Design of double-negative ultrathin metamaterial absorber using array of electric field resonators

Abstract

This article presents a design of Double-Negative (DNG) Ultrathin Metamaterial absorber, composed of Electric field resonators. The proposed structure is of four-fold symmetrical and exhibits 99.59% absorption at 12.4 GHz frequency with FWHM (Full width at half maximum) bandwidth of 480 MHz. Double negative nature of absorber is explained with the real part of permeability and permittivity plots. The metamaterial nature of the absorber has been explained by using dispersion graph.