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Envelope ADI–FDTD Method and Its Application in Three-Dimensional Nonuniform Meshes

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2 Author(s)
Shu-Hai Sun ; Dept. of Electr. Eng., I-Shou Univ., Kaohsiung ; Choi, C.T.M.

The envelope alternating-direction-implicit finite difference time domain (ADI-FDTD) method in 3-D nonuniform meshes was proposed and studied. The phase velocity error for the envelope ADI-FDTD and ADI-FDTD methods in uniform and nonuniform meshes and different temporal increments were studied. A cavity problem was studied using the envelope ADI-FDTD and ADI-FDTD methods in graded meshes and the conventional FDTD method in a uniform mesh. The simulation results show that the envelope ADI-FDTD performs better than the ADI-FDTD in numerical accuracy

Published in:

Microwave and Wireless Components Letters, IEEE  (Volume:17 ,  Issue: 4 )