Initial guess for the iterative search in method of moments in the scattering analysis of thin-strip arrays

Author

Ubeda, Eduard ; Martinez, Elena ; Rius, Juan M.

Author_Institution

Dept. of Signal Theor. & Commun., Univ. Politecnica de Catalunya, Barcelona, Spain

Volume

2B

fYear

2005

fDate

3-8 July 2005

Firstpage

121

Abstract

We present a novel and systematic procedure to define the initial guess in the iterative generalized minimal residual (GMRES) search for the electric current solution in the MoM scattering analysis of thin-strip arrays under normal incidence. We show for several thin-strip arrays that the number of steps and the computational time to converge decrease significantly with this new initial guess choice when compared with the conventional zero initial guess. This reduction becomes increasingly drastic as the electrical dimensions of the thin-strip array become larger.

Keywords

computational electromagnetics; electric current; electromagnetic wave scattering; iterative methods; method of moments; MoM scattering analysis; computational time; electric current solution; generalized minimal residual; iterative search; method of moments; thin-strip arrays; Current; Frequency; Integral equations; Iterative algorithms; Iterative methods; Matrix decomposition; Moment methods; Numerical analysis; Scattering; Signal analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2005 IEEE

Print_ISBN

0-7803-8883-6

Type

conf

DOI

10.1109/APS.2005.1551951

Filename

1551951