Amplitude and slope diffraction coefficients for S-UTD-CH model

Diffraction mechanism is vital to predict the field strength and calculate the coverage in urban, rural and indoor. Diffraction occurs on the sharp surfaces like rooftop, edge, corner, and vertex. S-UTD-CH model computes three type of electromagnetic wave incidence such as direct, reflected and diffracted waves, respectively. In the case of close obstacle height, diffraction mechanism is dominant. In order to calculate the diffracted field amplitude and slope diffraction coefficient and first and second derivative of these have to derive correctly. In this paper, derivations will be made knife edge and wedge structures. Analysis about amplitude and diffraction coefficient will be made.