New Scaling Factors of 2-D Isotropic-Dispersion Finite Difference Time Domain (ID-FDTD) Algorithm for Lossy Media

Author

Koh, Il-Suek ; Kim, Hyun ; Yook, Jong-Gwan

Author_Institution

Inha Univ., Incheon

Volume

56

Issue

2

fYear

2008

Firstpage

613

Lastpage

617

Abstract

We modify the 2D explicit isotropic-dispersion finite-difference time-domain (ID-FDTD) scheme originally proposed for lossless media , which can drastically improve the accuracy of the 2-D ID-FDTD scheme for lossy media. The proposed scheme adopts new scaling factors for material properties such as the permittivity, permeability and conductivity. The new scaling factors can generate nearly the exact phase velocity and attenuation factor of a lossy medium for a single frequency. For the validation of the proposed scheme, two scattering problems are considered.

Keywords

absorbing media; computational electromagnetics; finite difference time-domain analysis; 2D isotropic-dispersion finite difference time domain algorithm; attenuation factor; conductivity; lossless media; lossy media; material properties; permeability; permittivity; scaling factors; Attenuation; Conductivity; Finite difference methods; Frequency; Material properties; Permeability; Permittivity; Scattering; Time domain analysis; Two dimensional displays; Finite-difference time-domain (ID-FDTD) methods; numerical analysis; numerical dispersion;

fLanguage

English

Journal_Title

Antennas and Propagation, IEEE Transactions on

Publisher

ieee

ISSN

0018-926X

Type

jour

DOI

10.1109/TAP.2007.915481

Filename

4447356