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.

Meeting Name

IEEE International Symposium on Electromagnetic Compatibility, 2003


Electrical and Computer Engineering

Keywords and Phrases

Debye Dispersion; Debye Forms; FDTD Modeling; Lorentzian Dispersion; Ni-Zn Ferrite; PLRC Procedure; Complex Permeability; Complex Permittivity; Dispersive Magnetic Materials; Dispersive Media; Ferrites; Finite Difference Time-Domain Analysis; Isotropic Magnetic Materials; Magnetic Materials; Narrowband Lorentzian Forms; Nickel Alloys; Permeability; Permittivity; Piecewise Linear Recursive Convolution; Piecewise Linear Techniques; Resonance Frequency; Resonance Line Width; Small Perturbation Theory; Wideband Lorentzian Forms

Document Type

Article - Conference proceedings

Document Version

Final Version

File Type





© 2003 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.