Title :
FDTD analysis of printed circuit boards containing wideband Lorentzian dielectric dispersive media
Author :
Koledintseva, Marina Y. ; Pommerenke, David J. ; Drewniak, James L.
Author_Institution :
EMC Lab., Missouri Univ., Rolla, MO, USA
Abstract :
A Lorentzian model as the general case of a frequency-dependent behavior of a dispersive dielectric material is considered in this paper. Recursive convolution algorithms for the finite-difference time-domain (FDTD) technique for two cases of a Lorentzian medium, narrowband and wideband, depending on the ratio of a resonance line half-width at -3 dB and the resonance frequency of the material, are detailed. It is shown that a wideband Lorentzian model of a dielectric FR-4 used in printed circuit boards is more flexible and gives good agreement with experimental curves, and may be preferable as compared to a Debye model.
Keywords :
composite materials; dielectric materials; dispersive media; finite difference time-domain analysis; printed circuit testing; Debye model; FDTD technique; Lorentzian model; dielectric FR-4; dispersive dielectric media; finite-difference time-domain technique; printed circuit boards; recursive convolution; resonance frequency; resonance line half-width; wideband Lorentzian dielectric dispersive media; Circuit analysis; Convolution; Dielectric materials; Dispersion; Finite difference methods; Frequency; Printed circuits; Resonance; Time domain analysis; Wideband;
Conference_Titel :
Electromagnetic Compatibility, 2002. EMC 2002. IEEE International Symposium on
Conference_Location :
Minneapolis, MN, USA
Print_ISBN :
0-7803-7264-6
DOI :
10.1109/ISEMC.2002.1032703
