Sources for total-field/scattered-field formulation in FDTD simulation using approximations to dispersion equation

Abstract

A full set of numerical wave number k that includes imaginary part as function of frequency can now be obtained by a simple procedure which does not involve numerical root-finding scheme. FFT computation and data storage for the entire time sequence of all fields along the grids can also be avoided by approximating frequency domain inverse transform. The… (More)

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3 Figures and Tables