Multi-layer Thin and Ultra Wide-Bandwidth Microwave Absorbers

摘要

A thin ultra-wideband radio wave absorber having a multilayer structure is disclosed. The present invention relates to a dielectric substrate (GS); A conductor layer short-circuited by a conductor on the rear surface of the dielectric substrate; And a pattern layer formed by stacking multiple layers of a frequency selective surface (FSS), which is a conductor pattern formed of a periodic shape having a band pass or band stop characteristic selectively for a predetermined frequency band, on the dielectric substrate, Wherein the pattern layer is spaced apart from the dielectric substrate with a predetermined thickness, and the pattern layer is formed by stacking two or more FSSs spaced apart from each other by a predetermined thickness.