Dispersive contour-path algorithm for the FDTD analysis of a periodic structure at oblique incidence

Arbitrarily-shaped dispersive media can be treated with the contour-path (DCP) FDTD method. We extend DCP-FDTD method for analysis of a periodic structure to case at oblique incidence. A trapezoidal recursive convolution technique is used incorporate into The transmission characteristics metallic cylinder array are evaluated and discussed. It found that present gives almost same solution as conventional staircase method, even sampling width five times large counterpart.