Estimating errors in design sensitivities

Author

Nair, D. ; Webb, J.P.

Author_Institution

Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, Que.

Volume

42

Issue

4

fYear

2006

fDate

4/1/2006 12:00:00 AM

Firstpage

559

Lastpage

562

Abstract

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

Keywords

error analysis; estimation theory; microwave circuits; network analysis; sensitivity analysis; design sensitivities; discretization error; errors estimation; field solution; finite element analysis; microwave scattering parameters; tetrahedral elements; waveguide filter; waveguide transformer; Automation; Computer errors; Electromagnetic waveguides; Equations; Estimation error; Finite element methods; Microwave devices; Microwave filters; Microwave theory and techniques; Scattering parameters; Design automation; error analysis; finite element method; microwave devices; sensitivity;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2006.871459

Filename

1608267