Implementation of Local Boundary Conditions in Two ADI-FDTD Updating Schemes

Saehoon JU
Kyung-Hoon LEE
In-Ho HWANG
Hyung-Hoon KIM
Hyeongdong KIM

Publication
IEICE TRANSACTIONS on Communications   Vol.E90-B    No.5    pp.1286-1289
Publication Date: 2007/05/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e90-b.5.1286
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Antennas and Propagation
Keyword: 
alternating-direction implicit (ADI) method,  FDTD method,  updating scheme,  

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Summary: 
In numerical simulations of microwave structures using the alternating-direction implicit finite-difference time-domain (ADI-FDTD) method, the time marching scheme comprises two sub-iterations, where different updating schemes for evaluating E and H fields at each sub-iteration can be adopted. In this paper, the E-field implicit-updating (EFIU) and H-field implicit-updating (HFIU) schemes are compared with each other especially with regard to the implementation of local boundary conditions.