Title :
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
fDate :
7/1/2003 12:00:00 AM
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;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2003.815183
