Stable discretization of the electric-magnetic field integral equation with the divergence taylor-orthogonal basis functions

The discretization of the Electric-Magnetic Field Integral Equation (EMFIE) with the divergence Taylor-Orthogonal basis functions (div-TO) mitigates the observed discrepancy in the computed RCS for sharp-edged objects of the RWG-discretization of the Magnetic-Field Integral Equation (MFIE). In the low frequency regime, the resulting impedance matrix becomes increasingly ill-conditioned as the frequency decreases. From the modification of this implementation, in this paper we present a “stable div-TO discretization of the EMFIE”, as we name it, which gives rise to: (i) a bounded and low condition number for the impedance matrix at low frequencies and (ii) a reduction of the RCS-deviation with respect to the EFIE-reference.