Title :
Green dyadic and dipole fields for a medium with anisotropic chirality
Author :
Lindell, I.V. ; Weiglhofer, W.S.
Author_Institution :
Electromagn. Lab., Helsinki Univ. of Technol., Espoo, Finland
fDate :
6/1/1994 12:00:00 AM
Abstract :
A closed-form expression is derived for the Green dyadic corresponding to a reciprocal bianisotropic medium with isotropic permittivity and permeability and arbitrary anisotropic chirality. Such a medium can be approximated, for example, by inserting in an isotropic host medium an equal number of similar right- and left-handed metal helices with suitable orientations. The solution is applied to determine the electric field of an electric dipole embedded in such a medium. Evaluation of its far-field shows that the wave is split into two plane waves with different wave-normal directions
Keywords :
Green´s function methods; electromagnetic field theory; electromagnetic wave polarisation; electromagnetic wave propagation; magnetic permeability; permittivity; Green dyadic; anisotropic chirality; chiral media; closed-form expression; dipole fields; electric dipole; electric field; far-field; isotropic permeability; isotropic permittivity; left-handed metal helices; plane waves; reciprocal bianisotropic medium; right-handed metal helices;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings
DOI :
10.1049/ip-map:19941100
