Implementation of the Theory of Characteristic Modes in MATLAB

Author

Capek, Miloslav ; Hamouz, P. ; Hazdra, Pavel ; Eichler, Jakub

Author_Institution

Dept. of Electromagn. Field, Czech Tech. Univ. in Prague, Prague, Czech Republic

Volume

55

Issue

2

fYear

2013

fDate

41365

Firstpage

176

Lastpage

189

Abstract

This paper describes the implementation of a complex MATLAB tool to calculate the characteristic modes and associated antenna parameters. The first code, written in FORTRAN, was presented in the early seventieths by Harrington and Mautz. Here, we utilize MATLAB, which is widely known and used in the antenna community these days. Because eigen-decomposition is time consuming, parallel and distributed computing is used. Thanks to the hundreds of built-in functions in MATLAB, computation of the surface currents from the eigenvectors obtained, as well as other important characteristics, are very easy and effective. The practical features are discussed with two examples.

Keywords

FORTRAN; antenna theory; computational electromagnetics; eigenvalues and eigenfunctions; electrical engineering computing; mathematics computing; FORTRAN; antenna community; associated antenna parameters; characteristic mode theory; complex Matlab tool; distributed computing; eigendecomposition; eigenvectors; parallel computing; surface currents; Computational electromagnetics; Eigenvalues and eigenfunctions; Electromagnetics; Impedance; MATLAB; Matrix decomposition; Resonant frequency; Surface impedance; Computational electromagnetics; MATLAB; eigenvalues and eigenfunctions; electromagnetic theory;

fLanguage

English

Journal_Title

Antennas and Propagation Magazine, IEEE

Publisher

ieee

ISSN

1045-9243

Type

jour

DOI

10.1109/MAP.2013.6529342

Filename

6529342