Spatial interpolation of the moment matrix in electromagnetic scattering and radiation problems

Author

Nuteson, T.W. ; Naishadham, K. ; Mittra, R.

Author_Institution

Dept. of Electr. Eng., Wright State Univ., Dayton, OH, USA

fYear

1993

fDate

June 28 1993-July 2 1993

Firstpage

860

Abstract

In the analysis of antennas and scatterers of arbitrary shape by the method of moments (MoM), it is desirable to fill the matrix efficiently so that larger size problems can be solved. The authors describe an efficient MoM technique in which the matrix is filled by spatial interpolation of the matrix elements. Redundant calculations in the moment matrix are eliminated by utilizing various symmetries. The method is illustrated by application to planar problems including scattering from a square plate and radiation from a microstrip patch antenna. Computed results compare very well with those in the published literature. Using interpolation to fill the moment matrix has proven to be very efficient and produces negligible error in the computed current distribution.<>

Keywords

Green´s function methods; antenna theory; boundary integral equations; current distribution; electromagnetic wave scattering; interpolation; method of moments; microstrip antennas; current distribution; electromagnetic scattering; method of moments; microstrip patch antenna; moment matrix filling; planar problems; spatial interpolation; square plate; symmetries; Conductors; Electromagnetic radiation; Electromagnetic scattering; Filling; Interpolation; Message-oriented middleware; Moment methods; Symmetric matrices; Testing; Transmission line matrix methods;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1993. AP-S. Digest

Conference_Location

Ann Arbor, MI, USA

Print_ISBN

0-7803-1246-5

Type

conf

DOI

10.1109/APS.1993.385213

Filename

385213