Effective permittivity at the interface of dispersive dielectrics in FDTD

Author

Popovic, Dijana ; Okoniewski, Michal

Author_Institution

Electr. & Comput. Eng. Dept., Univ. of Calgary, Alta., Canada

Volume

13

Issue

7

fYear

2003

fDate

7/1/2003 12:00:00 AM

Firstpage

265

Lastpage

267

Abstract

A simple treatment of E-field component tangential to dispersive media interfaces in FDTD is introduced. The method uses concepts from the auxiliary differential equations method to average the constitutive parameters. The cases of a wave propagating in a coaxial line and of an open-ended coaxial line radiating into the dispersive media are investigated. Results show that the simulations could be significantly erroneous if the interface is not handled properly.

Keywords

coaxial cables; differential equations; dispersive media; electromagnetic wave propagation; finite difference time-domain analysis; permittivity; E-field component; FDTD method; auxiliary differential equations method; dispersive dielectrics; dispersive media interfaces; effective permittivity; open-ended coaxial line; radiating coaxial line; wave propagation; Coaxial components; Convolution; Dielectric materials; Differential equations; Dispersion; Finite difference methods; Optical polarization; Permittivity; Reflection; Time domain analysis;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2003.815183

Filename

1214544