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Topology optimization of reflector antennas based on integrated thermal-structural-electromagnetic analysis

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Abstract

In the area of structural design of reflector antennas, the existing researches mainly focus on size/shape optimization or just optimizing for structural performances (e.g., the reflector surface accuracy). Reflector antennas are one kind of equipment which is finally judged by its electromagnetic performances, and topology optimization has been proven a powerful method for structural design. In this paper, an integrated thermal-structural-electromagnetic (TSE) analysis procedure based on topology variables for reflector antennas is established for the first time. Then, topology optimization of the backup structure (BUS) of reflector antennas is developed and solved by genetic algorithms (GA) with bit-matrix representation of chromosome. The proposed optimization design method takes both the electromagnetic performance (antenna gain) and structure performance (total weight) into consideration. Numerical examples of BUS topology optimization of maximum gain with weight constraint are carried out. For comparison, a traditional minimum compliance design is also performed. The results illustrate the validity and effectiveness of the proposed method in the topology optimization of reflector antennas.

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Acknowledgments

The work was supported by National Natural Science Foundation of China [Grant No. 51490660, 51490661, 11403089] and the Xinjiang Uygur Autonomous Region Key Laboratory special fund [Grant N0. 2014KL012]. The help of Dr. Shuxin Zhang and Mr. Peiyuan Lian is also gratefully acknowledged.

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Authors and Affiliations

  1. Key Laboratory of Electronic Equipment Structure Design of Ministry of Education, Xidian University, Xi’an, 710071, China

    Naigang Hu, Hong Bao, Baoyan Duan, Guigeng Yang & Yali Zong

  2. The Eighth Academy of China Aerospace Science and Technology Corporation, Shanghai, 200233, China

    Meng Wang

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  1. Naigang Hu
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  2. Hong Bao
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  3. Baoyan Duan
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  4. Guigeng Yang
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  5. Yali Zong
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  6. Meng Wang
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Correspondence to Hong Bao.

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Hu, N., Bao, H., Duan, B. et al. Topology optimization of reflector antennas based on integrated thermal-structural-electromagnetic analysis. Struct Multidisc Optim 55, 715–722 (2017). https://doi.org/10.1007/s00158-016-1581-4

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  • DOI: https://doi.org/10.1007/s00158-016-1581-4

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