Recent developments in QCRF-FDTD modeling of complex dispersive media

Author

Sang-Gyu Ha ; Kyung-Young Jung

Author_Institution

Dept. of Electron. Comput. & Eng., Hanyang Univ., Seoul, South Korea

fYear

2014

fDate

4-6 Aug. 2014

Firstpage

267

Lastpage

268

Abstract

We discuss recent developments in a finite-difference time domain (FDTD) algorithm for electromagnetic wave interaction with complex dispersive media, based on a quadratic complex rational function (QCRF). The QCRF is simple and accurate to consider frequency dispersive responses. Compared to the Debye, Drude, or Lorentz dispersion equation, the QCRF equation has more degrees of freedom and it is straightforward to implement update equations for QCRF-FDTD. We also discuss efficient memory storage of QCRF-FDTD by using a state-space approach.

Keywords

dispersive media; electromagnetic wave propagation; finite difference time-domain analysis; frequency response; rational functions; state-space methods; FDTD algorithm; Lorentz dispersion equation; QCRF-FDTD modeling; complex dispersive media; electromagnetic wave interaction; finite- difference time domain; frequency dispersive responses; quadratic complex rational function; state-space approach; Dispersion; Electromagnetic scattering; Equations; Finite difference methods; Mathematical model; Media; Time-domain analysis; FDTD; dispersion;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetics (iWEM), 2014 IEEE International Workshop on

Conference_Location

Sapporo

Type

conf

DOI

10.1109/iWEM.2014.6963739

Filename

6963739