FDTD modeling of isotropic dispersive magnetic materials

Author

Wu, Jing ; Koledintseva, Marina Y. ; Drewniak, James L. ; Pommerenke, David J.

Author_Institution

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

Volume

2

fYear

2003

fDate

18-22 Aug. 2003

Firstpage

904

Abstract

Numerical analysis using the finite-difference time-domain (FDTD) algorithm with a piecewise linear recursive convolution (PLRC) procedure for linear isotropic dispersive magnetic materials is presented. The frequency dependence of susceptibility used for this algorithm is represented in Debye, narrowband Lorentzian, and wideband Lorentzian forms, depending on the ratio of the resonance frequency and the resonance line width. Some numerical examples along with measurements are provided.

Keywords

dispersive media; ferrites; finite difference time-domain analysis; magnetic materials; nickel alloys; permeability; permittivity; piecewise linear techniques; Debye dispersion; Debye forms; FDTD modeling; Lorentzian dispersion; Ni-Zn ferrite; PLRC procedure; complex permeability; complex permittivity; dispersive magnetic materials; isotropic magnetic materials; narrowband Lorentzian forms; piecewise linear recursive convolution; resonance frequency; resonance line width; small perturbation theory; wideband Lorentzian forms; Convolution; Dispersion; Finite difference methods; Frequency dependence; Magnetic materials; Magnetic resonance; Narrowband; Numerical analysis; Piecewise linear techniques; Time domain analysis;

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.2003.1236729

Filename

1236729