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Volume 41 Issue 10
Oct.  2015
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Journal of Beijing University of Aeronautics and Astronautics  > 2015  >  41(10): 1853-1858.
QI Kainan, WANG Yongfeng, HOU Xinyu, et al. Analysis and optimization of active tunable microwave absorber[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(10): 1853-1858. doi: 10.13700/j.bh.1001-5965.2015.0211(in Chinese)
Citation: QI Kainan, WANG Yongfeng, HOU Xinyu, et al. Analysis and optimization of active tunable microwave absorber[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(10): 1853-1858. doi: 10.13700/j.bh.1001-5965.2015.0211(in Chinese)
shu

Analysis and optimization of active tunable microwave absorber

doi: 10.13700/j.bh.1001-5965.2015.0211
  • 1.

    School of Information Engineering, Communication University of China, Beijing 100024, China

  • 2. Science and Technology on Electromagnetic Scattering Laboratory, Beijing 100854, China

  • Received Date: 10 Apr 2015
  • Rev Recd Date: 08 May 2015
  • Publish Date: 20 Oct 2015
    Abstract
  • In order to improve the limited band of passive radar absorbing materials, an active tunable microwave absorber was designed based on transmission line theory. The absorber was a planar structure based upon the topology of a Salisbury screen, but in which the conventional resistive layer was replaced by an active frequency selective surface (FSS) controlled by PIN diodes. Measured data of reflectivity are presented and show that the reflectivity response of the absorber can be controlled by changing bias current. When bias current changes from 0 to 0.5mA, the optimal absorbing frequency can be controlled over the frequency band from 7GHz to 12.5GHz. A double polarization tunable microwave absorber is optimized based on genetic algorithm, simulation results show that the reflectivity response of the absorber can be controlled over the frequency band from 5.6GHz to 17.6GHz.

     

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