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On analytical absorbing boundary conditions in FDTD

✍ Scribed by Jihui Yu; Yongming Li; Heng-Ming Tai

Publisher
John Wiley and Sons
Year
2002
Tongue
English
Weight
146 KB
Volume
33
Category
Article
ISSN
0895-2477

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✦ Synopsis

Abstract

In this Letter a new algorithm to compute the corner‐point field components of a two‐dimensional (2‐D) Mur absorbing boundary condition (ABC) in the finite‐difference–time‐domain (FDTD) method is presented. It is shown that field value calculation at the corner points of the truncation domain affects the accuracy of the FDTD. The proposed scheme overcomes the drawbacks of reflection on the truncated boundary and computation divergence that may occur when the existing scheme is used. Numerical examples are illustrated to validate the effectiveness of the proposed scheme. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 33: 437–440, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10344

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