Accurate solution of the volume integral equation for high-permittivity scatterers

Author

Kottmann, Jorg P. ; Martin, Olivier J F

Author_Institution

Swiss Fed. Inst. of Technol., Zurich, Switzerland

Volume

48

Issue

11

fYear

2000

fDate

11/1/2000 12:00:00 AM

Firstpage

1719

Lastpage

1726

Abstract

We present a formalism based on the method of moment to solve the volume integral equation using tetrahedral (3-D) and triangular (2-D) elements. We introduce a regularization scheme to handle the strong singularity of the Green´s tensor. This regularization scheme is extended to neighboring elements, which dramatically improves the accuracy and the convergence of the technique. Scattering by high-permittivity scatterers, like semiconductors, can be accurately computed. Furthermore, plasmon-polariton resonances in dispersive materials can also be reproduced

Keywords

Green´s function methods; convergence of numerical methods; dispersive media; electromagnetic wave scattering; integral equations; method of moments; permittivity; plasmons; polaritons; resonance; 2D elements; 3D elements; Green´s tensor; accurate solution; convergence; dispersive materials; high-permittivity scatterers; method of moment; plasmon-polariton resonances; regularization scheme; semiconductors; singularity; tetrahedral elements; triangular elements; volume integral equation; Electromagnetic scattering; Finite element methods; Integral equations; Moment methods; Optical materials; Optical scattering; Particle scattering; Resonance; Semiconductor materials; Tensile stress;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/8.900229

Filename

900229