Radiation by a straight thin-wire antenna embedded in an isotropic chiral medium

Author

Lakhtakia, Akhlesh ; Varadan, Vasundara V. ; Varadan, Vijay K.

Author_Institution

Dept. of Eng. Sci. & Mech., Pennsylvania State Univ., University Park, PA, USA

Volume

30

Issue

1

fYear

1988

fDate

2/1/1988 12:00:00 AM

Firstpage

84

Lastpage

87

Abstract

Radiation characteristics of a straight thin-wire antenna embedded in an isotropic chiral medium are explored. The radiation field contains both left-circularly polarized (LCP) and right-circularly polarized (RCP) components. The radiation pattern is found to be symmetric about the plane θ=π/2, azimuthally isotropic, and TEM (transverse electromagnetic) in nature; however, all three of these features are found as well for isotropic achiral media. Some specific features of the radiation field on certain constant spherical surfaces are also examined. If the antenna is reduced to a point dipole, it is shown that the radiation resistance is enhanced by the presence of chirality in the embedding medium, and the antenna LCP gain differs from the RCP gain

Keywords

antenna radiation patterns; dipole antennas; electromagnetic wave propagation; chirality; circularly polarised components; constant spherical surfaces; isotropic chiral medium; point dipole; radiation field; radiation pattern; radiation resistance; thin-wire antenna; transverse electromagnetic; Acoustic scattering; Acoustical engineering; Antenna radiation patterns; Dielectric materials; Dipole antennas; Electromagnetic scattering; Equations; Frequency; Optical polarization; Optical scattering;

fLanguage

English

Journal_Title

Electromagnetic Compatibility, IEEE Transactions on

Publisher

ieee

ISSN

0018-9375

Type

jour

DOI

10.1109/15.19895

Filename

19895