Determination of the effective constitutive parameters of bianisotropic metamaterials from reflection and transmission coefficients
Determination of the effective constitutive parameters of bianisotropic metamaterials from reflection and transmission coefficients
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DOI：
10.1103/physreve.79.026610
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发表时间：
2009-02-01
影响因子：
2.4
通讯作者：
Ozbay, Ekmel
中科院分区：
文献类型：
--
作者：
Li, Zhaofeng;Aydin, Koray;Ozbay, Ekmel
提出了一种由反射系数和透射系数（或散射参数）反演双各向异性材料平板有效本构参数的方法。在我们的检索方法中，只有在一个传播方向上的散射参数被使用。推导了解析反演方程，以反演双各向异性超材料的介电常数、磁导率和磁电耦合系数等有效参数。为了证明该方法的有效性，我们用它来检索四种不同的超材料的参数，其中两个是正常的介质没有双各向异性和其他两个是双各向异性介质。在使用我们的反演方法，包括双各向异性，正常介质和双各向异性介质之间的固有差异清楚地说明。我们的模拟和检索结果也证实了先前发表的文献的结论。
We propose a method to retrieve the effective constitutive parameters of a slab of bianisotropic metamaterial from reflection and transmission coefficients (or scattering parameters). In our retrieval method, only the scattering parameters in one propagation direction are used. Analytical inversion equations are derived in order to retrieve the effective parameters of the permittivity, permeability, and magnetoelectric coupling coefficient of the bianisotropic metamaterial. To demonstrate the validity of the method, we used it to retrieve the parameters of four different metamaterials, among which two were normal media without bianisotropy and the other two were bianisotropic media. In using our retrieval method, including bianisotropy, the intrinsic differences between a normal medium and a bianisotropic medium were illustrated clearly. Our simulation and retrieval results also corroborate the conclusions of the previously published literature.