Abstract
The problem of solving open 2D scattering problems using the finite element method (FEM) and the multi-filament current method (MFCM) is addressed in this paper. The second order absorbing boundary condition of Bayliss-Turkel, for noncircular boundaries, and the filament positioning problem in MFCM are investigated. Two problems defined by two perfect cylindric dielectric bodies, with circular and square cross section, illuminated by a transverse magnetic plane wave are studied. Both the procedures investigated to place the filaments are efficient. The results obtained using the FEM, with first and second order triangular elements, are compared to those obtained using MFCW and show good agreement.
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