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Finite element modeling and multigrid preconditioner using adaptive triangular meshes

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3 Author(s)
Yu Zhu ; Cadence Design Syst. Inc., San Jose, CA, USA ; An-Yu Kuo ; A. C. Cangellaris

The letter describes a finite element method (FEM) using adaptive triangular meshes for the modeling of microwave devices. A robust preconditioning technique is provided for the fast solution of the resultant FEM matrix equations. The proposed preconditioner is based on a multigrid scheme for the vector-scalar potential FE formulation of the electromagnetic problem. Numerical experiments demonstrate its superior numerical convergence.

Published in:

IEEE Microwave and Wireless Components Letters  (Volume:16 ,  Issue: 6 )