Filtering antenna cover

Abstract

The invention provides a filtering antenna cover. The filtering antenna cover comprises a filtering assembly, wherein the filtering assembly comprises a dielectric layer and a superjunction structuralbody, the superjunction structural body is arranged on an inner surface or an outer surface of the dielectric layer, the superjunction structural body comprises a substrate, a plurality of first resonators and a plurality of second resonators, the substrate is provided with a first surface and a second surface which are opposite to each other, the plurality of first resonators are arranged on thefirst surface in an array way, each first resonator comprises a first resonant body microstructure, the plurality of second resonators are arranged on the second surface in an array way, each secondresonator comprises a second resonant body microstructure, and each second resonator and each first resonator are opposite to each other and are coupled to each other. By the filtering antenna cover,high-efficiency transmission of an electromagnetic wave in a working band and high-efficiency reflection of an electromagnetic wave outside the working band can be achieved, meanwhile, the filtering antenna cover is simple in structure and is easy to fabricate, and the fabrication cost is further reduced.

Description

technical field

[0001] The present disclosure relates to the field of radome technology, in particular to a filtering radome. Background technique

[0002] A metamaterial is an artificial composite structure or composite material with extraordinary physical properties that natural materials do not possess. Strictly speaking, a metamaterial is an artificial periodic structure whose unit scale is much smaller than the operating wavelength. Under long-wave conditions, it has an equivalent dielectric constant and an equivalent magnetic permeability. The electromagnetic parameters mainly depend on the properties of its basic constituent units. resonance characteristics. Therefore, by changing the geometric shape, size, and arrangement of the basic constituent units, the distribution of electromagnetic parameters in the metamaterial space can be changed, so that it can produce the expected electromagnetic response, and then flexibly control the propagation of electromagnetic wave...

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