Title :
Physics-based preconditioner for iterative algorithms in MoM-problems
Author :
Von Hagen, Jürgen ; Wiesbeck, Werner
Author_Institution :
Inst. fur Hochstfrequenztechnik und Elektron., Karlsruhe Univ., Germany
fDate :
9/1/2002 12:00:00 AM
Abstract :
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.
Keywords :
electromagnetic wave scattering; iterative methods; method of moments; MoM-problems; TFQMR algorithm; block Jacobi preconditioner; dielectric regions; dielectric scatterers; electric current basis functions; electromagnetic scattering; iterative algorithms; iterative transpose-free quasi-minimum residual algorithm; magnetic current basis functions; metallic regions; metallic scatterers; physics-based preconditioner; Dielectrics; Electromagnetic scattering; Integral equations; Iterative algorithms; Iterative methods; Jacobian matrices; Linear systems; Moment methods; Testing; Vectors;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2002.802100
