Title :
Design Optimization of Planar Structures Using Self-Adjoint Sensitivity Analysis
Author :
Zhang, Yifan ; Nikolova, Natalia K. ; Meshram, Manoj K.
Author_Institution :
Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, ON, Canada
fDate :
6/1/2012 12:00:00 AM
Abstract :
A new practical approach to the S -parameter sensitivity analysis of planar structures is proposed. The response sensitivities are obtained with a self-adjoint approach with discrete shape perturbations on non-uniform method-of-moment grid. The technique is illustrated through the S -parameter sensitivity analysis of a planar printed antenna and a microwave double-stub tuner. The computed sensitivities are validated by comparing with the central finite-difference estimates at the response level. Gradient-based optimization is performed using the sensitivity information. The performance of the optimized design is verified by simulation and by measurement.
Keywords :
finite difference methods; gradient methods; microstrip antennas; microwave antennas; optimisation; planar antennas; S -parameter sensitivity analysis; central finite-difference estimates; discrete shape perturbations; gradient-based optimization; microwave double-stub tuner; nonuniform method-of-moment grid; planar printed antenna; planar structure design optimization; response sensitivities; self-adjoint sensitivity analysis; sensitivity information; Libraries; Moment methods; Optimization; Scattering parameters; Sensitivity analysis; Transmission line matrix methods; Antenna input impendence analysis; frequency domain; method of moments; response sensitivity analysis; self-adjoint sensitivity analysis; ultra wideband antennas;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
DOI :
10.1109/TAP.2012.2194684