A Broadband Absorbing Material Based on Subwavelength Metallic Structure

A metal structure and wave absorbing material technology, applied in electrical components, magnetic field/electric field shielding, antennas, etc., can solve the problems of weak absorption, large quality, narrow absorption frequency band, etc., achieve strong absorption, simple production, increase wave absorption The effect of bandwidth
CN103715513BActive Publication Date: 2016-03-30INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI
Publication Date
2016-03-30

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Abstract

The invention discloses a broadband wave-absorbing material based on sub-wavelength metal structures, and belongs to the field of microwave absorbing materials. The broadband wave-absorbing material is divided into three layers from top to bottom, namely a first dielectric substrate, a traditional wave-absorbing material substrate and a second dielectric substrate, wherein the first dielectric substrate is covered with rectangular metal structures which are periodically arrayed; the second dielectric substrate is covered with periodically-arrayed metal structures shaped like a Chinese character 'Hui'. On the basis of a traditional wave-absorbing material, the periodic sub-wavelength metal structures are introduced; the electromagnetic wave loss effect of the traditional wave-absorbing material is improved according to the local electromagnetic wave control characteristics of the metal structures; broad bands can be strongly absorbed by virtue of double-layer metal structures. The broadband wave-absorbing material can be used for radar stealth, electromagnetic compatibility, electromagnetic shielding and the like.
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Description

technical field

[0001] The invention belongs to the design field of microwave absorbing materials, and specifically relates to the design of novel absorbing materials based on sub-wavelength metal structures. Background technique

[0002] Nowadays, people are developing and using electromagnetic waves more and more widely. Satellite communication, radar detection, mobile wireless, etc. all use electromagnetic waves as the medium for signal and energy transmission. However, electromagnetic radiation also has its negative effects. For example, the interference of electromagnetic waves will affect the quality of communication and deteriorate the performance of instruments and circuits; electromagnetic radiation will harm human health and affect the environment. deal with. In addition, in the field of national defense and military affairs, as a radar stealth technology to improve the survivability and penetration capabilities of weapon systems and avoid being discovered, identi...

Claims

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