Models for the LE-FDTD resistive voltage source spanning multiple cells

Two approaches for implementing the LE-FDTD resistive voltage source spanning multiple cells are presented. The stability of these models are compared to a stable model presented in the literature. Additionally, the accuracy of all three models is evaluated in the time and frequency domains. Model 2 in this paper is in good agreement with the model from the literature, its computational load and memory requirements are smaller, and it is the simplest of the models discussed to implement.