Line integral representation of fringe waves for perfectly conducting and impedance surfaces

In this thesis, surface diffraction was investigated for perfectly conducting and impedance cylinders. Moreover, the line integral representations of fringe fields were derived analytically and generalized with using the unit vectors of related edge contours. Hence, the method of physical theory of diffraction was improved with reducing the scattering surface integral to line integral. The derived expressions were applied to perfectly conducting parabolic reflector geometry for investigation of exact diffracted fields. In addition, uniform expressions of scalar fringe waves which are based on the physical theory of diffraction method are derived for an impedance half-plane. The asymptotic and uniform expressions were compared for the impedance half-plane geometry. All these mentioned fields were plotted and analyzed numerically.