Abstract
In this article, two kinds of absorbing boundary conditions (ABCs) are jointly employed for the ADI-FDTD algorithm: The Gedney's uniaxial PML (UPML) scheme is applied in propagation direction and Mur's first order ABC is set on the other outer surfaces. The manner to apply the source excitation in ADI-FDTD algorithm is described. The numerical simulation of a planar antenna demonstrates the validity of this ADI-FDTD scheme. The results show that the number of iterations with this algorithm can be four times less than that with the conventional FDTD without the large loss of accuracy
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