Title :
Analysis of periodic structures with dispersive material using the FDTD technique
Author :
ElMahgoub, Khaled ; Elsherbeni, Atef Z. ; Yang, Fan
Author_Institution :
Dept. of Electr. Eng., Univ. of Mississippi, Oxford, MS, USA
Abstract :
A dispersive periodic boundary condition (DPBC) is developed for the finite-difference time-domain method to analyze periodic structures with dispersive media on the boundaries of a unit cell. The formulation is based on the auxiliary differential equation (ADE) with two-term Debye model and the constant horizontal wavenumber approach. The developed formulation is easy to implement and is efficient in both memory usage and computational time. The validity of this formulation is verified through a numerical example of an infinite dispersive slab.
Keywords :
differential equations; dispersive media; finite difference time-domain analysis; optical materials; periodic structures; ADE; DPBC; FDTD technique; auxiliary differential equation; constant horizontal wavenumber approach; dispersive material; dispersive media; dispersive periodic boundary condition; finite-difference time-domain method; infinite dispersive slab; periodic structures; two-term Debye model; unit cell; Dispersion; Equations; Finite difference methods; Mathematical model; Periodic structures; Slabs; Time domain analysis;
Conference_Titel :
General Assembly and Scientific Symposium, 2011 XXXth URSI
Conference_Location :
Istanbul
Print_ISBN :
978-1-4244-5117-3
DOI :
10.1109/URSIGASS.2011.6050393
