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Broadband absorbing metamaterials

A metamaterial and broadband technology, applied in the field of metamaterials, can solve the problem of narrow electromagnetic wave frequency band and achieve the effect of increasing bandwidth

Active Publication Date: 2018-05-22
KUANG CHI INST OF ADVANCED TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The existing wave-absorbing metamaterials have made great progress in absorbing electromagnetic waves of specific frequencies, but the frequency band of electromagnetic waves absorbed is usually very narrow

Method used

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Embodiment Construction

[0029] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0030] 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. The metamaterial comprises at least two basic unit layers, and each basic unit layer includes a base material and a plurality of microstructures periodically arranged on the base material. Each of the basic unit layers corresponds to a predetermined frequency point or a predetermined frequency band for absorbing electromagnetic waves, wherein the topological shapes and sizes of the plurality of microstructures on each basic unit layer are the same, and the microstructures on different basic unit layers The microstructures differ in topological shape and / or size. The invention also discloses an electronic device and a method for obtaining the broadband wave-absorbing supermaterial. Through the above method, the present invention enables the wave-absorbing metamaterial to significantly increase the wave-absorbing bandwidth on the basis of having a good absorbing effect on electromagnetic waves.

Description

technical field [0001] The invention relates to the technical field of metamaterials, in particular to a broadband absorbing metamaterial, electronic equipment and a method for obtaining a broadband absorbing metamaterial. Background technique [0002] With the rapid development of science and technology, there are more and more technologies and various 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 electr...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K9/00
Inventor 刘若鹏季春霖寇超锋何嘉威
Owner KUANG CHI INST OF ADVANCED TECH