A spectral domain approach for the calculation of the scattering of the stratified uniaxial electric anisotropic media under point source excitation with arbitrary orientation

Subtitle:

Article type: Research Article

Authors: Xiang, Jintao^* | He, Siyuan | Zhang, Yunhua | Zhu, Guoqiang

Affiliations: School of Electronic Information, Wuhan University, Wuhan, Hubei, China

Correspondence: [*] Corresponding author: Jintao Xiang, School of Electronic Information, Wuhan University, Wuhan 430072, Hubei, China. E-mail: aokqi@hotmail.com

Abstract: A method for the calculation of the scattering of the stratified uniaxial electric anisotropic media (UEAM) under point source excitation with arbitrary orientation is presented. In this method, the total field is decomposed into three parts, the radiated field of the point source in free space, the reflected field from the top interface of the UEAM and the transmitted field after multiple reflections in the anisotropic layer. The three parts are derived in spectral domain respectively and can be expressed by using Fourier transform. Then the saddle point technique (SPT) is introduced to obtain an asymptotic solution of the scattered field. Results from the asymptotic solution are compared with the results calculated by the method of moments (MOM) and the comparison shows good agreement.

Keywords: Point source, scattering, uniaxial electric anisotropic, spectral domain method, saddle point technique

DOI: 10.3233/JAE-140145

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 48, no. 1, pp. 33-46, 2015