Broadband resistive metamaterial and its broadband resistive metamaterial radome and antenna system

Abstract

The invention relates to a wideband-elimination metamaterial which comprises a metamaterial slice, the metamaterial slice comprises a media substrate and two structure layers which are attached to two opposite surfaces of the media substrate respectively, each structure layer comprises a plurality of regularly hexagonal metal micro-structures, the two metal micro-structures in the two structure layers, positioned at corresponding positions of the media substrate, form a pair, two adjacent sides of any two adjacent metal micro-structures in each structure layer are parallel to each other, so that the central interval of any two adjacent metal micro-structures is reduced, thus being capable of restraining electromagnetic wave in an ultrawide high frequency range so as to enable the metamaterials to have a wideband-elimination function; and the electromagnetic wave in low frequency range has the advantages of high wave transmittance and small reflection as well as good wave transmitting property. The invention further relates to a wideband-elimination metamaterial antenna housing and an antenna system which are produced by the wideband-elimination metamaterials.

Description

technical field [0001] The present invention relates to metamaterials and metamaterial radome and antenna system made therefrom, more specifically, relates to a novel design broadband bandstop metamaterial and broadband bandstop metamaterial radome and antenna made therefrom system. Background technique [0002] Metamaterials are artificial composite structural materials with extraordinary physical properties that natural materials do not have. Currently, people periodically arrange artificial microstructures with certain geometric shapes on the substrate to form metamaterials. Since the geometric shape, size and arrangement of the artificial microstructure can be used to change the permittivity and / or magnetic permeability of each point in the metamaterial space, so that it can produce the expected electromagnetic response to control the propagation of electromagnetic waves, therefore, in many This field has broad application prospects, and has become one of the hot field...

AI Technical Summary

Problems solved by technology

Although the radome made of these materials can protect the antenna from the influence of the harsh external environment, and the loss of the electromagnetic wave transmitted and / or received by the antenna is small, but since this radome is usually a bandpass radome, it is used When the ship radar system (its operating frequency is generally 3GHz), resonance will occur in certain frequency bands (such as X-band or higher frequencies), and many grating lobes will appear at high frequencies, making certain frequencies and incident angles The radar cross section (RadarCrossSection, RCS for short) increases, so that the radar non-system is easily exposed

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