A second-order cross fractal meta-material structure used in low-frequency microwave absorbing materials

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• 作者：Daqing Huang (1) (2)
  Feiyu Kang (1)
  Chunlei Dong (3)
  Zhuohui Zhou (2)
  Xiang Liu (2)
  Heyan Ding (2)
  
• 刊名：Applied Physics A: Materials Science & Processing
• 出版年：2014
• 出版时间：May 2014
• 年：2014
• 卷：115
• 期：2
• 页码：627-635
• 全文大小：
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• 作者单位：Daqing Huang (1) (2)
  Feiyu Kang (1)
  Chunlei Dong (3)
  Zhuohui Zhou (2)
  Xiang Liu (2)
  Heyan Ding (2)
  
  1. Materials science and Engineering Department, Tsinghua University, Beijing, 100083, People’s Republic of China
  2. Beijing Institute of Aeronautical Materials AVIC, Beijing, 100095, People’s Republic of China
  3. Shenyang Institute of the AVIC, Shenyang, 110035, People’s Republic of China
  
• ISSN：1432-0630

文摘

A second-order cross fractal meta-material structure was designed and fabricated in this project. A kind of conventional magnetic material which works at low frequency was used as the absorber substrate. The simulation results demonstrated an absorber band below ?0?dB between 4 and 8?GHz, and there was a 1.7?GHz expansion when the meta-material structure was not loaded. The experiment results indicated a similar absorber band between 3 and 5.5?GHz, which was 1.09?GHz wider than meta-material structure and the absorber band expanded by 88?%. Then we further analyzed the energy distribution on the surface of the meta-material structure which perfectly explained the expansion of the absorption band and implied a way to achieve a lower wider absorber band.