Title :
ADE-FDTD Scattered-Field Formulation for Dispersive Materials
Author :
Kong, Soon-Cheol ; Simpson, Jamesina J. ; Backman, Vadim
Author_Institution :
Northwestern Univ., Evanston
Abstract :
This letter presents a scattered-field formulation for modeling dispersive media using the finite-difference time-domain (FDTD) method. Specifically, the auxiliary differential equation method is applied to Drude and Lorentz media for a scattered field FDTD model. The present technique can also be applied in a straightforward manner to Debye media. Excellent agreement is achieved between the FDTD-calculated and exact theoretical results for the reflection coefficient in half-space problems.
Keywords :
dispersive media; electromagnetic wave scattering; finite difference time-domain analysis; ADE-FDTD scattered-field formulation; Debye media; Drude media; Lorentz media; auxiliary differential equation method; dispersive materials; dispersive media; finite-difference time-domain method; half-space problem; reflection coefficient; Differential equations; Dispersion; Electromagnetic scattering; Finite difference methods; Light scattering; Optical reflection; Optical scattering; Polarization; Radar scattering; Time domain analysis; Auxillary differential equation (ADE) method; dispersive media; finite-difference time-domain (FDTD) method; scattered-field;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2007.911970
