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The Small Signal Analysis of a Centered Dielectric-Rod Loaded, Arbitrarily-Shaped Helical Groove Traveling-Wave-Tube

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Abstract

Properties of traveling wave-beam interaction in a centered dielectric-rod loaded, arbitrarily-shaped helical groove slow-wave structure (SWS) are investigated for a thin annular electron beam. The “hot” dispersion equation is obtained by means of the self-consistent field theory, and the small signal analysis is carried out including the effects of the dielectric-rod parameters and the groove shapes. The numerical results show that the bandwidth of the helical groove TWT is expanded by loading dielectric-rod, however, the small-signal gain is reduced; and when the groove shape changes from the swallow-tail shape to the triangle shape, the working frequency increases , while the peak gain decreases.

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Acknowlwdgements

The authors would like to thank the reviewers for their careful reading and the important suggestions for this MS. This work was supported by the National Nature Science Foundation of China (Granted No.60401005 and 60532010).

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Authors and Affiliations

  1. Vacuum Electronics National Laboratory, University of Electronic Science and Technology of China, Chengdu, 610054, China

    Yanyu Wei, Hongtao Liu, Jun He, Yubin Gong, Lingna Yue & Wenxiang Wang

  2. School of Physics, Seoul National University, 171-742, Seoul, South Korea

    Gun-Sik Park

Authors
  1. Yanyu Wei
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  2. Hongtao Liu
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  3. Jun He
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  4. Yubin Gong
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  5. Lingna Yue
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  6. Wenxiang Wang
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  7. Gun-Sik Park
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Correspondence to Yanyu Wei.

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Project supported by the National Nature Science Foundation of China (Granted NO.60401005 and 60532010).

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Wei, Y., Liu, H., He, J. et al. The Small Signal Analysis of a Centered Dielectric-Rod Loaded, Arbitrarily-Shaped Helical Groove Traveling-Wave-Tube. Int J Infrared Milli Waves 28, 1051–1062 (2007). https://doi.org/10.1007/s10762-007-9289-6

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  • DOI: https://doi.org/10.1007/s10762-007-9289-6

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