Metamaterial radome with smoothing function and antenna

Abstract

The invention relates to a metamaterial radome with a smoothing function and an antenna. The metamaterial radome comprises at least one metamaterial piece layer, each metamaterial piece layer comprises a substrate and a plurality of artificial microstructures of the same size arranged on the substrate in an array mode, and each artificial microstructure is of a circular ring structure. Due to the fact that the artificial microstructures of specific shapes are adhered to the substrates, needed electromagnetic response is obtained, and the radome based on a metamaterial has the certain smoothing function. The relative dielectric constant, the refractive index, impedance and the smoothing frequency band of the material are changed through changing of the shape and the size of the artificial metal microstructures, and limit for the thickness of the material and a dielectric constant when a traditional radome is designed is reduced. As for a double-frequency-point antenna or a multi-frequency-point antenna, mutual interference among multiple frequency points can be reduced by the adoption of the radome, and normal operation of the frequency points is guaranteed. In addition, the radome is quite thin, the overall size of the antenna is reduced, the weight of the antenna is reduced, and meanwhile installation and maintenance are facilitated.

Description

technical field [0001] The present invention relates to radomes, and more particularly, to filtering metamaterial radomes and antennas. Background technique [0002] Metamaterials, commonly known as metamaterials, are a new type of synthetic material, which is composed of a substrate made of non-metallic materials and multiple artificial microstructures attached to the surface of the substrate or embedded in the interior of the substrate. The substrate can be virtually divided into multiple substrate units arranged in a rectangular array. Each substrate unit is attached with artificial microstructures to form a metamaterial unit. The entire metamaterial is composed of many such metamaterial units, just like Crystals are composed of countless crystal lattices arranged in a certain way. The artificial microstructures on each metamaterial unit may or may not be identical. Artificial microstructures are planar or three-dimensional structures with certain geometric figures comp...

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a metamaterial radome with filtering function and an antenna for the defects that the radome of the prior art cannot filter and reduce the frequency of the non-operating frequency band.

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