Competitive binary multi-objective grey wolf optimizer for fast compact antenna topology optimization

Jian DONG, Xia YUAN, Meng WANG

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Front. Inform. Technol. Electron. Eng ›› 2022, Vol. 23 ›› Issue (9) : 1390-1406. DOI: 10.1631/FITEE.2100420
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Competitive binary multi-objective grey wolf optimizer for fast compact antenna topology optimization

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Abstract

We propose a competitive binary multi-objective grey wolf optimizer (CBMOGWO) to reduce the heavy computational burden of conventional multi-objective antenna topology optimization problems. This method introduces a population competition mechanism to reduce the burden of electromagnetic (EM) simulation and achieve appropriate fitness values. Furthermore, we introduce a function of cosine oscillation to improve the linear convergence factor of the original binary multi-objective grey wolf optimizer (BMOGWO) to achieve a good balance between exploration and exploitation. Then, the optimization performance of CBMOGWO is verified on 12 standard multi-objective test problems (MOTPs) and four multi-objective knapsack problems (MOKPs) by comparison with the original BMOGWO and the traditional binary multi-objective particle swarm optimization (BMOPSO). Finally, the effectiveness of our method in reducing the computational cost is validated by an example of a compact high-isolation dual-band multiple-input multiple-output (MIMO) antenna with high-dimensional mixed design variables and multiple objectives. The experimental results show that CBMOGWO reduces nearly half of the computational cost compared with traditional methods, which indicates that our method is highly efficient for complex antenna topology optimization problems. It provides new ideas for exploring new and unexpected antenna structures based on multi-objective evolutionary algorithms (MOEAs) in a flexible and efficient manner.

Keywords

Antenna topology optimization / Multi-objective grey wolf optimizer / High-dimensional mixed variables / Fast design

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Jian DONG, Xia YUAN, Meng WANG. Competitive binary multi-objective grey wolf optimizer for fast compact antenna topology optimization. Front. Inform. Technol. Electron. Eng, 2022, 23(9): 1390‒1406 https://doi.org/10.1631/FITEE.2100420
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2022 Zhejiang University Press
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