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Broadband wave-absorbing metamaterial and wave-absorbing device

A metamaterial and broadband technology, which is applied in the field of broadband absorbing metamaterials and absorbing devices, can solve problems such as complex design, inability to meet the broadband absorbing effect, and failure to meet

Active Publication Date: 2014-07-09
KUANG CHI INST OF ADVANCED TECH
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Problems solved by technology

[0003] The existing wave-absorbing materials make use of the absorption properties of each material for electromagnetic waves. By designing the components of different materials, the mixed materials have wave-absorbing properties. The design of such materials is complicated and does not have large-scale promotion. The mechanical properties of the material are limited by the mechanical properties of the material itself, which cannot meet the needs of special occasions
At the same time, this type of absorbing material has a single absorbing frequency point, which cannot meet the broadband absorbing effect.

Method used

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Embodiment Construction

[0021] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0022] Light, as a kind of electromagnetic wave, when it passes through glass, because the wavelength of light is much larger than the size of atoms, we can use the overall parameters of the glass, such as the refractive index, rather than the detailed parameters of the atoms that make up the glass to describe The response of glass to light. Correspondingly, when studying the response of materials to other electromagnetic waves, the response of any structure in the material whose scale is much smaller than the wavelength of the electromagnetic wave to electromagnetic waves can also be described by the overall parameters of the material, such as the dielectric constant ε and magnetic permeability μ. By designing the structure of each point of the material, the dielectric constant and magnetic permeability of each point of the material are the same or d...

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Abstract

The invention discloses a broadband wave-absorbing metamaterial which comprises a resistance layer, a first base material, multiple first artificial microstructures in array arrangement, a second base material, multiple second artificial microstructures in array arrangement and a third base material which are in sequential arrangement along the transmission direction of electromagnetic waves. The resistance layer is attached on the surface of the first base material, the first artificial microstructures are arranged in an array manner on any surface of opposite surfaces of the first base material and the second base material, the second artificial microstructures are arranged in an array manner on any surface of opposite surfaces of the second base material and the third base material, and vertical distance of the resistance layer and the undersurface of the third base material is one fourth of wavelength of an electromagnetic wave corresponding to a first wave-absorbing frequency point of the broadband wave-absorbing metamaterial. The broadband wave-absorbing metamaterial is designed by combing the metamaterial principle with the resistive screen wave-absorbing principle, and multi-layer base materials are arranged to realize broadband wave-absorbing effects. The invention further provides a wave-absorbing device which is attached with the broadband wave-absorbing metamaterial.

Description

technical field [0001] The invention relates to a wave-absorbing material, in particular to a broadband wave-absorbing metamaterial and a wave-absorbing device. Background technique [0002] With the rapid development of science and technology, there are more and more various technologies and products that use electromagnetic waves as the medium, and the impact of electromagnetic radiation on the environment is also increasing. For example, radio waves may cause interference to the airport environment, causing aircraft flights to fail to take off normally; mobile phones may interfere with the work of various precision electronic medical devices; even ordinary computers will radiate electromagnetic waves carrying information, which may It is received and reproduced kilometers away, resulting in the leakage of national defense, political, economic, technological and other intelligence. Therefore, controlling electromagnetic pollution and finding a material that can resist and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K9/00
Inventor 刘若鹏赵治亚寇超锋何嘉威
Owner KUANG CHI INST OF ADVANCED TECH
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