A general expression of dyadic Green´s functions in radially multilayered chiral media

Author

Li, Le-Wei ; Kooi, Pang-Shyan ; Leong, Mook-Seng ; Yeo, Tat-Soon

Author_Institution

Dept. of Electr. Eng., Nat. Univ. of Singapore, Singapore

Volume

43

Issue

3

fYear

1995

fDate

3/1/1995 12:00:00 AM

Firstpage

232

Lastpage

238

Abstract

A general expression of spectral-domain dyadic Green´s function (DGF) is presented for defining the electromagnetic radiation fields in spherically arbitrary multilayered and chiral media. Without any loss of the generality, each of the radial multilayers could be the chiral layer with different permittivity, permeability, and chirality admittance, while both distribution and location of current sources are assumed to be arbitrary. The DGF is composed of the unbounded DGF and the scattering DGF, based on the method of scattering superposition. The scattering DGF in each layer is constructed in terms of the modified and normalized spherical vector wave functions. The coefficients of the scattering DGFs are derived and expressed in terms of the equivalent reflection and transmission coefficients, by applying boundary conditions satisfied by the coefficient matrices

Keywords

Green´s function methods; chirality; current distribution; electric admittance; electromagnetic fields; electromagnetic wave scattering; permeability; permittivity; spectral analysis; wave functions; boundary conditions; chiral layer; chirality admittance; coefficient matrices; coefficients; current sources; dyadic Green´s functions; electromagnetic radiation fields; permeability; permittivity; radially multilayered chiral media; reflection coefficients; scattering DGF; scattering superposition; spectral-domain; spherical vector wave functions; spherically multilayered chiral media; transmission coefficients; unbounded DGF; Admittance; Electromagnetic radiation; Electromagnetic scattering; Genetic expression; Green´s function methods; Nonhomogeneous media; Permeability; Permittivity; Reflection; Wave functions;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.371991

Filename

371991