A basis transformation technique with application to scattering by wires

A numerical basis transformation technique is described which may be applied, in conjunction with point-matching methods (e.g., piecewise uniform or piecewise linear methods), to obtain least-square solutions of electromagnetic scattering by thin wires. It is shown that reductions in both computer solution time and computer storage requirements result. The technique is demonstrated by applying it along with piecewise uniform methods to the solution of scattering by circular loops and straight wires.