Abstract
A numerical solution of the combined-field integral equation for wave scattering from homogeneous dielectric bodies is proposed. The approach uses a simultaneous representation of the equivalent surface current densities in both curl-conforming and divergence-conforming bases, defined on a dual interlocking mesh representing the scatterer surface. The dual-mesh based approach is stable at internal resonances and allows the use of the optimum type of basis function for each integral operator within the combined field equation. The procedure can also be used to obtain a radiation boundary condition for differential equation formulations.
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