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Physics-based preconditioner for iterative algorithms in MoM-problems

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2 Author(s)
von Hagen, J. ; Inst. fur Hochstfrequenztechnik und Elektron., Karlsruhe Univ., Germany ; Wiesbeck, W.

An efficient method to solve electromagnetic scattering problems involving several metallic scatterers or bodies composed of dielectric and metallic regions is proposed. For this, the block Jacobi preconditioner is combined with the iterative transpose-free quasi-minimum residual (TFQMR) algorithm. For best performance, the blocks for the preconditioner are chosen according to individual scatterers or groups of scatterers, or according to the electric and magnetic current basis functions for dielectric/metallic scatterers.

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Antennas and Propagation, IEEE Transactions on  (Volume:50 ,  Issue: 9 )