Intelligent tool for testing flat phased-array antenna in darkroom
By designing an intelligent tool including a pitch adjustment bracket and an electronic pitch angle sensor, the problems of troubles in the adjustment and assembly of pitch angles and difficulty in darkroom reading in the prior art are solved, and flexible pitch adjustment and convenient angle reading of the antenna are realized, and testing efficiency and accuracy are improved.
Patent Information
- Application Number
- CN202421898636.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-08-07
AI Technical Summary
The existing flat-panel phased array antenna darkroom testing tooling lacks simple fixing devices when adjusting the pitch angle, which leads to trouble disassembly and assembly during testing, and the darkroom is insufficient light, making it difficult to read the pitch angle.
An intelligent tooling including a pitch adjustment bracket and an inclinometer is designed. The pitch adjustment bracket achieves pitch adjustment 0-90 degrees by rotating the pitch adjustment screw and front and rear moving rods, and a magnetically mounted electronic pitch angle sensor is provided on the antenna fixing rod, which has a backlight function.
It realizes simple fixation and flexible pitch adjustment of the antenna, which facilitates testing operation, and uses electronic pitch angle sensors to read easily in dark room environments, improving testing efficiency and accuracy.
Smart Images
Figure CN222927768U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of antenna test tooling, and particularly relates to an intelligent tooling for darkroom test of a planar phased array antenna. Background Technique
[0002] Satellite Internet is based on satellite communication technology to access the Internet and can provide high-bandwidth, flexible and convenient Internet access services for users worldwide. Specifically, in the construction of low-earth orbit satellite constellations and the development of planar phased array antennas, since the low-earth orbit satellite constellation consists of a constellation network of a large number of small satellites operating in the range of 300 to 2000 km of the earth's orbit, and each small satellite orbits the earth in about 2 hours, the ground receiving and transmitting antennas need to use low-cost planar electronically scanned phased array antennas to change the beam direction by electronic means rather than traditional mechanical rotation, so as to achieve fast and flexible beam scanning. The planar phased array antenna needs to pass through microwave anechoic chamber tests before development and production to measure its radiation characteristics, gain, directivity, isolation, frequency response and other parameters. The microwave anechoic chamber mainly consists of a test support and a scanning frame equipped with a probe. The planar phased array antenna needs to face the probe vertically and also has appropriate pitch angle adjustment and antenna azimuth adjustment. The light in the anechoic chamber is insufficient and an intelligent scale display is required. Moreover, the existing pitch angle adjustment tooling does not have a simple fixing device and is often fixed by screws during testing, which is troublesome to disassemble and assemble. Content of the Utility Model
[0003] The purpose of the utility model is to provide an intelligent tooling for darkroom test of a planar phased array antenna to solve the problems raised in the above background technique.
[0004] To achieve the above purpose, the utility model provides the following technical solution: an intelligent tooling for darkroom test of a planar phased array antenna, including a pitch adjustment bracket, a phased array antenna is arranged on the pitch adjustment bracket, and an inclinometer for measuring the tilt angle of the phased array antenna is also arranged on the pitch adjustment bracket;
[0005] The pitch adjustment bracket includes a pitch adjustment bracket frame. An antenna fixing rod is rotatably arranged on one side of the pitch adjustment bracket frame. A plurality of insertion rods for connecting a phased array antenna are arranged on the antenna fixing rod. The antenna fixing rod is further connected to a pitch support connecting rod. The pitch support connecting rod is connected to a front-back moving rod. The front-back moving rod is connected to a pitch adjustment lead screw. The front-back adjustment of the front-back moving rod is performed by rotating the pitch adjustment lead screw, and the pitch adjustment of the antenna fixing rod is performed by pushing and pulling the pitch support connecting rod. An activity long slot is formed on the side surface of the antenna fixing rod, and a narrow slot is arranged at one end of the activity long slot. An activity block is arranged inside the antenna fixing rod. The activity block is connected to an upper pressure plate through a connecting plate. One end of the upper pressure plate is connected to a side pressure plate. The bottom of the activity block is rotatably connected to a rotating ring. A clamping plate is arranged on one side of the rotating ring. A tension spring is connected to the bottom of the rotating ring. The tension spring pulls the rotating ring downward and pushes the rotating ring to rotate towards the side away from the narrow slot.
[0006] Preferably, a linear bearing slider is arranged on the front-back moving rod. A guiding optical axis passes through the linear bearing slider. Guiding optical axis fixing seats are arranged at both ends of the guiding optical axis. The guiding optical axis fixing seats are installed on the pitch adjustment bracket frame.
[0007] Preferably, both ends of the rotating pitch adjustment lead screw are arranged on screw bearing seats.
[0008] Preferably, one end of the rotating pitch adjustment lead screw is connected to a pitch adjustment hand crank.
[0009] Preferably, an antenna retraction state support rod is further arranged on the pitch adjustment bracket frame.
[0010] Preferably, a pitch adjustment bracket fixing bottom plate is arranged on the pitch adjustment bracket frame.
[0011] The technical effects and advantages of the present utility model: The bracket has a stepless manual pitch adjustment function of 0-90 degrees; for facilitating the display of the pitch angle, an electronic pitch angle sensor is magnetically attracted to the bracket. For facilitating the reading of the angle in a darkroom viewing environment, the angle sensor also has a backlight function;
[0012] Insertion rods and an antenna clamping mechanism are provided for simply fixing the antenna. It is convenient to use, and the antenna clamping mechanism is conveniently installed on the antenna fixing rod and is not easy to fall off. Description of the Drawings
[0013] Figure 1 Overall effect diagram of the phased array antenna installed on the bracket
[0014] Figure 2 Overall structure diagram of the pitch manual adjustment bracket
[0015] Figure 3 Horizontal state diagram of the phased array antenna test bracket
[0016] Figure 4 It is a vertical state diagram of the test support for the phased array antenna;
[0017] Figure 5 It is a schematic diagram of the installation structure of the antenna clamping mechanism of the present utility model;
[0018] Figure 6 It is a schematic diagram of the structure of the antenna clamping mechanism of the present utility model;
[0019] Figure 7 It is a schematic diagram of the structure of the movable long slot of the present utility model.
[0020] In the figure: 1, azimuth turntable column; 2, pitch adjustment bracket; 3, inclinometer; 4, phased array antenna; 20, antenna clamping mechanism; 21, fixed bottom plate of pitch adjustment bracket; 22, fixed nut of pitch adjustment bracket; 23, frame of pitch adjustment bracket; 24, pitch rotation shaft seat; 25, antenna fixing rod; 26, pitch support connecting rod; 27, front and rear moving rod; 28, linear bearing slider; 29, guiding optical axis; 210, guiding optical axis fixing seat; 211, pitch adjustment lead screw; 212, pitch adjustment hand crank; 213, lead screw bearing seat; 214, antenna recovery state support rod; 251, movable long slot; 201, upper pressure plate; 202, side pressure plate; 203, connecting plate; 204, movable block; 205, rotating ring; 206, clamping plate; 207, tension spring. Specific embodiments
[0021] The following further describes the specific embodiments of the present utility model with reference to the accompanying drawings. It should be noted here that the description of these embodiments is for helping to understand the present utility model, but does not constitute a limitation to the present utility model. In addition, the technical features involved in the following various embodiments of the present utility model can be combined with each other as long as they do not conflict with each other.
[0022] The present utility model provides an intelligent tooling for testing a flat phased array antenna in an anechoic chamber as shown in Figure 1 the figure, which includes a pitch adjustment bracket 2. A phased array antenna 4 is arranged on the pitch adjustment bracket 2. An inclinometer 3 for measuring the inclination of the phased array antenna 4 is also arranged on the pitch adjustment bracket 2. The inclinometer 3 has a backlight display function, which is convenient for reading in the anechoic chamber viewing environment, and the inclinometer 3 is installed on the antenna fixing rod 25 by a magnetic attraction method;
[0023] As shown in Figure 2As shown in the figure, the pitch adjustment bracket 2 includes a pitch adjustment bracket frame 23, which is an aluminum profile frame. At the upper left end of the pitch adjustment bracket frame 23, there is a pitch rotation shaft seat 24. The antenna fixing rod 25 is rotatably connected to the pitch rotation shaft seat 24 through a rotation shaft. There are two antenna fixing rods 25, and each antenna fixing rod 25 is provided with two insertion rods for connecting the phased array antenna 4. The antenna fixing rod 25 is also connected to the pitch support connecting rod 26, and the pitch support connecting rod 26 is connected to the front and rear moving rod 27. A linear bearing slider 28 is arranged on the front and rear moving rod 27, and a guiding optical axis 29 passes through the linear bearing slider 28. Both ends of the guiding optical axis 29 are provided with guiding optical axis fixing seats 210, and the guiding optical axis fixing seats 210 are installed on the pitch adjustment bracket frame 23. The middle of the front and rear moving rod 27 is screwed with a pitch adjustment screw rod 211. Both ends of the rotating pitch adjustment screw rod 211 are arranged on the screw rod bearing seats 213, and the screw rod bearing seats 213 are installed on the pitch adjustment bracket frame 23. The right end of the rotating pitch adjustment screw rod 211 is connected to the pitch adjustment hand crank 212. By rotating the pitch adjustment hand crank 212, the pitch adjustment screw rod 211 is driven to rotate to perform the front and rear adjustment of the front and rear moving rod 27, so as to push and pull the pitch support connecting rod 26 to perform the pitch adjustment of the antenna fixing rod 25;
[0024] As Figure 5 , Figure 6 and Figure 7 shown in the figure, on the side of the antenna fixing rod 25, there is an activity long opening 251, and one end of the activity long opening 251 is provided with a narrow opening. An antenna clamping mechanism 20 is arranged on the antenna fixing rod 25. The antenna clamping mechanism 20 includes a movable block 204, which is arranged inside the antenna fixing rod 25. The movable block 204 is connected to the upper pressing plate 201 through a connecting plate 203. One end of the upper pressing plate 201 is connected to the side pressing plate 202. The bottom of the movable block 204 is rotatably connected to a rotating ring 205. One side of the rotating ring 205 is provided with a clamping plate 206. The bottom of the rotating ring 205 is connected to a tension spring 207. The tension spring 207 pulls the rotating ring 205 downward and pushes the rotating ring 205 to rotate away from the narrow opening, so that after the movable block 204 is inserted into the inside of the antenna fixing rod 25, the tension spring 207 tightens the upper pressing plate 201 to fix the phased array antenna 4. At the same time, the tension spring 207 has a force to twist to the right, so that the rotating ring 205 rotates to the right, and the clamping plate 206 turns to the right side of the activity long opening 251. Since the narrow opening at the upper end of the activity long opening 251 is arranged on the left side, when the clamping plate 206 moves to the upper side, it is blocked, so that the whole movable block 204 is not easy to fall off from the inside of the antenna fixing rod 25; when it is necessary to disassemble the movable block 204, only need to manually push the clamping plate 206 to the left, and the clamping plate 206 can move along the narrow opening, so that the movable block 204 can be taken out.
[0025] Specifically, an antenna retraction state support rod 214 is also arranged on the pitch adjustment bracket frame 23.
[0026] Specifically, a pitch adjustment bracket fixing base plate 21 is provided on the pitch adjustment bracket frame 23, and the pitch adjustment bracket fixing base plate 21 is connected to the azimuth turntable column 1 through a pitch adjustment bracket fixing nut 22.
[0027] When the pitch adjustment hand crank 212 is rotated, the front and rear moving rod 27 moves back and forth as the pitch adjustment lead screw 211 rotates. Under the action of the pitch support connecting rod 26, the antenna fixing rod 25 is driven to rotate around the pitch rotating shaft seat 24, thereby realizing the function of pitch manual adjustment. At the same time, a digital display inclinometer is magnetically attracted below the antenna fixing rod 25, and the current pitch angle can be read out in real time.
[0028] This test bracket supports stepless adjustment from 0 to 90 degrees. When the test angle is 90 degrees, the state is as Figure 4 shown; when the test angle is 0 degree or the test is paused during recovery, the state is as Figure 3 shown. At this time, the whole antenna falls on the antenna recovery state support rod 214, ensuring the safety of the antenna.
[0029] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.
Claims
1. An intelligent tooling for darkroom testing of flat-panel phased array antennas, characterized in that: It comprises a pitch adjustment bracket (2), a phased array antenna (4) is arranged on the pitch adjustment bracket (2), and an inclinometer (3) for measuring the tilt adjustment of the phased array antenna (4) is also arranged on the pitch adjustment bracket (2); The pitch adjustment bracket (2) comprises a pitch adjustment bracket frame (23), one side of the pitch adjustment bracket frame (23) is rotatably provided with an antenna fixing rod (25), a plurality of plug rods for connecting the phased array antenna (4) are provided on the antenna fixing rod (25), the antenna fixing rod (25) is also connected to a pitch support connecting rod (26), the pitch support connecting rod (26) is connected to a front-rear moving rod (27), the front-rear moving rod (27) is connected to a pitch adjustment screw rod (211), the front-rear moving rod (27) is adjusted forward and backward by rotating the pitch adjustment screw rod (211), and the pitch of the antenna fixing rod (25) is adjusted by pushing and pulling the pitch support connecting rod (26); a movable long opening (251) is provided on the side of the antenna fixing rod (25), and A narrow opening is arranged at one end of the movable long opening (251); an antenna clamping mechanism (20) is arranged on the antenna fixing rod (25); the antenna clamping mechanism (20) comprises a movable block (204); the movable block (204) is arranged inside the antenna fixing rod (25); the movable block (204) is connected to an upper pressure plate (201) via a connecting plate (203); one end of the upper pressure plate (201) is connected to a side pressure plate (202); the bottom of the movable block (204) is rotatably connected to a rotating ring (205); a clamping plate (206) is arranged at one side of the rotating ring (205); a tension spring (207) is connected to the bottom of the rotating ring (205); the tension spring (207) pulls the rotating ring (205) downward and pushes the rotating ring (205) to rotate toward a side away from the narrow opening.
2. The intelligent tooling for darkroom testing of flat-panel phased array antennas according to claim 1, characterized in that: A linear bearing slider (28) is arranged on the forward and backward moving rod (27), a guide light axis (29) passes through the linear bearing slider (28), guide light axis fixing seats (210) are arranged at both ends of the guide light axis (29), and the guide light axis fixing seats (210) are installed on the pitch adjustment bracket frame (23).
3. The intelligent tooling for darkroom testing of flat-panel phased array antennas according to claim 1, characterized in that: Both ends of the rotary pitch adjustment screw rod (211) are arranged on a screw rod bearing seat (213).
4. The intelligent tooling for darkroom testing of flat-panel phased array antennas according to claim 1, characterized in that: One end of the rotating pitch adjustment screw rod (211) is connected to the pitch adjustment hand crank (212).
5. The intelligent tooling for darkroom testing of flat-panel phased array antennas according to claim 1, characterized in that: The pitch adjustment bracket frame (23) is also provided with an antenna recovery state support rod (214).
6. The intelligent tooling for darkroom testing of flat-panel phased array antennas according to claim 1, characterized in that: A pitch adjustment bracket fixing bottom plate (21) is arranged on the pitch adjustment bracket frame (23).