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A Multi-Objective Evolutionary Algorithm Based on Decomposition for Optimal Design of Yagi-Uda Antennas

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5 Author(s)
Carvalho, R. ; Dept. of Electr. Eng., Fed. Univ. of Minas Gerais, Belo Horizonte, Brazil ; Saldanha, R.R. ; Gomes, B.N. ; Lisboa, A.C.
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This paper presents a multi-objective evolutionary algorithm based on decomposition (MOEA/D) to design broadband optimal Yagi-Uda antennas. A multi-objective problem is formulated to achieve maximum directivity, minimum voltage standing wave ratio and maximum front-to-back ratio. The algorithm was applied to the design of optimal 3 to 10 elements Yagi-Uda antennas, whose optimal Pareto fronts are provided in a single picture. The multi-objective problem is decomposed by Chebyshev decomposition, and it is solved by differential evolution (DE) and Gaussian mutation operators in order to provide a better approximation of the Pareto front. The results show that the implemented MOEA/D is efficient for designing Yagi-Uda antennas.

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Magnetics, IEEE Transactions on  (Volume:48 ,  Issue: 2 )