Title :
A unified treatment of FDTD lattice truncation for dispersive media via periodic boundary conditions
Author :
Li, Dongying ; Sarris, Costas D.
Author_Institution :
Edward S. Rogers Sr. Dept. of Electr. & Comput. Eng., Univ. of Toronto, Toronto, ON, Canada
Abstract :
In this paper, we validate the aforementioned technique as a means for lattice truncation of different types of media. It is shown through two numerical examples that the method is applicable to both conductive and dispersive media, presenting numerical errors comparable to those of PMLs. Also, it maintains stable performance in cases where conventional absorbers fail to function satisfactorily.
Keywords :
dispersive media; electromagnetic waves; finite difference time-domain analysis; FDTD lattice truncation; PML; conductive media; dispersive media; finite difference time-domain analysis; numerical examples; perfectly matched layer; periodic boundary conditions; Boundary conditions; Computational modeling; Dispersion; Finite difference methods; Geometry; Lattices; Periodic structures; Reflection; Refractive index; Time domain analysis;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2009. APSURSI '09. IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
978-1-4244-3647-7
DOI :
10.1109/APS.2009.5171962
