Wave-absorbing metamaterial

Abstract

The invention discloses a wave-absorbing metamaterial, which comprises a plurality of stacked frequency selective surface (FSS) layers, and a reflecting plate located at the bottom of the bottom FSS layer along an electromagnetic wave incidence direction, wherein each FSS layer comprises a dielectric substrate and a dielectric loss layer. Frequency selection of an attenuating electromagnetic wave can also be achieved by virtue of FSSs while absorption and loss of the electromagnetic wave are achieved by designing the wave-absorbing metamaterial containing the FSSs; and furthermore, the electromagnetic wave transmitted to the bottom of the wave-absorbing metamaterial can return again to be absorbed by various FSSs by arranging the reflecting plate on the bottom FSS layer, thereby achieving a good broadband absorption effect.

Description

technical field [0001] The invention relates to the field of metamaterials, in particular to a wave-absorbing metamaterial. 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 weaken electromagnetic radiation—wav...

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Problems solved by technology

[0004] However, most of the existing wave-absorbing materials use the absorption properties of each material to absorb 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. , it is impossible to select the frequency for the attenuated electromagnetic wave, and the frequency band for absorbing electromagnetic waves is narrow. At the same time, the mechanical properties of this type of material are limited by the mechanical properties of the material itself, which cannot meet the needs of special occasions.

[0005] For the above-mentioned problems in related technologies, no effective solution has been proposed yet

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