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One-dimensional photonic crystal-loaded strategy for traveling wave tubes

Author

Listed:
  • Li Qiu
  • Gaoli Xiang
  • Haifeng Chen
  • Jingrui Duan
  • Haihua Gong
  • Zhigang Lu
  • Yanyu Wei

Abstract

Photonic crystals (PCs) are widely used in mode competition suppression in traveling wave tubes (TWTs). In this paper, a one-dimensional (1D) PC-loaded folded waveguide (FW) TWT called PCFW-TWT is designed and simulated. The transmission characteristics of the PCFW-TWT show the frequency-selective properties of the 1D PC. Particle-in-cell (PIC) simulation results show that the oscillation caused by high-order modes in the conventional FW-TWT is well suppressed in the PCFW-TWT. Meanwhile, compared with the two-dimensional (2D) PC, the 1D PC based on alternating dielectrics is easier to fabricate, which is more achievable in practical applications.

Suggested Citation

  • Li Qiu & Gaoli Xiang & Haifeng Chen & Jingrui Duan & Haihua Gong & Zhigang Lu & Yanyu Wei, 2025. "One-dimensional photonic crystal-loaded strategy for traveling wave tubes," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 39(6), pages 732-742, April.
    • Handle: RePEc:taf:tewaxx:v:39:y:2025:i:6:p:732-742
    DOI: 10.1080/09205071.2025.2475921
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