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A Tapered Ridge-loaded Folded Waveguide Slow-wave Structure for Millimeter-wave Traveling-wave Tube

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Abstract

This paper presents a tapered ridge-loaded folded waveguide (FWG) slow-wave structure (SWS) for broadband and high power millimeter wave traveling wave tube (TWT). The radio-frequency characteristics including dispersion properties, interaction impedance, S-parameters are analyzed. And based upon these results, the nonlinear large signal performance of the tapered ridge-loaded folded waveguide TWT working in W-band is simulated by 3-D particle-in-cell code. In the same ridge length, the tapered FWG has lower reflection and radio-frequency loss than the normal ridge-loaded FWG. Besides, the tapered ridge-loaded FWG TWT also has higher electron efficiency and larger bandwidth, which is more suitable for millimeter-wave TWT.

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Acknowledgements

This research was supported partly by the Fundamental Research Funds for the Central Universities under Grant no.ZYGX2009Z003, and in part by the National Natural Science Foundation of China. (Grant No. 60971038).

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Authors and Affiliations

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

    Guo Guo, Yanyu Wei, Lingna Yue, Yubin Gong, Xiong Xu, Guoqing Zhao & Wenxiang Wang

  2. Institute of Electronics, Chinese Academy of Sciences, Beijing, 100190, China

    Jun He

  3. Department of Physics and Astronomy, Seoul National University, Seoul, 151-747, Korea

    Gun-Sik Park

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  1. Guo Guo
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  2. Yanyu Wei
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  3. Lingna Yue
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  4. Yubin Gong
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  5. Xiong Xu
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  6. Jun He
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  7. Guoqing Zhao
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  8. Wenxiang Wang
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  9. Gun-Sik Park
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Correspondence to Yanyu Wei.

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Guo, G., Wei, Y., Yue, L. et al. A Tapered Ridge-loaded Folded Waveguide Slow-wave Structure for Millimeter-wave Traveling-wave Tube. J Infrared Milli Terahz Waves 33, 131–140 (2012). https://doi.org/10.1007/s10762-011-9852-z

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  • DOI: https://doi.org/10.1007/s10762-011-9852-z

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