Uniform Asymptotic Solution for Dielectric Wedge Diffraction Based on Equivalent Currents

In this study, a uniform asymptotic solution is proposed to calculate the diffraction field by a dielectric wedge based on the equivalent current method. In this formulation, the scattering field is obtained from the radiation integral of the equivalent electric and magnetic currents determined by the geometrical optics (GO) field on the wedge surface. Numerical calculations are made to compare the results with those by other methods, such as the conventional physical optics approximation (PO) and the hidden rays of diffraction (HRD). A good agreement has been observed to confirm the validity of our method.