Determination of Effective Constitutive Parameters of Inhomogeneous Metamaterials With Bianisotropy

作     者：Hasar, Ugur Cem Buldu, Gul Kaya, Yunus Ozturk, Gokhan 

作者机构：Gaziantep Univ Dept Elect & Elect Engn TR-27310 Gaziantep Turkey Munzur Univ Dept Elect & Elect Engn TR-62000 Tunceli Turkey Bayburt Univ Dept Elect & Energy TR-69000 Bayburt Turkey Ataturk Univ Dept Elect & Elect Engn TR-25240 Erzurum Turkey 

出 版 物：《IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES》 (IEEE微波理论与技术汇刊)

年 卷 期：2018年第66卷第8期

页      面：3734-3744页

核心收录：

学科分类：0808[工学-电气工程] 08[工学] 

基　　金：Scientific and Technological Research Council of Turkey [112R032] 

主　　题：Bianisotropic constitutive parameters inhomogeneous metamaterials (MMs) recursive algorithm retrieval 

摘      要：A recursive algorithm is proposed to accurately extract the electromagnetic parameters of isotropic/bianisotropic metamaterial (MM) slabs of inhomogeneous structures. The algorithm is based on the recursive calculations of measured/simulated forward and backward scattering (S-) parameters from previously extracted wave impedances and refractive indices of each homogeneous layer (except the analyzed intermediate layer) by a suitable retrieval method. There are two main advantages of our proposed method over existing extraction algorithms. First, it could retrieve the electromagnetic parameters of both isotropic and bianisotropic MM slabs. Second, it is applicable for electromagnetic parameter extraction of inhomogeneous structures. For validation of our method and assessing its accuracy over existing extraction methods, we used the simulation results of various inhomogeneous structures constructed by different isotropic/bianisotropic MM slabs (split-ring-resonator (SRR), SRR-wire, omega, and omega-wire). For completeness, the effects of noise present in S-parameters and iterative error (by increasing the value of iteration numbers) are examined to test the robustness of the proposed algorithm.