Composite wave-absorbing material with wide frequency bands

A wave-absorbing material and broadband technology, applied in the field of frequency selective surface, can solve the problems of large volume, weight and cost, unstable wave-absorbing performance, difficulty in absorbing radar waves, etc., achieving simple structure, good wave-absorbing effect, Flexible selection of effects
CN103490171AInactive Publication Date: 2014-01-01XIDIAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
XIDIAN UNIV
Publication Date
2014-01-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a composite wave-absorbing material with wide frequency bands. The wave-absorbing material comprises a floor slab, dielectric slab, a frequency selection surface and a matrix wave-absorbing material layer, wherein the floor slab is arranged at the lower surface of the dielectric slab; the frequency selection surface is arranged on the upper surface of the dielectric slab; the matrix wave-absorbing material layer is applied onto the frequency selection surface; the frequency selection surface is provided with a plurality of passive resonance units; each passive resonance unit is in a Jerusalem cross hole-shaped structure; the plurality of passive resonance units are cyclically arranged to form the frequency selection surface with holes, and an RLC (Radio Link Control) parallel circuit is formed. The composite wave-absorbing material can achieve the reduction of radar cross sections within a wide frequency band range, and has the advantages of being simple in structure, excellent in stability and easy to realize.
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Description

technical field

[0001] The invention relates to the technical field of frequency-selective surfaces in wave-absorbing materials, in particular to a composite broadband wave-absorbing material for absorbing electromagnetic waves, reducing radar scattering cross sections, and realizing electromagnetic stealth of targets. Background technique

[0002] The research on electromagnetic stealth technology for the purpose of controlling target RCS has a long history. There are four main control methods for ordinary target RCS, namely: shaping technology, coating absorbing material, passive cancellation and active cancellation technology. Among them, shaping technology and coating absorbing material are the two most commonly used and most effective methods. Coating absorbing materials is the earliest application in the military field to realize the main means of stealth of weapon systems or their radars. With the rapid development of detection technology, stealth technology has beco...

Claims

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