Numerical Performances of Absorbing Boundary Conditions for ADI-FDTD Method

Author

Hwang, Jiunn-Nan ; Chen, Fu-Chiarng

Author_Institution

Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu

fYear

2006

fDate

9-14 July 2006

Firstpage

2723

Lastpage

2726

Abstract

In this paper, the numerical performances of the Mur´s first order and perfectly matched layer (PML) absorbing boundary conditions (ABCs) for the alternating direction implicit finite-difference time-domain (ADI-FDTD) method are presented. By taking the dispersion error of the ADI-FDTD method into account, it is shown that the two ABCs have almost the same level of accuracy with large time step. A microstrip lowpass filter is studied to compare the calculation accuracy and efficiency of these two ABCs. Our study shows that the Mur´s ABC for ADI-FDTD method with large time step is more practicable due to its simplicity and efficiency

Keywords

dispersion (wave); finite difference time-domain analysis; low-pass filters; ADI-FDTD method; absorbing boundary conditions; alternating direction implicit finite-difference time-domain method; dispersion error; microstrip lowpass filter; perfectly matched layer; Accuracy; Boundary conditions; Circuit simulation; Finite difference methods; Microstrip filters; Perfectly matched layers; Performance evaluation; Reflection; Tellurium; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium 2006, IEEE

Conference_Location

Albuquerque, NM

Print_ISBN

1-4244-0123-2

Type

conf

DOI

10.1109/APS.2006.1711166

Filename

1711166