Three-dimensional metamaterial wave absorption body

Abstract

The invention discloses a three-dimensional metamaterial wave absorption body. The three-dimensional metamaterial wave absorption body comprises a reflection layer, a wave absorption layer and a plurality of metamaterial unit array layers, wherein the wave absorption layer is arranged above a surface of the top of the reflection layer, the plurality of metamaterial unit array layers are arranged on the wave absorption layer, contact edges of the plurality of metamaterial unit array layers and the wave absorption layer are arranged in parallel, each metamaterial unit array layer is divided intoa plurality of same metamaterial units, an artificial microstructure is attached onto a surface, facing the same direction, of each metamaterial unit. With the three-dimensional metamaterial wave absorption body disclosed by the technical scheme, the wave absorption material and the artificial microstructure form the three-dimensional metamaterial wave absorption body, a favorable wide-angle absorption effect is also achieved on the premise of achieving a favorable wide-frequency absorption effect, and the average wave absorption effect being 79.5% or above can be maintained within a 60-degree incident angle range.

Description

technical field [0001] The invention relates to the field of electromagnetic communication, in particular to a three-dimensional metamaterial absorber. Background technique [0002] The development of science and technology and the advancement of electronic technology have created a huge material civilization for human beings, but at the same time, electromagnetic waves of different frequencies and intensities generated by electronic equipment have also created electromagnetic pollution. In order to prevent the harm of electromagnetic pollution, using absorbing materials to absorb electromagnetic waves has become the most effective way to prevent and control electromagnetic pollution. At the same time, in the military field, with the development of detection technology, the use of absorbing materials to achieve target stealth in modern warfare is of great significance to improve the survival and penetration capabilities of weapon systems. The research of electromagnetic wav...

AI Technical Summary

Problems solved by technology

The current research on microwave-absorbing materials is still focused on conventional microwave-absorbing materials, and is generally based on exploratory application research, lacking theoretical guidance, so no substantial breakthroughs have been made, and traditional microwave-absorbing materials or microwave-absorbing The structure has the problem of a sharp decline in the effect of large angles, that is, the absorption effect for vertical incidence is very good, but the absorption effect for oblique incidence is sharply worse, which greatly limits the application of absorbing materials or absorbing structures.

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