Title :
A Laguerre-FDTD Formulation for Frequency-Dependent Dispersive Materials
Author :
Ha, Myunghyun ; Swaminathan, Madhavan
Author_Institution :
Interconnect & Packaging Center, Georgia Inst. of Technol., Atlanta, GA, USA
fDate :
5/1/2011 12:00:00 AM
Abstract :
In this letter, Laguerre finite-difference time domain (FDTD) formulation for linear dispersive materials is proposed. Laguerre-FDTD is a time-domain method using Laguerre polynomials that ensures unconditional stability. Being free from Courant-Friedrich-Lewy (CFL) stability condition, Laguerre-FDTD is advantageous in the simulation of multiscale structures. The derived formulation has been implemented in 3-D and verified with a test structure containing frequency-dependent dispersive materials.
Keywords :
electromagnetic waves; finite difference time-domain analysis; polynomials; stability; Courant-Friedrich-Lewy stability condition; Laguerre finite-difference time domain formulation; Laguerre polynomials; Laguerre-FDTD formulation; electromagnetic waves; frequency-dependent dispersive materials; test structure; Dispersion; Finite difference methods; Materials; Polynomials; Time domain analysis; Time frequency analysis; Dispersive materials; Laguerre polynomials; Laguerre-FDTD; finite-difference time- domain (FDTD) method;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2011.2119296
