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Titolo:
Vector evaluated GA-ICT for novel optimum design method of arbitrarily arranged wire grid model antenna and application of GA-ICT to sector-antenna downsizing problem
Autore:
Maruyama, T; Hori, T;
Indirizzi:
Nippon Telegraph & Tel Publ Corp, NTT Network Innovat Labs, Wireless Syst Innovat Lab, Yokosuka, Kanagawa 2390847, Japan Nippon Telegraph & Tel Publ Corp Yokosuka Kanagawa Japan 2390847 7, Japan
Titolo Testata:
IEICE TRANSACTIONS ON COMMUNICATIONS
fascicolo: 11, volume: E84B, anno: 2001,
pagine: 3014 - 3022
SICI:
0916-8516(200111)E84B:11<3014:VEGFNO>2.0.ZU;2-I
Fonte:
ISI
Lingua:
ENG
Soggetto:
GENETIC ALGORITHMS; ELEMENTS;
Keywords:
genetic algorithm; optimization; vector evaluation method; ICT; sector antenna; small antenna; Yagi-Uda antenna;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
18
Recensione:
Indirizzi per estratti:
Indirizzo: Maruyama, T Nippon Telegraph & Tel Publ Corp, NTT Network Innovat Labs, Wireless Syst Innovat Lab, Yokosuka, Kanagawa 2390847, Japan Nippon Telegraph& Tel Publ Corp Yokosuka Kanagawa Japan 2390847
Citazione:
T. Maruyama e T. Hori, "Vector evaluated GA-ICT for novel optimum design method of arbitrarily arranged wire grid model antenna and application of GA-ICT to sector-antenna downsizing problem", IEICE TR CO, E84B(11), 2001, pp. 3014-3022

Abstract

This paper proposes the Vector Evaluated GA-ICT (VEGA-ICT), a novel designmethod that employs the Genetic Algorithm (GA) to obtain the optimum antenna design. GA-ICT incorporates an arbitrary wire-grid model antenna to derive the optimum solution without any basic structure or limitation on the number of elements by merely optimizing an objective function. GA-ICT comprises the GA and an analysis method, the Improved Circuit Theory (ICT), with the following characteristics. (1) To achieve optimization of an arbitrary wire-grid model antenna without a basic antenna structure, the unknowns of the ICT are directly assigned to variables of the GA in the GA-ICT. (2) To achieve a variable number of elements, duplicate elements generated by usingthe same feasible region are deleted in the ICT. (3) To satisfy all complex design conditions, the GA-ICT generates an objective function using a weighting function generated based on electrical characteristics, antenna configuration, and size. (4) To overcome the difficulty of convergence caused by the nonlinearity of each term in the objective function, GA-ICT adopts a vector evaluation method. In this paper, the novel GA-ICT method is appliedto downsize sector antennas. The calculation region in GA-ICT is reduced by adopting cylindrical coordinates and a periodic imaging structure. The GA-ICT achieves a 30% reduction in size compared to the previously reported small sector antenna, MS-MPYA, while retaining almost the same characteristics.

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Documento generato il 30/03/20 alle ore 10:19:56