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Efficient Implementation of the Divergence-Preserved ADI-FDTD Method

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4 Author(s)
Shunchuan Yang ; Dept. of Electr. & Comput. Eng., Dalhousie Univ., Halifax, NS, Canada ; Chen, Z.D. ; Yu, Y.J. ; Ponomarenkno, S.

Unlike its conventional version, an unconditionally stable alternating-direction-implicit (ADI) finite-difference time-domain (FDTD) method was recently proposed that retains the correct divergence property but with higher computation expenditure. In this letter, a newly formulated divergence-preserved ADI-FDTD method is proposed. It takes about 41.7% less count of floating-point operations than the original divergence-preserved ADI-FDTD method without scarifying accuracy. Detailed analysis and numerical examples are presented to verify the improvement of computational efficiency.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:11 )