Title :
Estimating errors in design sensitivities
Author :
Nair, D. ; Webb, J.P.
Author_Institution :
Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, Que.
fDate :
4/1/2006 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2006.871459
