Title :
Gradient optimization of microwave devices using continuum design sensitivities from the adjoint problem
Author :
Yang, Y. ; Halleröd, T. ; Ericsson, D. ; Hellervik, A. ; Bondeson, A. ; Rylander, T.
Author_Institution :
Dept. of Electromagn., Chalmers Univ. of Technol., Goteborg, Sweden
fDate :
5/1/2005 12:00:00 AM
Abstract :
Design sensitivities for microwave problems derived in continuum form are applied to the shape and material parameters optimization. In particular, we optimize several scatterers´ radar cross section (RCS) and a T-junction´s reflection coefficient. The optimizations converge, in a small number of iterations, to designs of highly improved performance. Both frequency- and time-domain electromagnetic field solvers are tested and compared for the optimization of RCS.
Keywords :
electromagnetic fields; frequency-domain analysis; microwave devices; optimisation; radar cross-sections; time-domain analysis; RCS optimization; T-junction reflection coefficient; adjoint equation; continuum design sensitivity; frequency-domain electromagnetic field solver; gradient optimization; material parameters optimization; microwave devices; microwave problems; radar cross section; shape optimization; time-domain electromagnetic field solver; Design optimization; Electromagnetic fields; Electromagnetic reflection; Electromagnetic scattering; Frequency; Microwave devices; Radar cross section; Radar scattering; Shape; Time domain analysis; Adjoint equation; frequency-domain method; gradient; optimization; radar cross section (RCS); time-domain method;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2005.845993
