Physics-based preconditioner for iterative algorithms in MoM-problems

Author

Von Hagen, Jürgen ; Wiesbeck, Werner

Author_Institution

Inst. fur Hochstfrequenztechnik und Elektron., Karlsruhe Univ., Germany

Volume

50

Issue

9

fYear

2002

fDate

9/1/2002 12:00:00 AM

Firstpage

1315

Lastpage

1316

Abstract

An efficient method to solve electromagnetic scattering problems involving several metallic scatterers or bodies composed of dielectric and metallic regions is proposed. For this, the block Jacobi preconditioner is combined with the iterative transpose-free quasi-minimum residual (TFQMR) algorithm. For best performance, the blocks for the preconditioner are chosen according to individual scatterers or groups of scatterers, or according to the electric and magnetic current basis functions for dielectric/metallic scatterers.

Keywords

electromagnetic wave scattering; iterative methods; method of moments; MoM-problems; TFQMR algorithm; block Jacobi preconditioner; dielectric regions; dielectric scatterers; electric current basis functions; electromagnetic scattering; iterative algorithms; iterative transpose-free quasi-minimum residual algorithm; magnetic current basis functions; metallic regions; metallic scatterers; physics-based preconditioner; Dielectrics; Electromagnetic scattering; Integral equations; Iterative algorithms; Iterative methods; Jacobian matrices; Linear systems; Moment methods; Testing; Vectors;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2002.802100

Filename

1049006