Authors: Mike Potter and Jean-Pierre Bérenger
Source: FERMAT, Volume 19, Article 1, Jan.-Feb., 2017
Abstract: The Total Field/ Scattered Field method, also called the Huygens surface method, was introduced more than three decades ago to impress an incident plane wave in the computational domain of the finite-difference time-domain (FDTD) method. It is now a basic feature of FDTD softwares. This paper summarizes the principle of the method and reviews the improvements and extensions added over the years to reduce the spurious effect of the FDTD dispersion and to apply the method in various contexts.
Index Terms: FDTD, total field, scattered field, TF/SF, Huygens surface, plane wave, auxiliary equation.
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A Review of the Total Field/Scattered Field Technique for the FDTD Method