Optimization of microwave devices using 3-D finite elements and the design sensitivity of the frequency response

Author

Nair, D. ; Webb, J.P.

Author_Institution

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

Volume

39

Issue

3

fYear

2003

fDate

5/1/2003 12:00:00 AM

Firstpage

1325

Lastpage

1328

Abstract

Direct optimization of microwave devices is more efficient if sensitivities of the cost function are available. An earlier method for finding sensitivities of the scattering matrix efficiently over a range of frequencies, from a finite-element analysis, is applied here to the optimization problem. The method is tested on rectangular waveguide components with 1-4 design parameters: a right-angle miter bend, an E-plane U-bend, and a waveguide impedance transformer.

Keywords

S-matrix theory; S-parameters; finite element analysis; frequency response; gradient methods; microwave devices; rectangular waveguides; sensitivity analysis; waveguide components; E-plane U-bend; FEM; cost function; electromagnetic analysis; finite-element analysis; microwave device optimization; rectangular waveguide components; right-angle miter bend; scattering matrix; sensitivities; waveguide impedance transformer; Cost function; Design optimization; Finite element methods; Frequency response; Microwave devices; Optimization methods; Rectangular waveguides; Scattering; Transmission line matrix methods; Waveguide components;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2003.810520

Filename

1198465