Efficient Analysis of Antenna Around Electrically Large NURBS Platform With Accelerating MOM-PO Method

A novel accelerating hybrid method of moments and physical optics (MOM-PO) method is presented to analyze the antenna around electrically large scatterer modeled with nonuniform rational B-spline (NURBS) surfaces. Stationary phase method (SPM) is applied to compute the PO integral of induced current. Two accelerating techniques, grouping of the MoM region and interpolation of critical points, are used to enhance the computational efficiency. The comparison of the results obtained by this method with that by existing NURBS MOM-PO and Triangle MOM-PO shows that the present method is feasible. The execution time consumed in different methods is listed to demonstrate the high efficiency of this approach.