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.
| Original language | English |
|---|---|
| Pages (from-to) | 830-833 |
| Number of pages | 4 |
| Journal | IEEE International Symposium on Electromagnetic Compatibility |
| Volume | 2 |
| Publication status | Published - 1 Jan 2002 |
| Externally published | Yes |
| Event | IEEE International Symposium on Electromagnetic Compatibility: EMC 2002 - Minneapolis, United States Duration: 19 Aug 2002 → 23 Aug 2002 |
Keywords
- Debye model
- Dispersive dielectric media
- FDTD technique
- Lorentzian model
- Recursive convolution
ASJC Scopus subject areas
- Condensed Matter Physics
- Electrical and Electronic Engineering