Equivalence and optimization of absorbing boundary conditions

Author

Yuan, Weiliang ; Chu, Qinxi ; Liang, Changhong

Author_Institution

Dept. of Microwave Commun. Eng., Xidian Univ., Xi´´an, China

Volume

2

fYear

1998

fDate

2-5 Jun 1998

Firstpage

644

Abstract

Four types of absorbing boundary conditions (ABC) widely used in finite-difference time-domain (FDTD) simulations are discussed from the point of view of their equivalence. They include Mur´s (1981) ABC, dispersive ABC, Liao´s (1986) ABC and Higdon´s (1986) operator, and an analytical expression of Liao´s ABC is given. These ABCs are essentially equivalent and can be embodied by an analytical equation with variable factors. The absorbing performance of this equation is optimized through the appropriate choice of those factors

Keywords

electromagnetic field theory; electromagnetic wave absorption; finite difference time-domain analysis; optimisation; FDTD simulation; absorbing boundary conditions; analytical equation; computational electromagnetics; equivalence; finite-difference time-domain; optimization; Boundary conditions; Computational electromagnetics; Dispersion; Electromagnetic fields; Electromagnetic scattering; Finite difference methods; Microstrip; Microwave communication; Partial differential equations; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Mathematical Methods in Electromagnetic Theory, 1998. MMET 98. 1998 International Conference on

Conference_Location

Kharkov

Print_ISBN

0-7803-4360-3

Type

conf

DOI

10.1109/MMET.1998.709845

Filename

709845