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Ultrathin metallic resistance composite multi-frequency wave-absorbing material

A metal resistance and wave-absorbing material technology, applied in the field of wave-absorbing materials, can solve the problems of relatively thick thickness, narrow wave-absorbing bandwidth, single wave-absorbing frequency band, etc., and achieve the effect of easy processing, low thickness and high wave-absorbing efficiency

Active Publication Date: 2014-07-23
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problems of narrow absorbing bandwidth, single absorbing frequency band and thick relative thickness existing in the circuit analog absorbing structure in the prior art, and provide an ultra-thin metal resistance composite multi-frequency absorbing material

Method used

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  • Ultrathin metallic resistance composite multi-frequency wave-absorbing material
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Embodiment Construction

[0025] In order to further understand the present invention, the preferred embodiments of the present invention will be described below in conjunction with specific embodiments, but it should be understood that these descriptions are only for further illustrating the features and advantages of the present invention rather than limiting the claims of the present invention.

[0026] Such as figure 1 , the ultra-thin metal resistance composite multi-frequency absorbing material of the present invention includes a frequency selective surface 1 , a dielectric layer 2 and a metal bottom plate 3 . Wherein, the frequency selective surface 1 is composed of patch units 11 arranged periodically, and the patch unit 11 includes a square patch 111, a first square ring patch 112, a second square ring patch 113 and four identical L-shaped patches 114, the square patch 111, the first square ring patch 112 and the second square ring patch 113 are arranged in order according to the side length f...

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Abstract

The invention relates to an ultrahigh metallic resistance composite multi-frequency wave-absorbing material and belongs to the technical field of wave-absorbing materials. The technical problems that in the prior art, a circuit simulation wave-absorbing structure is narrow in wave-absorbing bandwidth, single in wave-absorbing frequency band and large in relative thickness are solved. The wave-absorbing material comprises a frequency selecting surface, a medium layer and a metal bottom plate. The frequency selecting surface is composed of patch units arrayed periodically, and each patch unit comprises a square patch, a first square surrounding patch and a second square surrounding patch, wherein the square patch, the first square surrounding patch and the second square surround patch are sequentially arrayed from inside to outside according to the length of sides. The wave-absorbing material further comprises four L-shaped patches which are symmetrically arranged outside four right angles of the second square surrounding patch. The double-frequency or triple frequency wave-absorbing characteristic that the reflection coefficient, below -10dB, of the wave-absorbing material is adjusted within the 4 GHz-18 GHz range can be achieved, the reflection coefficient of about -20 dB can be achieved nearby a wave-absorbing harmonic peak, and therefore a higher wave-absorbing effect is achieved.

Description

technical field [0001] The invention belongs to the technical field of wave-absorbing materials, and in particular relates to an ultra-thin metal resistance composite multi-frequency wave-absorbing material. Background technique [0002] Radar absorbing material is a multifunctional composite material, which has the advantages of strong pertinence, good absorbing performance, light weight, and mechanical properties that meet the load-bearing requirements. It has become an important development direction of contemporary stealth materials. Among them, the circuit analog absorbing material has the characteristics of high temperature resistance, light weight, heat and humidity resistance, and corrosion resistance, and is a widely used resonant radar absorbing material. [0003] The structure of the circuit simulation absorbing material is frequency selective surface (FSS), dielectric layer and metal base plate from top to bottom. The FSS is formed by periodic arrangement of patc...

Claims

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Application Information

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IPC IPC(8): H01Q17/00
Inventor 汤洋高劲松王岩松
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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