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Open AccessArticle

Low-Cost Multi-Objective Optimization of Multiparameter Antenna Structures Based on the l1 Optimization BPNN Surrogate Model

1
School of Computer Science and Engineering, Central South University, Changsha 410083, China
2
School of Aeronautics and Astronautics, Central South University, Changsha 410083, China
*
Author to whom correspondence should be addressed.
Electronics 2019, 8(8), 839; https://doi.org/10.3390/electronics8080839
Received: 5 July 2019 / Revised: 22 July 2019 / Accepted: 24 July 2019 / Published: 26 July 2019
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PDF [3846 KB, uploaded 30 July 2019]
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Abstract

The development of modern wireless communication systems not only requires the antenna to be lightweight, low cost, easy to manufacture and easy to integrate but also imposes requirements on the miniaturization, wideband, and multiband design of the antenna. Therefore, designing an antenna that quickly and effectively meets multiple performance requirements is of great significance. To solve the problem of the large computational cost of traditional multi-objective antenna design methods, this paper proposes a backpropagation neural network surrogate model based on l1 optimization (l1-BPNN). The l1 optimization method tends to punish larger weight values and select smaller weight values so as to preserve a small amount of important weights and reset relatively unimportant weights to zero. By using l1 optimization method, the network mapping structure can be automatically adjusted to achieve the most suitable and compact structure of the surrogate model. Furthermore, for multi-parameter antenna design problems, a fast multi-objective optimization framework is constructed using the proposed l1-BPNN as a surrogate model. The framework is illustrated using a miniaturized multiband antenna design case, and a comparison with previously published methods, as well as numerical validation, is also provided. View Full-Text
Keywords: multi-objective optimization; antenna design; surrogate model; backpropagation neural network; l1 optimization multi-objective optimization; antenna design; surrogate model; backpropagation neural network; l1 optimization
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Dong, J.; Qin, W.; Mo, J. Low-Cost Multi-Objective Optimization of Multiparameter Antenna Structures Based on the l1 Optimization BPNN Surrogate Model. Electronics 2019, 8, 839.

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