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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): 1785-1791.
FENG Jinjun, CAI Jun, HU Yinfu, et al. Application of dispersion characteristics of periodic structures for high frequency vacuum devices[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(10): 1785-1791. doi: 10.13700/j.bh.1001-5965.2015.0209(in Chinese)
Citation: FENG Jinjun, CAI Jun, HU Yinfu, et al. Application of dispersion characteristics of periodic structures for high frequency vacuum devices[J]. Journal of Beijing University of Aeronautics and Astronautics, 2015, 41(10): 1785-1791. doi: 10.13700/j.bh.1001-5965.2015.0209(in Chinese)
shu

Application of dispersion characteristics of periodic structures for high frequency vacuum devices

doi: 10.13700/j.bh.1001-5965.2015.0209

  • National Key Laboratory of Science and Technology on Vacuum Electronics, Beijing Vacuum Electronics Research Institute, Beijing 100015, China

  • Received Date: 09 Apr 2015
  • Rev Recd Date: 08 May 2015
  • Publish Date: 20 Oct 2015
    Abstract
  • As the key component of vacuum electron device (VED), slow wave structure is a kind of periodic structure, whose dispersion properties can be presented as the sum of an infinite number of space harmonic wave. Each space harmonic wave exits as a dispersion curve with its characteristic. We proposed the idea of the full use of dispersion properties of periodic structures for high frequency vacuum power devices, and carried out the research on folded waveguide (FWG) slow wave structure, which was comparable with MEMS technology. The dispersion curve was analyzed, and was used for different kind of traditional devices including travelling wave tubes (TWTs), backward wave oscillator (BWO) and band-edge oscillators (BO). In addition, over-mode TWTs and TWT harmonic amplifier in THz (THAT) were proposed as novel devices. All the experimental investigation was focused on W-band and frequencies above, and the key technologies and the specifications obtained from these devices were given.

     

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