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Wave-absorbing pyramid structure with low scattering property

A low-scattering and characteristic technology, which is applied in the field of low-scattering wave-absorbing pyramid structures, can solve problems such as insufficient low-scattering characteristics, and achieve the effect of reducing the decibel value of background noise and improving low-scattering characteristics.

Pending Publication Date: 2021-06-18
NANJING BOPING ELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a low-scattering characteristic wave-absorbing pyramid structure, aiming to solve the problem of insufficient low-scattering characteristics of existing pyramidal wave-absorbing materials

Method used

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  • Wave-absorbing pyramid structure with low scattering property
  • Wave-absorbing pyramid structure with low scattering property
  • Wave-absorbing pyramid structure with low scattering property

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: In this embodiment, the tip angle of the cone is 8°, the vertical distance between the first rhomboid surface and the tip of the cone is 700mm, and the area of ​​the second rhomboid surface is 1cm 2 , the ratio of the short and long diagonal lengths of the second rhombus is 0.8:1, and the area of ​​the first rhombus is 14cm 2 , the short and long diagonal length ratio of the first rhombus face is 0.8:1, the vertical distance between the second rhombus face and the cone tip is equal to the vertical distance between the first rhombus face and the cone tip The ratio is 0.3:1. At this time, the radar cross-sectional area of ​​the wave-absorbing single-cone material with this structure is -40dBsm.

Embodiment 2

[0021] Example 2: In this embodiment, the tip angle of the cone is 32°, the vertical distance between the first rhomboid surface and the tip of the cone is 550mm, and the area of ​​the second rhomboid surface is 120cm 2 , the ratio of the short and long diagonal lengths of the second rhombus is 0.6:1, and the area of ​​the first rhombus is 160cm 2 , the short and long diagonal length ratio of the first rhombus face is 0.6:1, the vertical distance between the second rhombus face and the cone tip is equal to the vertical distance between the first rhombus face and the cone tip The ratio is 0.5:1. At this time, the radar cross-sectional area of ​​the wave-absorbing single-cone material with this structure is -35dBsm.

Embodiment 3

[0022] Embodiment 3: In this embodiment, the tip angle of the cone is 16°, the vertical distance between the first rhomboid surface and the cone tip is 650mm, and the area of ​​the second rhomboid surface is 30cm 2 , the ratio of the short and long diagonal lengths of the second rhombus is 0.8:1, and the area of ​​the first rhombus is 40cm 2 , the short and long diagonal length ratio of the first rhombus face is 0.8:1, the vertical distance between the second rhombus face and the cone tip is equal to the vertical distance between the first rhombus face and the cone tip The ratio is 0.3:1. At this time, the radar cross-sectional area of ​​the wave-absorbing single-cone material with this structure is -40dBsm.

[0023] The following table is a table of structural parameters and calculation data of a low-scattering-angle cone wave-absorbing structure of the present invention:

[0024]

[0025] Working principle and application process of the present invention: After the prese...

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Abstract

The invention discloses a wave-absorbing pyramid structure with a low scattering property. The wave-absorbing pyramid structure comprises a pyramid bottom and a pyramid middle part, the pyramid bottom has a first rhombic surface; the pyramid middle part is provided with a second rhombic surface and a pyramid tip which are positioned on two sides of the pyramid middle part; the second rhombic surface is connected with one side, far away from the first rhombic surface, of the pyramid bottom; the cross section of the square bottom of a conventional pyramid wave-absorbing material is adjusted into the first rhombic surface, and the size of the first rhombic surface and the size of the second rhombic surface are adjusted through the cone middle part arranged on the pyramid bottom; and the vertical distance between the first rhombic surface and the second rhombic surface and the vertical distance between the second rhombic surface and the conical tip are adjusted, so that a better low-scattering characteristic can be obtained, and the decibel value of background noise of the darkroom can be further reduced.

Description

technical field [0001] The invention relates to the technical field of wave-absorbing pyramid structures, in particular to a wave-absorbing pyramid structure with low scattering characteristics. Background technique [0002] The compact field anechoic chamber is an anechoic chamber used to measure the low scattering properties of objects. There is an electromagnetic wave metal reflective surface inside the darkroom, which has the characteristics of short test distance. It is a measuring device for measuring the radar cross-sectional area of ​​the device under test. The size of the radar cross-sectional area is the stealth value. The calculated value of the radar cross-sectional area is obtained by subtracting the decibel value of the measured radar cross-sectional area of ​​the device from the decibel value of the background noise in the dark room. The lower the background noise decibel value of the anechoic room, the lower the radar cross-sectional area that the anechoic r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/40G01R29/08
CPCG01R29/0892G01S7/40
Inventor 胡益民李新涛郭涛刘文明樊迪刚
Owner NANJING BOPING ELECTRONICS TECH CO LTD