Local Approximation Based Material Averaging Approach in the Finite Integration Technique

摘要

The a priori known field behavior in the vicinity of simple geometrical shapes is used to derive a new procedure for material averaging in the Finite Integration Technique. We investigate a two-dimensional setup so far. The accuracy of a staircase approximation of wave scattering at a dielectric cylinder is improved and the resulting errors are well below the common facet-weighted averaging procedures.