An isotropy-improved nonstandard finite-difference time-domain method

descriptionPublicationkeyboard_double_arrow_right Article 01 Jul 2006Publisher:Institute of Electrical and Electronics Engineers (IEEE)Journal:IEEE Transactions on Antennas and Propagation, volume 54, pages 1,935-1,942 (issn: 0018-926X, eissn: 1558-2221,

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Authors: Bo Yang; Constantine A. Balanis;

doi: 10.1109/tap.2006.877185

An isotropy-improved nonstandard finite-difference time-domain method

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Abstract

By introducing extra degree of freedom into the space- domain stencils, an isotropy-improved nonstandard finite-differ- ence (NSFD) (2,2) method is presented in this paper. The technique is also extended to the higher-order (2,4) stencils. Both analytical and numerical results are presented and compared to demonstrate the accuracy and the strengths of these methods. Index Terms—Dispersion, finite-difference time-domain (FDTD) methods, isotropy, nonstandard.

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