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

Volume

21

Issue

5

fYear

2011

fDate

5/1/2011 12:00:00 AM

Firstpage

225

Lastpage

227

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;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2011.2119296

Filename

5739553