Galerkin operators in adaptive integral method implementations

The adaptive integral method (AIM) is a fast method associated with O(N-1.5 ) or less complexity. It has been extensively used for the analysis of meta llic scatterers on the basis of the electric field integral equation (EFIE) , and the AIM implementation is extended to include more general surface ty pes such as impedance, resistive, dielectric and others. The associated mul tipole expansions of the basis functions are presented for all integral ope rators. and examples of perfect electrically conducting (PEC) and dielectri c surfaces are given for validation.