Modeling of an infinite line source in FDTD

Abstract

Since its introduction by Yee [1], the FDTD method has been used extensively to model electromagnetic field interactions with complex heterogeneous bodies. A multitude of source functions for complex source geometries have also been successfully developed over the past 30 years. A major step forward in helping to develop these source functions was the introduction of the total/scattered field formulation by Taflove [2]. The importance of this work was that it allowed algorithms to efficiently implement uniform plane wave sources from arbitrary directions in FDTD. This is particularly important for modeling problems where both the total and scattered fields are of interest.