DocumentCode :
445201
Title :
Effects of chirality on the circular and linear polarized like and cross polarized reflection coefficients
Author :
Bahar, Ezekiel
Author_Institution :
Dept. of Electr. Eng., Nebraska Univ., Lincoln, NE, USA
Volume :
3B
fYear :
2005
fDate :
3-8 July 2005
Firstpage :
351
Abstract :
The principal equations dealing with electromagnetic propagation in chiral media are reviewed. The expression for the circular and linear like and cross polarized reflection coefficients at an interface between free space and chiral media are given. Electric and magnetic line sources are considered. Diffuse scattering due to surface roughness and lateral inhomogeneities of the chiral media is also considered. To provide a full wave (rigorous) basis for the analysis of general scattering problems, generalized Fourier transforms for irregular chiral media are used. They provide the interrelationships between the incident, reflected, transmitted, surface and laterally scattered waves at the interface between free space and the chiral media. A set of generalized telegraphists equations account for diffuse scattering in non specular directions, as well as coupling between the different species of the circularly polarized waves. Explicit expressions that relate the impact of chirality upon the like and cross polarized reflection coefficients are presented. It is shown that the contribution of chirality (to within first order) involves only the linear cross polarized reflection coefficients. These linear, cross polarized scattering coefficients impact primarily upon the off diagonal terms of the Mueller matrix (consistent with experimental observations). Physical interpretation of the analytical results is also presented.
Keywords :
Fourier transforms; chirality; electromagnetic wave polarisation; electromagnetic wave reflection; electromagnetic wave scattering; matrix algebra; rough surfaces; Mueller matrix; chirality; circular polarization; cross polarized reflection coefficients; diffuse scattering; electric line sources; electromagnetic propagation; generalized Fourier transforms; generalized telegraphists equations; irregular chiral media; lateral inhomogeneities; like polarized reflection coefficients; linear polarization; magnetic line sources; nonspecular directions; surface roughness; Electromagnetic propagation; Electromagnetic reflection; Electromagnetic scattering; Electromagnetic wave polarization; Equations; Fourier transforms; Magnetic analysis; Nonhomogeneous media; Rough surfaces; Surface roughness;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas and Propagation Society International Symposium, 2005 IEEE
Print_ISBN :
0-7803-8883-6
Type :
conf
DOI :
10.1109/APS.2005.1552513
Filename :
1552513
Link To Document :
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