Device for testing standing wave consistency of multi-port antenna

Abstract

The utility model discloses a multiport antenna standing wave consistency test device, which comprises a test host, a microwave darkroom and a test tool, the test tool is arranged in the microwave darkroom, a multiport antenna to be tested is arranged on the test tool, the test tool comprises two cylinders, a pressing plate and a bottom plate, the number of the cylinders is two, the pressing plate is arranged on the bottom plate, and the bottom plate is arranged on the pressing plate. A pressing plate is horizontally arranged and fixedly mounted on output rods at the upper ends of the two air cylinders; compared with the prior art, the test tool is arranged in the microwave darkroom and is electrically connected with the test host, so that the standing wave test of the multi-port antenna to be tested can be completed, the test efficiency can be improved, the test cost can be reduced, the standing waves of a plurality of ports can be controlled to be tested at a time by using the test host, and the test efficiency is improved. Different characteristic curves are given according to the standing wave characteristics of each port, so that whether the standing waves of the ports meet the requirements or not is quickly and accurately judged, and the consistency of the standing waves of each batch of products is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of antenna testing, in particular to a device for testing the consistency of standing waves of multi-port antennas. Background Art

[0002] With the advent of the 5G era, the number of antenna ports is increasing, from the original 4-port and 8-port antenna modules to 64-port and 128-port antenna modules.

[0003] At present, due to the large number of ports in multi-port antenna modules, in order to meet the requirements of the back-end radiation pattern, and the different coupling strengths between units, the feeding network of each group of modules will have slight differences, resulting in very complicated judgment of the final standing wave test results. If the standard is too high, the production efficiency will be seriously reduced and the production cost will be increased, and unnecessary quality surplus will be given. If the standard is too low, the yield of the back-end whole machine will be very low and cannot meet normal production. As a result, the existing simple multi-port network analysis test can no longer meet the test requirements. For this reason, the utility model proposes a device for multi-port antenna standing wave consistency testing. Utility Model Content

[0004] The purpose of the present invention is to provide a device for testing the consistency of standing wave of a multi-port antenna, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a device for standing wave consistency testing of a multi-port antenna, comprising a test host, a microwave darkroom and a test tool, the test tool being installed in the microwave darkroom, and the multi-port antenna to be tested being installed on the test tool, the test tool comprising a cylinder, a pressure plate and a base plate, the number of the cylinders being two, the pressure plate being arranged horizontally and fixedly mounted on the upper end output rods of the two cylinders, the base plate being arranged horizontally and fixedly mounted in the middle of the two cylinders, the multi-port antenna to be tested being arranged on the upper surface of the base plate, the upper surface of the multi-port antenna to be tested being provided with a plurality of ports to be tested, the lower surface of the pressure plate being provided with a plurality of radio frequency connectors, and the lower end of the radio frequency connector being provided with an interface, when the output rod of the cylinder moves downward, the pressure plate moves downward to the upper surface of the multi-port antenna to be tested and the radio frequency connector is plugged into the port to be tested at the corresponding position, and each of the radio frequency connectors is electrically connected to the test host through the pressure plate and the test cable.

[0006] As a preferred technical solution of the present invention, the RF connector includes an SMA connector fixed on the lower surface of the pressure plate, a conductor shell is fixedly mounted on the SMA connector, a resilient outer conductor is movably mounted on the lower end of the conductor shell, an inner cavity is opened inside the resilient outer conductor, and a resilient inner conductor is movably mounted in the inner cavity.

[0007] As a preferred technical solution of the present invention, a second movable cavity is opened on the inner surface of the lower end of the SMA connector, the end of the elastic inner conductor is slidably mounted on the second movable cavity, and a second spring is connected between the elastic inner conductor and the SMA connector.

[0008] As a preferred technical solution of the present invention, a first movable cavity is opened on the inner surface of the conductor shell, the end of the elastic outer conductor is slidably installed in the first movable cavity, and a first spring is connected between the conductor shell and the elastic outer conductor.

[0009] As a preferred technical solution of the present invention, the test fixture further includes a support plate, and the support plate is fixedly mounted on the lower surface of the base plate.

[0010] As a preferred technical solution of the present invention, the test host includes a network analyzer and a high-frequency matrix switch, and the test cable is connected to the high-frequency matrix switch of the test host.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] The utility model discloses a device for testing the consistency of standing wave of multi-port antennas. By setting a test tool in a microwave darkroom and electrically connecting it to a test host, the standing wave test of the multi-port antenna to be tested can be completed. The test efficiency can be improved and the test cost can be reduced. In addition, the test host can be used to control the standing waves of multiple ports in one test. Different characteristic curves are given according to the standing wave characteristics of each port, so as to quickly and accurately determine whether the standing wave of the port meets the requirements, thereby ensuring the consistency of the standing wave of each batch of products.

[0013] Other features and advantages of the present invention will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is an exploded view of the test fixture of the present utility model;

[0016] Figure 3 This is a schematic structural diagram of the radio frequency connector of the present utility model;

[0017] In the figure: 1. Test host; 2. Microwave anechoic chamber; 3. Multi-port antenna to be tested; 30. Port to be tested; 4. Test tooling; 40. RF connector; 401. SMA connector; 402. Conductor shell; 403. Elastic outer conductor; 404. First spring; 405. Elastic inner conductor; 406. Inner cavity; 407. Second spring; 408. Second active cavity; 409. First active cavity; 410. Interface; 41. Cylinder; 42. Pressure plate; 43. Bottom plate; 44. Support plate; 5. Test cable. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0020] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0021] See also Figure 1-3In this embodiment, a device for a multi-port antenna standing wave consistency test is provided, comprising a test host 1, a microwave darkroom 2, and a test fixture 4. The test fixture 4 is installed in the microwave darkroom 2. The multi-port antenna 3 to be tested is installed on the test fixture 4. The test fixture 4 comprises a cylinder 41, a pressure plate 42, and a bottom plate 43. There are two cylinders 41. The pressure plate 42 is arranged horizontally and fixedly mounted on the upper output rods of the two cylinders 41. The bottom plate 43 is arranged horizontally and fixedly mounted in the middle of the two cylinders 41. The multi-port antenna to be tested is installed on the test fixture 4. The antenna 3 is arranged on the upper surface of the bottom plate 43, and the upper surface of the multi-port antenna 3 to be tested is provided with a plurality of ports 30 to be tested, and the lower surface of the pressure plate 42 is provided with a plurality of RF connectors 40, and the lower end of the RF connector 40 is provided with an interface 410. When the output rod of the cylinder 41 moves downward, the pressure plate 42 moves downward to the upper surface of the multi-port antenna 3 to be tested and the RF connector 40 is plugged into the port 30 to be tested at the corresponding position. Each RF connector 40 is electrically connected to the test host 1 through the pressure plate 42 and the test cable 5. The test host 1 includes a network analyzer and a high-frequency matrix switch, and the test cable 5 is connected to the high-frequency matrix switch of the test host 1. The model of the network analyzer is 5071C, and the model of the high-frequency matrix switch is CSM-0236LGN. The test host 1 uses the test software of wilon_ATE to perform the standing wave test of the antenna. Specifically, the implementation method of this embodiment is as follows: first, the test tool 4 is placed in a non-reflective microwave darkroom 2, and then the position of the test tool 4 is calibrated. Then, one end of the test cable 5 is connected to the radio frequency connector 40 of the pressure plate 42, and the other end is connected to the high-frequency matrix switch of the test host 1. The multi-port antenna 3 to be tested is placed on the bottom plate 43. The test system is controlled by the test software to execute the cylinder of the test tool 4, and the test data is recorded. The consistency test of the standing wave of the multi-port antenna can be completed. According to the different lines and positions of each port, the judgment curve standard of each port is formulated, so as to quickly and accurately determine whether the port standing wave meets the requirements, thereby ensuring the consistency of the standing wave of each batch of products.

[0022] The RF connector 40 includes an SMA connector 401 fixed to the lower surface of the pressure plate 42, a conductor housing 402 fixedly mounted on the SMA connector 401, a resilient outer conductor 403 movably mounted on the lower end of the conductor housing 402, an inner cavity 406 is provided inside the resilient outer conductor 403, a resilient inner conductor 405 is movably mounted in the inner cavity 406, a second resilient cavity 408 is provided on the inner surface of the lower end of the SMA connector 401, an end of the resilient inner conductor 405 is slidably mounted on the second resilient cavity 408, and a second spring 407 is connected between the resilient inner conductor 405 and the SMA connector 401, and a first resilient inner conductor 405 is provided on the inner surface of the conductor housing 402. The movable cavity 409, the end of the elastic outer conductor 403 is slidably installed in the first movable cavity 409, and a first spring 404 is connected between the conductor shell 402 and the elastic outer conductor 403. In this embodiment, in order to further improve the contact effect between the RF connector 40 and the antenna test port 30, by providing the first movable cavity 409, the second movable cavity 408, the first spring 404 and the second spring 407, the elastic outer conductor 403 and the elastic inner conductor 405 can be fully pressed against the inner and outer surfaces of the test port 30, respectively, thereby ensuring that the antenna can fully contact the RF connector 40, thereby improving the test accuracy and effect.

[0023] In this embodiment, the test fixture 4 further includes a support plate 44 , which is fixedly mounted on the lower surface of the base plate 43 . The support plate 44 can provide good support and improve stability during testing.

[0024] The utility model can complete the standing wave test of the multi-port antenna 3 to be tested by arranging the test tool 4 in the microwave darkroom 2 and electrically connecting it with the test host 1, which can not only improve the test efficiency and reduce the test cost, but also use the test host 1 to control the standing waves of multiple ports in one test, and provide different characteristic curves according to the standing wave characteristics of each port, so as to quickly and accurately determine whether the port standing wave meets the requirements, thereby ensuring the consistency of the standing wave of each batch of products.

[0025] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A device for multi-port antenna standing wave consistency testing, characterized in that: The invention comprises a test host (1), a microwave darkroom (2) and a test fixture (4), wherein the test fixture (4) is installed in the microwave darkroom (2), and a multi-port antenna (3) to be tested is installed on the test fixture (4), and the test fixture (4) comprises a cylinder (41), a pressure plate (42) and a bottom plate (43), wherein the number of the cylinders (41) is two, the pressure plate (42) is arranged horizontally and fixedly installed on the upper end output rods of the two cylinders (41), the bottom plate (43) is arranged horizontally and fixedly installed in the middle of the two cylinders (41), and the multi-port antenna (3) to be tested is arranged at the bottom. The upper surface of the plate (43) is provided with a plurality of ports (30) to be tested on the upper surface of the multi-port antenna (3) to be tested, and the lower surface of the pressing plate (42) is provided with a plurality of radio frequency connectors (40), and the lower ends of the radio frequency connectors (40) are provided with interfaces (410). When the output rod of the cylinder (41) moves downward, the pressing plate (42) moves downward to the upper surface of the multi-port antenna (3) to be tested and enables the radio frequency connectors (40) to be plugged into the ports (30) to be tested at corresponding positions. Each of the radio frequency connectors (40) is electrically connected to the test host (1) through the pressing plate (42) and the test cable (5).

2. The device for a multi-port antenna standing wave consistency test according to claim 1, wherein: The radio frequency connector (40) comprises an SMA connector (401) fixed on the lower surface of a pressure plate (42); a conductor housing (402) is fixedly mounted on the SMA connector (401); a resilient outer conductor (403) is movably mounted at the lower end of the conductor housing (402); an inner cavity (406) is provided inside the resilient outer conductor (403); and a resilient inner conductor (405) is movably mounted in the inner cavity (406).

3. The device for a multi-port antenna standing wave consistency test according to claim 2, wherein: A second movable cavity (408) is provided on the inner surface of the lower end of the SMA connector (401), the end of the elastic inner conductor (405) is slidably mounted on the second movable cavity (408), and a second spring (407) is connected between the elastic inner conductor (405) and the SMA connector (401).

4. The device for a multi-port antenna standing wave consistency test according to claim 3, wherein: A first movable cavity (409) is provided on the inner surface of the conductor housing (402), an end portion of the elastic outer conductor (403) is slidably mounted in the first movable cavity (409), and a first spring (404) is connected between the conductor housing (402) and the elastic outer conductor (403).

5. The device for a multi-port antenna standing wave consistency test according to claim 1, wherein: The testing fixture (4) further includes a support plate (44), and the support plate (44) is fixedly mounted on the lower surface of the base plate (43).

6. The device for a multi-port antenna standing wave consistency test according to claim 1, wherein: The test host (1) comprises a network analyzer and a high-frequency matrix switch, and the test cable (5) is connected to the high-frequency matrix switch of the test host (1).

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