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Design Optimization of Planar Structures Using Self-Adjoint Sensitivity Analysis

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3 Author(s)
Yifan Zhang ; Dept. of Electr. & Comput. Eng., McMaster Univ., Hamilton, ON, Canada ; Nikolova, N.K. ; Meshram, M.K.

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.

Published in:

Antennas and Propagation, IEEE Transactions on  (Volume:60 ,  Issue: 6 )

Date of Publication:

June 2012

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