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Split-Step Finite-Difference Time-Domain Method with fourth order accuracy in time

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2 Author(s)
Ding Yu Heh ; Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore ; Eng Leong Tan

This paper presents an unconditionally stable split-step finite-difference time-domain (SS-FDTD) method with 4th order accuracy in time. Analytical proof of its unconditional stability is provided and numerical dispersion results are shown. Compared to the 2nd order SS-FDTD, the 4th order SS-FDTD yields a lower phase velocity error. Compared further to the 2nd order SS-FDTD with three iterations (for the same number of time marching steps), the 4th order SS-FDTD still achieves better numerical dispersion performance with sufficiently fine mesh.

Published in:

Electromagnetic Compatibility and 19th International Zurich Symposium on Electromagnetic Compatibility, 2008. APEMC 2008. Asia-Pacific Symposium on

Date of Conference:

19-23 May 2008