting assembly 7 is a lifting cylinder, which is used to drive the second test template 2 to move.

[0043] Furthermore, the antenna testing equipment also includes an operating table 9 for the user to input control information. The lifting assembly 7 is telescopically mounted on the operating table 9 , and the guide rod 6 is also mounted on the operating table 9 .

[0044] like Figure 4As shown, in one embodiment, the side of the second test template 2 facing the first test template 1 is provided with a positioning boss 21. The shape of the positioning boss 21 matches the shape of the inner cavity of the metal housing 4. It is important to further explain that the metal housing 4 has an inner cavity for accommodating electronic devices, such as the various electronic devices in a mobile phone. When testing the antenna 41, the metal housing 4 is inverted onto the positioning boss 21. The positioning boss 21 restricts the movement of the metal housing 4 and improves its stability during testing.

[0045] Furthermore, a sensing component 22 for sensing the metal shell 4 is provided on the positioning boss 21. The sensing component 22 is telescopically arranged on the positioning boss 21. When the metal shell 4 is placed on the positioning boss 21, the sensing component 22 retracts under the action of the gravity of the metal shell 4, outputs a sensing signal to the control component, and then drives the second test template 2 to move for testing.

[0046] Please refer again Figure 2 In one embodiment, the metal housing 4 has at least two adjacent antennas 41, and a test coupling plate 3 covers at least two adjacent antennas 41 during testing. It will be appreciated that because the test coupling plate 3 utilizes the coupled feeding principle to test the antennas 41 without requiring contact with the antennas 41, a single test coupling plate 3 can simultaneously measure at least two adjacent antennas 41. When the test coupling plate 3 is placed over the two antennas 41, as long as the energy obtained by the test coupling plate 3 does not exceed a threshold, it indicates that at least one of the two antennas 41 does not meet the standard, and the metal housing 4 has failed the test. This design can conserve test coupling plates 3, enabling one test coupling plate 3 to test multiple antennas 41, thereby reducing the manufacturing cost of antenna testing equipment.

[0047] Optionally, the test coupling piece 3 is a bent body, and the length direction of the bent body extends along the corner portion of the metal shell 4. It should be further explained that in this embodiment, two adjacent antennas 41 are respectively arranged on two sides of the corner portion of the metal shell 4. By designing the test coupling piece 3 as a bent body, it is possible to simultaneously test two adjacent antennas 41 at the corner portion using one test coupling piece 3, thereby improving testing efficiency.

[0048] like Figure 4As shown, in one embodiment, a terminal block 8 for connecting to a network analyzer is further included. The terminal block 8 is provided on the first test template 1 and has multiple ports 81. The test coupling piece 3 corresponds one-to-one with the ports 81. It can be understood that the test coupling piece 3 is connected to the network analyzer, and the performance of the antenna 41 of the metal shell 4 is judged by the consistency of the standing wave ratio of the network analyzer. A single coupling piece can be used between two adjacent antennas 41 to achieve consistency testing of the two antennas 41. In other words, instead of occupying two network analyzer ports 81, only one port 81 is needed to test the performance of the two antennas 41, greatly reducing the occupation of the ports 81 and thereby reducing the manufacturing cost of the antenna test equipment.

[0049] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. An antenna testing device, characterized in that: include: The first test template is provided with a test coupling piece; as well as a second test template, configured to support a metal housing having an antenna, the second test template being movable to move the metal housing toward and away from the test coupling piece, the test coupling piece being in clearance fit with the antenna during testing; A positioning boss is provided on the side of the second test template facing the first test template, and the shape of the positioning boss matches the shape of the inner cavity of the metal shell; wherein the metal shell has an inner cavity for accommodating an electronic device; The positioning boss is provided with a sensing component for sensing the metal shell. The sensing component is telescopically arranged on the positioning boss. When the metal shell is placed on the positioning boss, the sensing component retracts under the action of the gravity of the metal shell, outputs a sensing signal to the control component, and drives the second test template to move for testing.

2. The antenna testing device according to claim 1, wherein: The antenna is located on the side of the metal shell, and the test coupling piece is used to face the side of the metal shell during testing.

3. The antenna testing device according to claim 2, wherein: The first test template is further provided with a test probe, which abuts against the front of the metal shell during testing.

4. The antenna testing device according to claim 1, wherein: The first test template is provided with a limiting block protruding toward the second test template, and the height of the limiting block is greater than the thickness of the metal shell.

5. The antenna testing device according to claim 4, wherein: The first test template is provided with a plurality of guide rods, the guide rods are passed through the second test template, and the second test template moves toward and away from the first test template along the length direction of the guide rods.

6. The antenna testing device according to claim 5, wherein: It also includes a lifting component connected to the second test template, and the lifting component drives the second test template to move.

7. The antenna testing device according to claim 1, wherein: The metal shell has at least two adjacent antennas, and one test coupling piece is used to cover at least two adjacent antennas during testing.

8. The antenna testing device according to any one of claims 1 to 7, wherein: The test coupling piece is a bent body, and the length direction of the bent body extends along the corner portion of the metal shell.

9. The antenna testing device according to any one of claims 1 to 7, characterized in that: It also includes a terminal seat for connecting to a network analyzer, wherein the terminal seat is arranged on the first test template and has a plurality of ports corresponding one-to-one to the test coupling pieces.

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