Two-level singularity extraction for curl-type operators in layered-medium green's functions

摘要

In this paper, a two-level asymptotic subtraction method is developed to remove all unbounded singularities that appear in the curl-type layered-medium Green's function (LMGF) for uniaxial media. This allows for a more robust and more accurate interpolation scheme for the efficient evaluation of the curl-type operators in the LMGF.