Abstract
A well-conditioned coupled set of surface (S) and volume (V) electric field integral equations (EFIEs) for analyzing wave interactions with densely discretized structures comprising both perfect electrically conducting (PEC) and penetrable volumes is presented. Whereas the V-EFIE operator is well-posed irrespective the mesh it operates on [1], the classically formulated S-EFIE operator is ill-posed when applied to densely discretized surfaces [2–4]. This renders the matrix system arises from the discretization of the coupled set of S-and V-EFIEs ill-posed, and its iterative solution inefficient or even impossible.
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