Fast and reliable knowledge-based design closure of antennas by means of iterative prediction-correction scheme - Publikacja - MOST Wiedzy

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Fast and reliable knowledge-based design closure of antennas by means of iterative prediction-correction scheme

Abstrakt

A novel framework for expedited antenna optimization with an iterative prediction-correction scheme is proposed. The methodology is comprehensively validated using three real-world antenna structures: narrow-band, dual-band and wideband, optimized under various design scenarios. The keystone of the proposed approach is to reuse designs pre-optimized for various sets of performance specifications and to encode them into metamodels that render good initial designs, as well as an initial estimate of the antenna response sensitivities. Subsequent design refinement is realized using an iterative prediction-correction loop accommodating the discrepancies between the actual and target design specifications. The presented framework is capable of yielding optimized antenna designs at the cost of just a few full-wave electromagnetic simulations. The practical importance of the iterative correction procedure has been corroborated by benchmarking against gradient-only refinement. It has been found that the incorporation of problem-specific knowledge into the optimization framework greatly facilitates parameter adjustment and improves its reliability. The proposed approach can be a viable tool for antenna optimization whenever a certain number of previously obtained designs are available or the designer finds the initial effort of their gathering justifiable by intended re-use of the procedure. The future work will incorporate response features technology for improving the accuracy of the initial approximation of antenna response sensitivities. The proposed optimization framework has been proved to be a viable tool for cost-efficient and reliable antenna optimization. To the knowledge, this approach to antenna optimization goes beyond the capabilities of available methods, especially in terms of efficient utilization of the existing knowledge, thus enabling reliable parameter tuning over broad ranges of both operating conditions and material parameters of the structure of interest.

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Informacje szczegółowe

Kategoria:
Publikacja w czasopiśmie
Typ:
artykuły w czasopismach
Opublikowano w:
ENGINEERING COMPUTATIONS nr 38, strony 1 - 22,
ISSN: 0264-4401
Język:
angielski
Rok wydania:
2021
Opis bibliograficzny:
Kozieł S., Pietrenko-Dąbrowska A.: Fast and reliable knowledge-based design closure of antennas by means of iterative prediction-correction scheme// ENGINEERING COMPUTATIONS -Vol. 38,iss. 10 (2021), s.1-22
DOI:
Cyfrowy identyfikator dokumentu elektronicznego (otwiera się w nowej karcie) 10.1108/ec-10-2020-0600
Weryfikacja:
Politechnika Gdańska

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