DocumentCode :
1071735
Title :
Generalized Z-domain absorbing boundary conditions for the analysis of electromagnetic problems with finite-difference time-domain method
Author :
Shao, ZhenHai ; Hong, Wei ; Zhou, Jianyi
Author_Institution :
Dept. of Radio Eng., Southeast Univ., Nanjing, China
Volume :
51
Issue :
1
fYear :
2003
fDate :
1/1/2003 12:00:00 AM
Firstpage :
82
Lastpage :
90
Abstract :
In this paper, a generalized absorbing boundary condition (Z-ABCs) is constructed in the Z-transform domain. Based on Z-ABCs, some well-known ABCs, such as the Mur´s ABC, the dispersive boundary condition, Zhao and Litva´s ABC, Liao´s ABC, etc. can be easily deduced. Besides, it can also result in some new ABCs. Recurrence formulas for the coefficients of Z-ABCs are presented, and the stability and numerical dispersive characteristics are discussed in detail. In order to validate the Z-ABCs, the finite-difference time-domain method is applied to the analysis of transmission lines, integrated filters, patch antennas, and scattering problems.
Keywords :
Z transforms; antenna theory; computational electromagnetics; electromagnetic wave absorption; electromagnetic wave scattering; finite difference time-domain analysis; numerical stability; transmission line theory; EM problems analysis; FDTD method; dispersive boundary condition; electromagnetic problems; finite-difference time-domain method; generalized ABC; generalized Z-domain absorbing boundary conditions; integrated filters; numerical dispersive characteristics; numerical stability; patch antennas; recurrence formulas; scattering problems; transmission lines; Boundary conditions; Dispersion; Electromagnetic analysis; Electromagnetic scattering; Filters; Finite difference methods; Millimeter wave technology; Numerical stability; Patch antennas; Time domain analysis;
fLanguage :
English
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9480
Type :
jour
DOI :
10.1109/TMTT.2002.806908
Filename :
1159670
Link To Document :
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