Electromagnetic field radiated by a point source in an anisotropic layer

Author

Andronov, Ivan V. ; Sharkova, Nataliya M.

Author_Institution

St. Petersburg Univ., Russia

Volume

50

Issue

9

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

1203

Lastpage

1206

Abstract

The field of a point electromagnetic source localized in a homogeneous anisotropic coating of a perfect conductor is constructed by the Fourier method. The field in the anisotropic layer can be interpreted as a sum of ordinary and extraordinary waves (Felsen and Marcuvitz, 1973). The asymptotics of the electromagnetic field in the far zone is studied. Far from the surface, the main contribution is due to the outgoing spherical wave and near the coating the field is represented as the sum of waveguide modes contributions. Specific asymptotics appear in a vicinity of critical directions across which the number of waveguide modes changes.

Keywords

Fourier transforms; anisotropic media; antenna theory; electromagnetic wave propagation; waveguide theory; Fourier method; anisotropic layer; electromagnetic field; extraordinary waves; far zone; homogeneous anisotropic coating; ordinary waves; outgoing spherical wave; perfect conductor; point electromagnetic source; point source; waveguide modes; Anisotropic magnetoresistance; Coatings; Conductors; Differential equations; Electromagnetic fields; Electromagnetic radiation; Electromagnetic scattering; Electromagnetic waveguides; Maxwell equations; Tensile stress;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2002.802090

Filename

1048992