In this letter, the unconditionally stable associated hermite (AH) finite-difference time-domain (FDTD) method is extended to analyze three-dimensional (3-D) periodic structure. By combining the 3-D ...

In this paper, we apply the Ewald acceleration technique to the efficient evaluation of periodic Green's functions (GFs) for 2-D skewed lattices. We develop the expression for the optimal value of the ...