Title :
Characterization of electromagnetic scattering by a plasma anisotropic spherical shell
Author :
Geng, You-Lin ; Wu, Xin-Bao ; Li, Le-Wei
Author_Institution :
Inst. of Antenna & Microwaves, Hangzhou Inst. of Electron. Eng., Zhejiang, China
Abstract :
Scattering of a plane wave by a plasma anisotropic spherical shell is considered in this paper and scattered fields are obtained in spherical coordinates. The electromagnetic fields in a plasma medium and in a free space are expanded in terms of the spherical vector wave functions (SVWFs) for a plasma anisotropic medium and the SVWFs in an isotropic medium. Numerical results for very general properties of the plasma dielectric material spherical shells are given. And those results obtained in a special case using the present method and the method integrating the method of moments (MoM) and the conjugate-gradient fast-Fourier-transform (CG-FFT) approach are compared, and a very good agreement is found. The results presented here can be used in antenna design, satellite communications channel design and characterization, and target shielding studies.
Keywords :
anisotropic media; conjugate gradient methods; electromagnetic wave scattering; fast Fourier transforms; method of moments; plasma electromagnetic wave propagation; CG-FFT; MoM; anisotropic medium; antenna design; conjugate-gradient fast-Fourier-transform; electromagnetic scattering; isotropic medium; method of moments; plane wave scattering; plasma anisotropic spherical shell; plasma dielectric material spherical shells; satellite communications channel design; spherical coordinate scattered fields; spherical vector wave functions; target shielding;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2004.830018