CN215813093U - Device suitable for testing planar near-field electrical performance of antenna housing - Google Patents
Device suitable for testing planar near-field electrical performance of antenna housing Download PDFInfo
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- CN215813093U CN215813093U CN202121772414.8U CN202121772414U CN215813093U CN 215813093 U CN215813093 U CN 215813093U CN 202121772414 U CN202121772414 U CN 202121772414U CN 215813093 U CN215813093 U CN 215813093U
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Abstract
The utility model belongs to the technical field of antenna housing electrical property testing, and discloses a device suitable for antenna housing plane near-field electrical property testing, which comprises a base, an antenna fixing device, an antenna housing fixing device and a wave absorbing device, wherein the base is a frame with a square structure, the antenna fixing device is fixedly connected with the antenna housing fixing device, and the back of the bottom of the antenna fixing device is arranged on the top edge of the base; the antenna fixing device is positioned and faces to enable the opening surface of the antenna housing to be perpendicular to the upper surface of the base, and the antenna surface faces to the direction of the probe; the wave absorbing device is arranged on one side of the base, which faces the probe, namely right below the antenna fixing device and the antenna housing fixing device. Compared with a far field antenna housing testing device, the testing device provided by the utility model has the advantages that a turntable device with higher precision requirement is removed, and the cost is obviously reduced; and the weight is greatly reduced, the mobility is good, and the disassembly and the assembly are convenient.
Description
Technical Field
The utility model belongs to the technical field of antenna housing electrical property testing, relates to a device for testing the electrical property of an antenna housing, and particularly relates to a device suitable for testing the planar near-field electrical property of the antenna housing.
Background
The existing far field antenna housing electrical property testing device is mostly composed of a position rotating shaft, a pitching rotating table, an antenna base, an antenna housing fixing device and the like, and the antenna housing are driven to move through the rotating shaft of the rotating table, so that electrical property detection is completed. A typical far-field radome electrical performance testing device is a large radar radome electrical performance testing multi-angle adjusting device such as CN 201910660725.6.
In the near-field electrical property test, the test method is fundamentally different from the far-field test, but at present, the relevant data of the antenna housing test device suitable for the near-field electrical property detection is less.
In plane near field antenna house electrical property detection, scanning probe is nearer with the distance of being surveyed the antenna, and nearest 3 ~ 5 wavelengths if adopt far field testing arrangement, the main problem has: a) the electromagnetic coupling effect of the probe, the turntable and other devices is obviously enhanced, and the coupling effect can obviously influence the accuracy of the test; b) during far-field testing, the rotary table is required to perform azimuth and pitching motion, the requirement on motion precision is accurate, the design complexity is high, and the cost of the rotary table is high; c) the far field test turntable is required to have good repeated positioning accuracy, so that the antenna housing test device is large in structure, difficult to move and poor in flexibility.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the utility model provides a device suitable for testing the planar near-field electrical property of the radome, which is specially used for detecting the near-field electrical property of the radome, reduces the electromagnetic coupling between a probe and the device, reduces the design of the freedom degree of movement of the device, and improves the mobility of the device.
The technical scheme of the utility model is as follows:
a device suitable for testing planar near-field electrical performance of an antenna housing comprises a base, an antenna fixing device, an antenna housing fixing device and a wave absorbing device, wherein the base is a square frame, the antenna fixing device is fixedly connected with the antenna housing fixing device, and the back of the bottom of the antenna fixing device is installed on the edge of the top of the base; the antenna fixing device is positioned and faces to enable the opening surface of the antenna housing to be perpendicular to the upper surface of the base, and the antenna surface faces to the direction of the probe; the wave absorbing device is arranged on one side of the base, which faces the probe, namely right below the antenna fixing device and the antenna housing fixing device.
Further, the antenna housing fixing device is a frame structure, and the upper edge and the lower edge of the antenna housing fixing device are inner profiles at an opening of the antenna housing; the lower part of the antenna housing fixing device is provided with a cavity, the antenna housing fixing device is connected with the antenna housing fixing device through a positioning structure on the cavity of the antenna housing fixing device, and the bottom of the antenna housing fixing device penetrates through the cavity to be connected with the base.
Furthermore, the antenna fixing device comprises an antenna mounting plate, a front-back adjusting screw, a polarization rotating device, a horizontal positioning device and a bottom bracket; the antenna mounting plate is connected with the polarization rotating device through the front and back adjusting screw rods in the horizontal direction, the polarization rotating device is installed above the horizontal positioning device, the horizontal positioning device is arranged above the bottom support, and the bottom support is connected with the base.
Furthermore, the front and back adjusting screw rod is of a screw rod structure, one end of the front and back adjusting screw rod is rotatably and horizontally and fixedly arranged on the antenna mounting plate, and the other end of the front and back adjusting screw rod is a threaded end and is in threaded connection with the polarization rotating device. The device just can drive the screw thread at polarization rotary device internal rotation through the end of the forward and backward adjustment screw rod on the rotatory antenna mounting panel to the horizontal relative distance of adjustment antenna mounting panel and polarization rotary device.
Further, polarization rotary device includes swivel mount, commentaries on classics head and bolt, and the commentaries on classics head is rotationally installed in the swivel mount, and the one end of turning the head is the handle, and to adjusting screw rod around the other end of turning the head is connected, and the commentaries on classics head passes through bolt restriction and the rotation of swivel mount, and the jack of bolt has two, two jack intervals 90. The polarization rotating device only needs two degrees of freedom which are respectively 0 degree and 90 degrees, so that the two jacks are separated by 90 degrees, the angle separation of two positioning positions of the rotary head is 90 degrees, and the polarization rotating requirement in detection is met.
Furthermore, the horizontal positioning device comprises a turntable, a supporting plate and an adjusting sheet, the polarization rotating device is arranged on the turntable, the turntable is rotatably arranged above the supporting plate, and the supporting plate is arranged on the bottom bracket; the adjusting sheet is a strip-shaped elastic long sheet, one end of the adjusting sheet is rotatably arranged on the upper surface of the circumferential part of the turntable through a bolt, the other end of the adjusting sheet is provided with a small hole, the supporting plate is provided with a plurality of small holes, and the bolt can penetrate through the small hole on the adjusting sheet and the small hole on the supporting plate to fix the positions of the small hole and the small hole. According to the structure, the horizontal angle of the antenna can be adjusted by rotating the turntable, and then the positioning of the turntable is realized in a mode that the bolt is matched with the adjusting sheet and the small hole of the supporting plate; several apertures indicate that several angles of orientation are possible.
Furthermore, a small hole is arranged on the supporting plate every 5 degrees.
The utility model has the advantages that:
1. compared with a far field antenna housing testing device, a rotary table device with higher precision requirement is removed, and the cost is obviously reduced;
2. the base of the frame structure greatly reduces the weight, has good mobility and is convenient to disassemble and assemble;
3. the overall structure except the base has the advantages that the other contours are within the range of the projection area of the antenna housing, the possibility of electromagnetic coupling with the probe is reduced, and the test precision is improved.
Drawings
FIG. 1 is a schematic view of the present invention;
FIG. 2 is a side view of the antenna fixture of the present invention;
FIG. 3 is a front view of the antenna fixture of the present invention;
FIG. 4 is a rear view of the antenna fixture of the present invention;
FIG. 5 is a three-dimensional view of the antenna fixture of the present invention;
the antenna comprises a base 1, an antenna fixing device 2, an antenna mounting plate 2-1, a forward and backward adjusting screw 2-2, a polarization rotating device 2-3, a horizontal positioning device 2-4, a bottom support 2-5, an antenna housing fixing device 3 and a wave absorbing device 4.
Detailed Description
This section is an example of the present invention and is provided to explain and illustrate the technical solutions of the present invention.
A device suitable for testing planar near-field electrical performance of an antenna housing comprises a base 1, an antenna fixing device 2, an antenna housing fixing device 3 and a wave absorbing device 4, wherein the base 1 is a square frame, the antenna fixing device 2 is fixedly connected with the antenna housing fixing device 3, and the back of the bottom of the antenna fixing device 2 is installed on the edge of the top of the base 1; wherein, the position and orientation of the antenna fixing device 2 make the opening surface of the antenna housing vertical to the upper surface of the base 1, and the antenna surface faces the direction of the probe; the wave absorbing device 4 is arranged on one side of the base 1 facing the probe, namely right below the antenna fixing device 2 and the antenna housing fixing device 3.
The antenna housing fixing device 3 is a frame structure, and the upper edge and the lower edge of the frame structure are inner profiles at an opening of the antenna housing; the lower part of the radome fixing device 3 is provided with a cavity, the radome fixing device 2 is connected with the radome fixing device 3 through a positioning structure on the cavity of the radome fixing device 3, and the bottom of the radome fixing device 2 penetrates through the cavity to be connected with the base 1.
The antenna fixing device 2 comprises an antenna mounting plate 2-1, a front-back adjusting screw 2-2, a polarization rotating device 2-3, a horizontal positioning device 2-4 and a bottom bracket 2-5; the antenna mounting plate 2-1 is connected with a polarization rotating device 2-3 through a front-back adjusting screw rod 2-2 in the horizontal direction, the polarization rotating device 2-3 is installed above a horizontal positioning device 2-4, the horizontal positioning device 2-4 is arranged above a bottom support 2-5, and the bottom support 2-5 is connected with the base 1.
The front and back adjusting screw 2-2 is a screw structure, one end of the front and back adjusting screw 2-2 is rotatably and horizontally and fixedly arranged on the antenna mounting plate 2-1, and the other end of the front and back adjusting screw 2-2 is a threaded end and is in threaded connection with the polarization rotating device 2-3. The device can drive the screw thread to rotate in the polarization rotating device 2-3 by rotating the end of the forward and backward adjusting screw rod 2-2 on the antenna mounting plate 2-1, thereby adjusting the horizontal relative distance between the antenna mounting plate 2-1 and the polarization rotating device 2-3.
The polarization rotating device 2-3 comprises a rotating seat, a rotating head and a bolt, the rotating head is rotatably arranged in the rotating seat, one end of the rotating head is a handle, the other end of the rotating head is connected with a front-back adjusting screw rod 2-2, the rotating head is limited by the bolt to rotate with the rotating seat, two jacks of the bolt are arranged, and the interval between the two jacks is 90 degrees. The polarization rotating device only needs two degrees of freedom which are respectively 0 degree and 90 degrees, so that the two jacks are separated by 90 degrees, the angle separation of two positioning positions of the rotary head is 90 degrees, and the polarization rotating requirement in detection is met.
The horizontal positioning device 2-4 comprises a turntable, a supporting plate and an adjusting sheet, the polarization rotating device 2-3 is arranged on the turntable, the turntable is rotatably arranged above the supporting plate, and the supporting plate is arranged on the bottom bracket 2-5; the adjusting sheet is a strip-shaped elastic long sheet, one end of the adjusting sheet is rotatably arranged on the upper surface of the circumferential part of the turntable through a bolt, the other end of the adjusting sheet is provided with a small hole, the supporting plate is provided with a plurality of small holes, and the bolt can penetrate through the small hole on the adjusting sheet and the small hole on the supporting plate to fix the positions of the small hole and the small hole. According to the structure, the horizontal angle of the antenna can be adjusted by rotating the turntable, and then the positioning of the turntable is realized in a mode that the bolt is matched with the adjusting sheet and the small hole of the supporting plate; several apertures indicate that several angles of orientation are possible.
The supporting plate is provided with a small hole every 5 degrees.
The utility model has the following further details:
the base 1 is a metal frame structure, and the wave absorbing device is adhered to one side of the base, which faces the probe.
The radome fixing device 3 is fixed with the horizontal positioning device 2-4 in a threaded connection mode, and is of a frame beam structure, the top beam surface, the bottom beam surface and the radome inner surface are shaped, positioning holes are formed, and the radome is positioned.
Claims (7)
1. The device is characterized by comprising a base (1), an antenna fixing device (2), an antenna housing fixing device (3) and a wave absorbing device (4), wherein the base (1) is a square frame, the antenna fixing device (2) is fixedly connected with the antenna housing fixing device (3), and the back of the bottom of the antenna fixing device (2) is installed on the edge of the top of the base (1); the antenna fixing device (2) is positioned and oriented to enable the opening surface of the antenna housing to be perpendicular to the upper surface of the base (1), and the antenna face faces the direction of the probe; the wave absorbing device (4) is arranged on one side, facing the probe, of the base (1), namely right below the antenna fixing device (2) and the antenna housing fixing device (3).
2. The device suitable for the planar near-field electrical property test of the radome of claim 1, wherein the radome fixing device (3) is a frame structure, and the upper edge and the lower edge of the frame structure are inner profiles at an opening of the radome; the lower part of the antenna housing fixing device (3) is provided with a cavity, the antenna housing fixing device (2) is connected with the antenna housing fixing device (3) through a positioning structure on the cavity of the antenna housing fixing device (3), and the bottom of the antenna housing fixing device (2) penetrates through the cavity to be connected with the base (1).
3. The device suitable for the planar near-field electrical property test of the antenna housing according to claim 1, wherein the antenna fixing device (2) comprises an antenna mounting plate (2-1), a forward and backward adjusting screw rod (2-2), a polarization rotating device (2-3), a horizontal positioning device (2-4) and a bottom bracket (2-5); the antenna mounting plate (2-1) is connected with the polarization rotating device (2-3) through a front-back adjusting screw rod (2-2) in the horizontal direction, the polarization rotating device (2-3) is installed above the horizontal positioning device (2-4), the horizontal positioning device (2-4) is arranged above the bottom support (2-5), and the bottom support (2-5) is connected with the base (1).
4. The device suitable for the planar near-field electrical property test of the radome according to claim 3, wherein the forward and backward adjusting screw (2-2) is of a screw structure, one end of the forward and backward adjusting screw (2-2) is rotatably and horizontally and fixedly arranged on the antenna mounting plate (2-1), and the other end of the forward and backward adjusting screw (2-2) is a threaded end and is in threaded connection with the polarization rotating device (2-3).
5. The device suitable for the planar near-field electrical property test of the radome of claim 3, wherein the polarization rotation device (2-3) comprises a rotary seat, a rotary head and a plug pin, the rotary head is rotatably arranged in the rotary seat, one end of the rotary head is a handle, the other end of the rotary head is connected with a forward and backward adjusting screw rod (2-2), the rotary head is limited by the plug pin to rotate with the rotary seat, and two plug pins are provided, and the two plug pins are spaced by 90 degrees.
6. The device suitable for the planar near-field electrical property test of the radome of claim 3, wherein the horizontal positioning device (2-4) comprises a turntable, a supporting plate and an adjusting plate, the polarization rotating device (2-3) is mounted on the turntable, the turntable is rotatably arranged above the supporting plate, and the supporting plate is mounted on the bottom bracket (2-5); the adjusting sheet is a strip-shaped elastic long sheet, one end of the adjusting sheet is rotatably arranged on the upper surface of the circumferential part of the turntable through a bolt, the other end of the adjusting sheet is provided with a small hole, the supporting plate is provided with a plurality of small holes, and the bolt can penetrate through the small hole on the adjusting sheet and the small hole on the supporting plate to fix the positions of the small hole and the small hole.
7. The device suitable for testing the planar near-field electrical performance of the radome of claim 6, wherein the support plate is provided with a small hole every 5 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121772414.8U CN215813093U (en) | 2021-07-30 | 2021-07-30 | Device suitable for testing planar near-field electrical performance of antenna housing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121772414.8U CN215813093U (en) | 2021-07-30 | 2021-07-30 | Device suitable for testing planar near-field electrical performance of antenna housing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215813093U true CN215813093U (en) | 2022-02-11 |
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ID=80127325
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121772414.8U Active CN215813093U (en) | 2021-07-30 | 2021-07-30 | Device suitable for testing planar near-field electrical performance of antenna housing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215813093U (en) |
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2021
- 2021-07-30 CN CN202121772414.8U patent/CN215813093U/en active Active
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