Novel two-dimensional/three-dimensional combined dual-polarization ultra-wideband wave absorbing structure

A dual-polarization, ultra-broadband technology, applied in the microwave field, can solve the problems of narrow absorbing frequency band, low density, light weight, etc., and achieve the effect of reducing design complexity, reducing design cost, and simple processing

Active Publication Date: 2019-03-22
HEFEI WISDOM DRAGON MACHINERY DESIGN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, ferrite absorbing material can still achieve a high absorbing rate at a very thin thickness, but it is difficult to achieve broadband absorbing and has a high density.
Carbon-based absorbing materials have low density and light weight, and can achieve an extremely wide absorbing frequency band, but their thickness is relatively large
The two-dimensional circuit analog absorbing structure is usually composed of a metal backplane and its front frequency selective surface and resistors. It has the advantage of light weight, but it has a large thickness and a narrow absorbing frequency band.

Method used

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  • Novel two-dimensional/three-dimensional combined dual-polarization ultra-wideband wave absorbing structure
  • Novel two-dimensional/three-dimensional combined dual-polarization ultra-wideband wave absorbing structure
  • Novel two-dimensional/three-dimensional combined dual-polarization ultra-wideband wave absorbing structure

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Embodiment Construction

[0036] The present invention is further analyzed below in conjunction with specific examples.

[0037] Such as figure 1 , figure 2 As shown, the new two-dimensional / three-dimensional combined dual-polarized ultra-broadband absorbing structure is a periodic structural unit vertically arranged along the z-axis (electromagnetic wave propagation direction), and each structural unit is seamlessly arranged and includes the first absorbing surface and the three-dimensional transmission line. structure, second absorbing surface and metal reflective surface;

[0038] Such as image 3 , Figure 4 As shown, the first wave-absorbing surface includes a first dielectric substrate 1 of Rogers5880 with a thickness of 0.254 mm, the first metal wire 2 is plated on the upper surface of the dielectric substrate 1, and the middle section of the second metal wire 4 is plated under the dielectric substrate 1 surface, other sections are plated on the upper surface of the dielectric substrate 1, ...

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Abstract

The invention relates to a novel two-dimensional / three-dimensional combined dual-polarization ultra-wideband wave absorbing structure. The structure is composed of a first absorbing surface, a secondabsorbing surface and a metal reflecting plate. A three-dimensional transmission line structure is loaded on the first wave absorbing surface. The combination of two two-dimensional absorbing surfacesand one three-dimensional transmission line structure skillfully constructs a head-to-tail multi-resonance, thus realizing wide-band dual-polarization absorbing (7.15 octaves). The wave absorbing structure provided by the invention has the advantages of thin thickness, light weight, low cost and easy design and processing.

Description

technical field [0001] The invention belongs to the field of microwave technology, and relates to a dual-polarization ultra-broadband wave-absorbing structure. Background technique [0002] Microwave absorber is a structure or material that can effectively absorb incident electromagnetic waves and greatly reduce the intensity of reflected electromagnetic waves. It has extensive and important applications in electromagnetic shielding, stealth technology and other fields. Generally speaking, the realization of microwave absorbers mainly includes two main realization methods: absorbing materials and electromagnetic absorbing structures. For example, ferrite absorbing materials can still achieve a high absorbing rate at a very thin thickness, but it is difficult to achieve broadband absorbing and has a high density. Carbon-based absorbing materials have low density and light weight, and can achieve an extremely wide absorbing frequency band, but their thickness is relatively la...

Claims

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Application Information

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IPC IPC(8): H01Q17/00H05K9/00
CPCH01Q17/008H05K9/0081
Inventor 俞钰峰罗国清俞伟良黄郅祺张晓红
Owner HEFEI WISDOM DRAGON MACHINERY DESIGN CO LTD
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