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Estimating errors in design sensitivities

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2 Author(s)
Nair, D. ; Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, Que. ; Webb, J.P.

Design sensitivities are useful quantities that may be efficiently computed by finite element analysis, from the field solution and its adjoint. However, the computed sensitivities are subject to discretization error. A method is described for the a posteriori estimation of this error, making use of the properties of hierarchal finite elements. The method is applied to the sensitivities of microwave scattering parameters, computed with three-dimensional tetrahedral elements. Results for a waveguide filter, a waveguide transformer, and a magic T demonstrate the quality of the estimator

Published in:

Magnetics, IEEE Transactions on  (Volume:42 ,  Issue: 4 )

Date of Publication:

April 2006

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