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With the development of satellite communication and deep space exploration towards longer transmission distance. For the purpose of satisfying the significant demand for kilowatt-level traveling wave tubes (TWTs) in the next-generation millimeter-wave communication and electronic countermeasure systems in the future, this paper presents the design of the slow-wave structure(SWS) for a K-band TWT operating in continuous wave (CW). The SWS utilizes a modified staggered double grating structure (MSDGS). Combining with structural parameter optimization and beam-wave interaction simulation, under the operating condition of 18 kV and 1 A, this TWT achieves a working bandwidth over 3 GHz. Across the full band, the output power exceeds 2300 W (peaking at 4500 W), the gain is greater than 20 dB, and the electronic efficiency surpasses 12.78%. This design lays the foundation for the further development of such devices.

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Design and Simulation of K-Band 2kW-Level Low-Voltage Sheet-Beam Traveling Wave Tube with Continuous Wave Operation

  • 会议论文

  • 发表日期：

    2026年

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  • Qiuhan Wang,
  • Zhenxing Li,
  • Wei Yang,
  • Jian Zhang,
  • PencCheng Yin,
  • Boning Gao,
  • Zhaoxiang Tan,
  • Jiashuo Liu,
  • Xinke Zhang,
  • Jin Xu,
  • Yong Xu,
  • Hairong Yin,
  • Lingna Yue,
  • Wenxiang Wang,
  • Jinchi Cai,
  • Yanyu Wei

摘要

With the development of satellite communication and deep space exploration towards longer transmission distance. For the purpose of satisfying the significant demand for kilowatt-level traveling wave tubes (TWTs) in the next-generation millimeter-wave communication and electronic countermeasure systems in the future, this paper presents the design of the slow-wave structure(SWS) for a K-band TWT operating in continuous wave (CW). The SWS utilizes a modified staggered double grating structure (MSDGS). Combining with structural parameter optimization and beam-wave interaction simulation, under the operating condition of 18 kV and 1 A, this TWT achieves a working bandwidth over 3 GHz. Across the full band, the output power exceeds 2300 W (peaking at 4500 W), the gain is greater than 20 dB, and the electronic efficiency surpasses 12.78%. This design lays the foundation for the further development of such devices.