Abstract
A finite-difference time-domain (FDTD) scheme for modeling wave propagation in Havriliak–Negami media has been reported in the above paper. The scheme has been based on the approximation of the fractional differential operator by use of truncated binomial series. However, in this letters, it is mentioned that the binomial series approximation is not valid for angular frequencies higher than the characteristic value $1/\tau$ of the medium. As a result, the applicability of the proposed FDTD scheme is limited.
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More From: IEEE Transactions on Microwave Theory and Techniques
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