FDTD analysis of printed circuit boards containing wideband Lorentzian dielectric dispersive media

Marina Y. Koledintseva*, David J. Pommerenke, James L. Drewniak

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review


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.

Original languageEnglish
Pages (from-to)830-833
Number of pages4
JournalIEEE International Symposium on Electromagnetic Compatibility
Publication statusPublished - 1 Jan 2002
Externally publishedYes
EventIEEE International Symposium on Electromagnetic Compatibility: EMC 2002 - Minneapolis, United States
Duration: 19 Aug 200223 Aug 2002


  • Debye model
  • Dispersive dielectric media
  • FDTD technique
  • Lorentzian model
  • Recursive convolution

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Cite this