Fast Computation of the Dyadic Green´s Function for Layered Media via Interpolation

Author

Atkins, Phillip Russell ; Chew, Weng Cho

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Illinois at Urbana-Champaign, Urbana, IL, USA

Volume

9

fYear

2010

fDate

7/2/1905 12:00:00 AM

Firstpage

493

Lastpage

496

Abstract

The use of a dyadic layered-medium Green´s function as the kernel in a method of moments (MoM) modeling problem greatly reduces the complexity of modeling a stratified medium. Compared to the free-space Green´s function, there is an additional cost of having to compute a semi-infinite Sommerfeld integral for each call to calculate the dyadic layered-medium Green´s function. This letter discusses a method to tabulate and interpolate the Green´s function as a method of reducing the impedance matrix filling time. This method can be used in conjunction with existing methods for increasing the computational speed of the Green´s functions.

Keywords

Green´s function methods; computational electromagnetics; inhomogeneous media; interpolation; method of moments; computational electromagnetics; dyadic Green function; free-space Green function; impedance matrix filling time; layered media; method of moments; semi-infinite Sommerfeld integral; Galerkin method; Green´s function; inhomogeneous media; interpolation;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2010.2050130

Filename

5462838