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The simulation of radiation problems typically involves localized excitation of a small and refined portion of the mesh representing the antenna. Due to this fact and the implicit units imbalance of problems comprising wire and surface elements, the convergence of the iterative solutions often shows a bad behavior. In this work, a preconditioning scheme is presented which moderates the strong dominance...
Efficient solutions of integral numerical methods require the use of effective preconditioners when analyzing electromagnetic radiation problems. In addition to the known disparities in the eigenvalues magnitude values, which are associated to the strong self-coupling of the antennas, combining wire and surface basis functions implies the presence of incoherent quantities from a dimensional point...
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