Title :
Scaling Factors of ID-FDTD Scheme for Dispersive Media Based on the Auxiliary Differential Equation (ADE) Method
Author :
Deng, Pingping ; Zhao, Meng ; Koh, Il-Suek
Author_Institution :
Grad. Sch. of Inf. Technol. & Telecommun., Inha Univ., Incheon, South Korea
fDate :
3/1/2011 12:00:00 AM
Abstract :
The isotropic-dispersion finite-difference time domain (ID-FDTD) scheme is modified for a dispersive medium. The proposed ID-FDTD scheme is based on the ADE method. In this correspondence, three typical dispersive media are considered: Debye, Drude, and Lorentz media, for which scaling factors are formulated. The dispersion property is then examined, and the accuracy of the proposed scheme is verified by consideration of two scattering problems.
Keywords :
computational electromagnetics; dispersive media; electromagnetic wave scattering; finite difference time-domain analysis; Debye media; Drude media; ID-FDTD; Lorentz media; auxiliary differential equation method; dispersive media; isotropic dispersion finite difference time-domain analysis; scattering problems; Dispersion; dispersive medium; finite-difference time domain (FDTD);
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2010.2103017
