Open AccessRealization of low-scattering metamaterial shell based on cylindrical wave expanding theory
Author(s) -
Xiaoyu Wu,
Chenggang Hu,
Min Wang,
Mingbo Pu,
Xiangang Luo
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.010396
Subject(s) - metamaterial , scattering , optics , cloak , metamaterial cloaking , permittivity , transformation optics , bandwidth (computing) , physics , electromagnetics , split ring resonator , microwave , cloaking , electromagnetic radiation , materials science , metamaterial absorber , tunable metamaterials , optoelectronics , computer science , dielectric , telecommunications , engineering physics , quantum mechanics
In this paper, we demonstrate the design of a low-scattering metamaterial shell with strong backward scattering reduction and a wide bandwidth at microwave frequencies. Low echo is achieved through cylindrical wave expanding theory, and such shell only contains one metamaterial layer with simultaneous low permittivity and permeability. Cut-wire structure is selected to realize the low electromagnetic (EM) parameters and low loss on the resonance brim region. The full-model simulations show good agreement with theoretical calculations, and illustrate that near -20dB reduction is achieved and the -10 dB bandwidth can reach up to 0.6 GHz. Compared with the cloak based on transformation electromagnetics, the design possesses advantage of simpler requirement of EM parameters and is much easier to be implemented when only backward scattering field is cared.