A. Doicu et T. Wriedt, Null-field method with discrete sources to electromagnetic scattering fromlayered scatterers, COMP PHYS C, 138(2), 2001, pp. 136-142
A novel formulation for improving the numerical stability of the null-field
method for highly elongated and flattened layered scatterers is presented.
The key step in this approach is to approximate the surface current densit
ies by the lowest-order multipoles located in the complex plane. The accura
cy of the proposed method is investigated from a numerical point of view. (
C) 2001 Elsevier Science B.V. All rights reserved.