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Impedance boundary conditions in a hybrid FEM/MOM formulation

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4 Author(s)
Hao Wang ; Univ. of Missouri-Rolla, Rolla, MO, USA ; Minjia Xu ; Chen Wang ; Hubing, T.

When numerically modeling structures with imperfect conductors or conductors coated with a dielectric material, impedance boundary conditions (IBCs) can substantially reduce the amount of computation required. This paper incorporates the IBC in the finite-element method (FEM) part of a FEM/method of moments (FEM/MoM) modeling code. Properties of the new formulation are investigated and the formulation is used to model three practical electromagnetic problems. Results are compared to either measured data or other numerical results. The effect of the IBC on the condition number of hybrid FEM/MoM matrices is also discussed.

Published in:

Electromagnetic Compatibility, IEEE Transactions on  (Volume:45 ,  Issue: 2 )

Date of Publication:

May 2003

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