OPTIMIZATION OF GRADED MATERIALS FOR BROADBAND RADOME WALL WITH DRR CONTROL USING A HYBRID METHOD | Zendy

Yunxiang Zhang | Zendy; Zhiqin Zhao | Zendy; Zaiping Nie | Zendy; Qing Liu | Zendy

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OPTIMIZATION OF GRADED MATERIALS FOR BROADBAND RADOME WALL WITH DRR CONTROL USING A HYBRID METHOD

Author(s) -

Yunxiang Zhang,

Zhiqin Zhao,

Zaiping Nie,

Qing Liu

Publication year - 2015

Publication title -

progress in electromagnetics research m

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.216

H-Index - 31

ISSN - 1937-8726

DOI - 10.2528/pierm15081004

Subject(s) - radome , materials science , permittivity , broadband , genetic algorithm , convergence (economics) , jitter , computer science , hybrid algorithm (constraint satisfaction) , range (aeronautics) , dielectric , electronic engineering , optoelectronics , telecommunications , engineering , composite material , antenna (radio) , constraint logic programming , constraint satisfaction , machine learning , artificial intelligence , probabilistic logic , economics , economic growth

A graded material structure is optimized for broadband radome application by using hybrid method in this paper. In the optimization, dynamic range ratio (DRR) of real permittivity and loss of material are taken into considerations. By using an analytical function, the optimization problem with the DRR constraint is converted to an unconstrained problem. The proposed hybrid method is a combination of trust region method (TRM) and genetic algorithm (GA). Firstly (TRM) is applied to optimize the dielectric constant distribution. Then the result of TRM is used as initial value of GA. GA is employed to improve the global property of the results provided by TRM. Because TRM has the advantage of fast searching speed and GA has the advantage of global property, the hybrid method has the feature of fast convergence speed. And the jitter property of GA permittivity distribution is moderated. The effectiveness of the hybrid is validated through the designs of two broadband radome walls. The minimum power transmission efficiency is 81.9% ranging from 1 GHz to 18 GHz for normal incidence.

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