A conformal finite difference time domain technique for modeling curved dielectric surfaces

In this paper, we present a simple yet accurate conformal Finite Difference Time Domain (FDTD) technique, which can be used to analyze curved dielectr ic surfaces. Unlike the existing conformal techniques for handling dielectr ics, the present approach utilizes the individual electric field component along the edges of the cell, rather than requiring the calculation of its a rea or volume, which is partially filled with a dielectric material. The ne w technique shows good agreement with the results derived by Mode Matching and analytical methods.