Composite dielectric double-layer fss structure srr metal layer ultra-thin absorbing material

A composite medium and absorbing material technology, applied in the field of absorbing materials, can solve the problems of narrow absorbing bandwidth and thick relative thickness, and achieve the effect of easy processing, low thickness and reducing radar scattering cross section.

Active Publication Date: 2015-12-02
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 problems of the existing circuit analog absorbing structure such as narrow absorbing bandwidth and relatively thick thickness, and to provide a composite dielectric double-layer FSS structure SRR metal layer ultra-thin absorbing material

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  • Composite dielectric double-layer fss structure srr metal layer ultra-thin absorbing material
  • Composite dielectric double-layer fss structure srr metal layer ultra-thin absorbing material
  • Composite dielectric double-layer fss structure srr metal layer ultra-thin absorbing material

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Embodiment Construction

[0030] In order to make those skilled in the art further understand the present invention, below in conjunction with the attached Figure 1-5 The present invention will be further described.

[0031] Composite dielectric double-layer FSS structure SRR metal layer ultra-thin absorbing material includes first frequency selective surface resistance layer 1, first dielectric layer 2, second frequency selective surface resistance layer 3, second dielectric layer 4 and Metal reflective layer 5; wherein, the first frequency selective surface resistance layer 1 is made up of periodically arranged carbon film patch units, and the carbon film patch unit is composed of a cross-shaped patch 11, four identical square patches 12 and four The same L-shaped patch 13 is composed of four square patches 12 and four L-shaped patches 13 symmetrically distributed relative to the center point of the cross-shaped patch 11, that is, the cross-shaped patch 11 has four identical arms, adjacent There is...

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Abstract

The invention discloses a composite media double-layer FSS (Frequency Selective Surface) structure SRR (Split Ring Resonator) metal layer ultra-light and thin wave-absorbing material, belongs to the technical field of wave-absorbing materials, and solves the technical problems that the wave-absorbing bandwidth is narrow, and the relative thickness is thick in the existing circuit analogue wave-absorbing structure. The wave-absorbing material sequentially comprises a first FSS resistance layer, a first dielectric layer, a second FSS resistance layer, a second dielectric layer and a metal reflecting layer from top to bottom, wherein the first FSS resistance layer consists of periodically arrayed carbon film paster units; the second FSS resistance layer consists of periodically arrayed open pore units in carbon films; the metal reflecting layer consists of periodically arrayed open pore units in metal coating layers; the open pore units in the metal coating layers are in ring resonator structures. The reflection coefficient of the wave-absorbing material is below negative 10 dB in the range of 7.5 GHz-22 GHz, and five reflection coefficient peak values lower than negative 18 dB are formed in the whole wave-absorbing frequency band.

Description

technical field [0001] The invention belongs to the technical field of wave-absorbing materials, and in particular relates to an ultra-thin wave-absorbing material with a composite medium double-layer FSS structure SRR metal layer. 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 peri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q17/00
Inventor 汤洋高劲松王岩松徐念喜陈新
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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