Design of a novel AMC with little sensitivity to the angle of incidence and very compact size

Abstract

In this work, a basic cell shape (FSS shape) is first extracted from a 2D AMC structure designed by genetic algorithm (GA). The extracted FSS is a series-resonant grid (SRG) described analytically in C.R. Simovski et al., (2005). By applying the available analytical idea of C.R. Simovski et al. (2005), doing some parametric studies and using some innovation, a novel AMC with stable properties is obtained for wide range of incidence angles and with very compact size. During the process, one must be careful that the AMC bandwidth (BW) should not stray very much from acceptable limits. The FSS of the finalized AMC structure is a novel SRG that can be considered as a modified version of the well-known Jerusalem Cross (JC-FSS). For analysis of the structures, the Ansoff's Designer (AD) software, which is an electromagnetic solver based on the method of moments (MoM), is used