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 scattering from arbitrarily shaped conducting bodies, A feature of the technique presented is the independence of the geometrical model from the frequency which avoids the regeneration of the geometry model when the 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.