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Reduced‐cost design optimization of antenna structures using adjoint sensitivity
Author(s) -
Koziel Slawomir,
Ogurtsov Stanislav
Publication year - 2012
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.27112
Subject(s) - benchmark (surveying) , antenna (radio) , sensitivity (control systems) , matlab , computer science , electronic engineering , mathematical optimization , engineering , mathematics , telecommunications , geodesy , geography , operating system
Abstract We discuss a simple and yet robust algorithm for electromagnetic (EM) simulation‐driven design optimization of antennas. Our procedure exploits adjoint sensitivities to obtain gradient information without extra EM simulations as well as adaptive algorithm that adjusts the search radius for optimizing the linear model of the antenna. The proposed technique is capable of yielding an optimized antenna design at a much lower computational cost than a benchmark algorithm, Matlab's fminimax, also using adjoint sensitivities. Our approach is demonstrated using two antenna design cases: a planar inverted‐F antenna and a wideband hybrid antenna. The design time savings are between 60 and 75% with respect to the benchmark method. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2594–2597, 2012; this online at wileyonlinelibrary.com. DOI 10.1002/mop.27112