Title :
The treatment of dispersive media by the FD-TD method
Author :
Kashiwa, T. ; Yoshida, N. ; Fukai, I.
Author_Institution :
Dept. of Electr. Eng., Hokkaido Univ., Sapporo, Japan
Abstract :
The formulation of the dielectric relaxation characteristics for a dispersive medium by the FDTD (finite-difference time-domain) method is described. The validity of the formulation is verified by comparing the calculated complex permittivity to analytical values. Dielectric relaxation is seen to be one of the dispersive phenomena. The same procedure, that is, the use of the equation of motion for an electric charge, can also be applied to the time-harmonic simulation of a more complex dispersive media such as plasma.<>
Keywords :
dielectric relaxation; difference equations; permittivity; time-domain analysis; FDTD method; complex permittivity; dielectric relaxation; dispersive media; electric charge; equation of motion; finite-difference time-domain; plasma; time-harmonic simulation; Convolution; Dielectrics; Difference equations; Dispersion; Frequency; Magnetic fields; Maxwell equations; Permeability; Permittivity; Polarization;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1990. AP-S. Merging Technologies for the 90's. Digest.
Conference_Location :
Dallas, TX, USA
DOI :
10.1109/APS.1990.115437
