Evaluation of PO and EEC Radiation Integrals on Quadratic Triangles and Edges in Time Domain

A scheme to evaluate the physical optics (PO) and equivalent edge currents (EEC) integrals exactly on quadratic triangles and edges, respectively, in time domain is presented. Using the Radon transform interpretation of the radiation integrals, the PO integral is evaluated exactly on the surface of the quadratic triangle using appropriate order Gauss-Legendre quadrature rule (GLQR) and the EEC integral is evaluated in closed-from on the edge of the quadratic triangle. A numerical example that shows the accuracy of the proposed scheme is presented.