Title :
3D crank-nicolson finite difference time domain method for dispersive media
Author :
Rouf, H.K. ; Costen, Fumie ; Garcia, S.G.
Author_Institution :
Sch. of Electr. & Electron. Eng., Univ. of Manchester, Manchester, UK
Abstract :
The unconditionally stable Crank-Nicolson finite difference time domain (CN-FDTD) method is extended to incorporate frequency-dependent media in three dimensions. A Gaussian-elimination-based direct sparse solver is used to deal with the large sparse matrix system arising from the formulation. Numerical results validate and confirm that the scheme is unconditionally stable for time steps over the Courant-Friedrich-Lewy limit of classical FDTD.
Keywords :
electromagnetic waves; finite difference time-domain analysis; matrix algebra; 3D Crank-Nicolson finite difference time domain method; Courant-Friedrich-Lewy limit; Gaussian-elimination-based direct sparse solver; dispersive media; frequency-dependent media; large sparse matrix system;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2009.1940
