Convergence of FDTD and Wavelet-Collocation Modeling of Curved Dielectric Interface with the Effective Dielectric Constants Obtained by Static Field Analysis

Author

Fujii, Masafumi ; Lukashevich, Dzianis ; Sakagami, Iwata ; Russer, Peter

Author_Institution

Dept. of Electrical, Electronic and System Engineering, Toyama University, 3190 Gofuku, Toyama-shi, 930-8555 Japan. Phone/Fax: (+81-76)445 6762, email: mfujii@eng.toyama-u.ac.jp

fYear

2003

fDate

Oct. 2003

Firstpage

459

Lastpage

462

Abstract

The convergence of the effective dielectric constant (EDC) model of curved dielectric surfaces has been investigated precisely for the finite-difference time-domain (FDTD) as well as for the wavelet-collocation method based on interpolets. The EDCs are computed by solving the Laplace equation of static electric potential by a finite-difference (FD) method for the cells located on the interface of arbitrary dielectric media. The finite-difference solution of the Laplace equation provides accurate EDCs for arbitrary curved interface with even high contrast of the dielectric constants. It has been demonstrated that the precisely chosen ECDs allow both the FDTD and the wavelet-collocation methods to exhibit second-order convergence for the analysis of not only plane boundaries but also curved dielectric interfaces.

Keywords

Computer interfaces; Convergence; Dielectric constant; Electric potential; Finite difference methods; Frequency; Laplace equations; Time domain analysis; Transmission line matrix methods; Wavelet analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2003 33rd European

Conference_Location

Munich, Germany

Print_ISBN

1-58053-834-7

Type

conf

DOI

10.1109/EUMA.2003.340989

Filename

4143053