Title :
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
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;
Conference_Titel :
Electromagnetic Compatibility, 2003 IEEE International Symposium on
Print_ISBN :
0-7803-7835-0
DOI :
10.1109/ISEMC.2003.1236729
