Title :
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
fDate :
5/1/2003 12:00:00 AM
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;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2003.810520
