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An E-plane loaded sine waveguide for G-band traveling wave tube

Author

Listed:
  • Zheng Chang
  • Zhigang Lu
  • Peng Gao
  • Jingrui Duan
  • Xiaofan Gui
  • Zhenting Zheng
  • Zhanliang Wang
  • Shaomeng Wang
  • Yubin Gong

Abstract

A new slow wave structure (SWS), named E-plane loaded sine waveguide (EPLSW) SWS is proposed for the development of G-band traveling wave tubes (TWTs). The structure, derived from the sine waveguide (SW) SWS, features staggered rectangular gratings on the two E-planes, intersecting with the sine-shaped gratings. The natural electron beam tunnel lies between these gratings. The EPLSW-SWS offers improved characteristics compared to the conventional SW-SWS. High-frequency simulation studies reveal that the passband of the EPLSW-SWS extends by more than 33 GHz over the SW-SWS under identical dispersion conditions. Additionally, the interaction impedance of EPLSW-SWS surpasses that of the SW-SWS in the frequency range of 195–255 GHz. Further analysis through particle-in-cell (PIC) results presents that when operating at 19.5 kV and 145 mA for the sheet beam current, it attains a maximum saturated power of 132.7W and a 3 dB bandwidth exceeding 50 GHz.

Suggested Citation

  • Zheng Chang & Zhigang Lu & Peng Gao & Jingrui Duan & Xiaofan Gui & Zhenting Zheng & Zhanliang Wang & Shaomeng Wang & Yubin Gong, 2024. "An E-plane loaded sine waveguide for G-band traveling wave tube," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 38(11), pages 1209-1219, July.
    • Handle: RePEc:taf:tewaxx:v:38:y:2024:i:11:p:1209-1219
    DOI: 10.1080/09205071.2024.2363402
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