A MOMENT METHOD APPROACH USING FREQUENCY-INDEPENDENT PARAMETRIC MESHES

A moment method (MM) formulation using nonuniform rational B-splines ( NURBS) parametric surfaces is introduced to analyze radiation and scat tering from arbitrarily shaped conducting bodies, A feature of the tec hnique presented is the independence of the geometrical model from the frequency which avoids the regeneration of the geometry model when th e frequency changes, This feature is obtained by defining new sets of basis and testing functions that extend over subpatches in each NURBS, The proposed approach is accurate, flexible, and efficient.