Reconstruction of the parameters of Debye and Lorentzian dispersive media using a genetic algorithm

Author

Zhang, Jianmin ; Koledintseva, Marina ; Antonini, Giulio ; Drewniak, James ; Rozanov, Konstantin ; Orlandi, Antonio

Author_Institution

Dept. of Electr. & Comput. Eng., Missouri Univ., Rolla, MO, USA

Volume

2

fYear

2003

fDate

18-22 Aug. 2003

Firstpage

898

Abstract

A method for reconstruction of the parameters of the Debye or Lorentzian dispersive media is proposed. In this method, S-parameters of a simple parallel-plate fixture filled with the dispersive medium are measured and modeled using the transmission line equations, provided a single TEM mode propagating in this parallel-plate waveguide. The genetic algorithm is used for searching the parameters of the dispersive medium by means of minimizing the discrepancy between the measured and modeled S-parameters. The results are verified using the full-wave FDTD modeling technique.

Keywords

S-parameters; dispersive media; electromagnetic wave propagation; finite difference time-domain analysis; genetic algorithms; transmission lines; Debye dispersive media; Lorentzian dispersive media; S-parameters; TEM mode propagation; finite difference time domain; full-wave FDTD modeling; genetic algorithm; parallel-plate fixture; parallel-plate waveguide; parameter reconstruction; parameter searching; transmission line equations; Dispersion; Equations; Finite difference methods; Frequency; Genetic algorithms; Magnetic materials; Permittivity; Scattering parameters; Time domain analysis; Transmission line measurements;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 2003 IEEE International Symposium on

Print_ISBN

0-7803-7835-0

Type

conf

DOI

10.1109/ISEMC.2003.1236728

Filename

1236728