ANALYSIS AND DESIGN OF AN ULTRA-THIN METAMATERIAL ABSORBER

作者：Ruifeng Huang, Zhengwen Li, Ling Bing Kong, Lie Liu, Serguei Matitsine · 发表于：Progress In Electromagnetics Research B · 年份：2009 · DOI：10.2528/pierb09040902 · 被引用次数：59 · 研究领域：Metamaterials and Metasurfaces Applications、Advanced Antenna and Metasurface Technologies、Antenna Design and Analysis

Abstract—This paper presents a class of ultra-thin metamaterial absorbers, which consists of periodic microstrip lines on top of a planar lossy substrate backed by a conducting metallic plate. A highly efficient full-wave analysis method was developed to solve the electromagnetic response of the absorbers. The influence of electromagnetic properties of the substrate and physical dimensions of the microstrip lines were analyzed. Genetic algorithm was used to optimize the absorption bandwidth of the absorbers. Effective permeability and permittivity of the absorbers were retrieved to shed a new light on the absorption mechanism of the absorbers and to explain their ultimate bandwidth limit. It was found that the ultimate bandwidth limit of the metamaterial absorbers is the same as that of normal absorbers. 1.