Title :
Drude dispersion in ADE FDTD revisited
Author :
Okoniewski, M. ; Okoniewska, E.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Calgary, Alta., Canada
fDate :
4/27/2006 12:00:00 AM
Abstract :
Studies of double negative materials and of metals at optical frequencies have lead to renewed interest in modelling of materials characterised by Drude or multi-pole Lorentz-Drude frequency dispersion. The auxiliary differential equation method of treatment of Drude dispersion in the finite difference time domain method is revisited, and a substantially more accurate formulation is derived.
Keywords :
computational electromagnetics; differential equations; dispersion (wave); dispersive media; finite difference time-domain analysis; metamaterials; Drude dispersion; FDTD; Lorentz-Drude frequency dispersion; auxiliary differential equation method; double negative materials; finite difference time domain method;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20060328
