Electromagnetic dyadic Green´s function in spherically multilayered media

Author

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

Author_Institution

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

Volume

42

Issue

12

fYear

1994

fDate

12/1/1994 12:00:00 AM

Firstpage

2302

Lastpage

2310

Abstract

A spectral-domain dyadic Green´s function constructed for defining the electromagnetic fields in spherically multilayered media is considered by assuming that distribution and location of current sources are arbitrary. The scattering dyadic Green´s function in each layer is constructed in terms of the spherical vector wave functions by applying the method of scattering superposition. The coefficients of the scattering dyadic Green´s functions, based on the coupling recurrence equations satisfied by the coefficient matrix, are derived and expressed in terms of the equivalent reflection and transmission coefficients. The general solution has been applied to specific geometries, e,g., two-, three- and four-layered media that are frequently employed to model the practical problems, and the coefficients of the scattering dyadic Green´s functions are presented

Keywords

Green´s function methods; current distribution; electromagnetic wave scattering; spectral-domain analysis; coupling recurrence equations; current sources; electromagnetic dyadic Green´s function; equivalent reflection coefficients; equivalent transmission coefficients; scattering superposition; spectral domain; spherical vector wave functions; spherically multilayered media; Couplings; Current distribution; Electromagnetic fields; Electromagnetic radiation; Electromagnetic scattering; Equations; Geometry; Green´s function methods; Nonhomogeneous media; Solid modeling;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.339756

Filename

339756