A Mur Type Analytical Absorbing Boundary Condition for Multidimensional Wave Analysis with the Directional Splitting Technique

Kensuke SASAKI  Yukihisa SUZUKI  

IEICE TRANSACTIONS on Electronics   Vol.E95-C   No.2   pp.309-312
Publication Date: 2012/02/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E95.C.309
Print ISSN: 0916-8516
Type of Manuscript: BRIEF PAPER
Category: Electromagnetic Theory
analytical absorbing boundary condition,  directional splitting,  finite-difference time-domain method,  cubic-interpolated pseudo particle method,  

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A Mur type analytical absorbing boundary condition (A-ABC), which is based on the one-dimensional one-way wave equation, is proposed for multidimensional wave analysis by introducing the directional splitting technique. This new absorbing boundary condition is expansion of the first-order Mur. The absorbing ability, required memory, and calculation speed of the Mur type A-ABC are evaluated by comparison with those of conventional ABCs. The result indicated that absorbing ability of the proposed ABC is higher than the first-order Mur and lower than the second-order Mur at large incident angle. While, our proposed ABC has advantage in both required memory and calculation speed by comparison with the second-order Mur. Thus, effectivity of the proposed Mur type A-ABC is shown.