Selective wave-transparent metamaterials and radomes

Abstract

The invention relates to a selective wave-transparent metamaterial and an antenna housing. The selective wave-transparent metamaterial comprises at least one metamaterial sheet layer, wherein each metamaterial sheet layer comprises at least one dielectric substrate and artificial metal microstructures arranged on the dielectric substrate. The dielectric substrate is virtually divided into a plurality of dielectric substrate units which are distributed in an array mode, a planimetric rectangular coordinate system is virtually built on the surface of each dielectric substrate unit, a first artificial metal microstructure attached to the dielectric substrate is arranged in each quadrant of each planimetric rectangular coordinate system, and a second artificial metal microstructure attached to the dielectric substrate is arranged on the coordinate axis of each planimetric rectangular coordinate system, wherein each first artificial metal microstructure is of a structure shaped like a Chinese character 'wang' or shaped like an inversed Chinese character 'wang' , and each second artificial metal microstructure is of a crossed-shaped structure. The selective wave-transparent metamaterial and the antenna housing can reduce reflection when incoming electromagnetic waves enter the metamaterial from air. In addition, frequency selection can be carried out on the selective wave-transparent metamaterial and the antenna housing, and corresponding transparent waves and corresponding filtering frequencies can be adjusted according to needs.

Description

technical field [0001] The invention relates to a material and a radome, more specifically, to a selectively transparent metamaterial and a radome. Background technique [0002] The radome is used to protect the antenna system from the influence of wind, rain, snow, sand and solar radiation, etc., so that the performance of the antenna system is relatively stable and reliable, while reducing the wear, corrosion and aging of the antenna system and prolonging the service life. For high-speed flying aircraft, the radome can also solve the problems caused by high temperature, aerodynamic load and other loads on the antenna. [0003] At present, the materials for preparing radome are mostly materials with low dielectric constant and loss tangent and high mechanical strength, such as glass fiber reinforced plastics, epoxy resin, high molecular polymer, etc., and the structure is mostly uniform single-wall structure, sandwich structure and space. skeleton structure etc. In the ra...

AI Technical Summary

Problems solved by technology

In the radome made of the above-mentioned existing materials, due to the design of the thickness of the hood wall, factors such as the working wavelength, radome size, shape, environmental conditions, and the electrical and structural performance of the materials used must be considered to ensure high transmission. Under the condition of high rate, it usually does not have the function of selective wave transmission, therefore, the antenna system is vulnerable to the interference of external electromagnetic waves

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