Implementation of 3D ID-FDTD scheme for lossless media

Author

Kim, Woo-Tae ; Koh, Il-Suek ; Lee, Yongshik ; Yook, Jong-Gwan

Author_Institution

Yonsei Univ., Seoul

fYear

2007

fDate

9-15 June 2007

Firstpage

3708

Lastpage

3711

Abstract

This paper implements the 3D isotropic dispersion (ID) FDTD with modified UPML and TF/SF boundary. To efficiently calculate the optimal weighting factor, an equation is formulated by using polynomial curve-fitting. From stability analysis, the 3D ID-FDTD extends the maximum time step by about 35% more than the standard FDTD, reducing the additional computation time due to increased complexity of the 3D ID-FDTD scheme. When applied to a scattering problem of a dielectric sphere, the ID-FDTD scheme generates more accurate results than that of the standard scheme, especially in the forward direction.

Keywords

curve fitting; dispersion (wave); electromagnetic wave scattering; finite difference time-domain analysis; polynomials; stability; 3D ID-FDTD scheme; 3D isotropic dispersion finite-difference time-domain method; dielectric sphere scattering problem; lossless media; optimal weighting factor; polynomial curve-fitting; stability analysis; Boundary conditions; Dielectrics; Dispersion; Finite difference methods; Information technology; Mie scattering; Permeability; Permittivity; Stability analysis; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 2007 IEEE

Conference_Location

Honolulu, HI

Print_ISBN

978-1-4244-0877-1

Electronic_ISBN

978-1-4244-0878-8

Type

conf

DOI

10.1109/APS.2007.4396344

Filename

4396344