Uniform diffraction coefficient for electromagnetic scattering by flat and curved plates

A diffraction coefficient is being proposed for plane-wave scattering by a straight edge in both planar and curved screens which is valid uniformly for all aspect angles. This new form of diffraction coefficient is obtained via Uniform Asymptotic Theory of Diffraction (UAT), where the arguments of the Fresnel integrals of the traditional Uniform Theory of Diffraction (UTD) coefficients are redefined by the Phase Detours (PDs) of the UAT formulations. The proposed coefficient is supported with the monostatic RCS predictions of flat plate and curved plate for soft polarization case. These predictions are compared with existing diffraction coefficients, full-wave simulation and with the available experimental results. This new diffraction coefficient shows superior nature over the existing coefficients when applied to the curved plate problem.