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Sine double ridged waveguide (SRWG) offer advantages such as low transmission loss, minimal reflection, and ease of fabrication, making it well-suited as slow-wave structures for millimeter-wave, submillimeter-wave, and terahertz frequency bands. To meet the demand for high-power, broadband terahertz radiation sources in the terahertz domain, this study designed a 340 GHz backward wave oscillator (BWO) based on a sine double ridged waveguide. Particle-in-cell (PIC) simulation results at 25 mA beam current demonstrate that by adjusting the voltage within the 18–23 kV range, output power exceeding 5W can be achieved across the operating frequency band of 326–351 GHz.

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Investigation of a 340 GHz BWO Based on Sine Double Ridge Waveguide

  • 会议论文

  • 发表日期：

    2026年

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  • Boning Gao,
  • Lingna Yue,
  • Jin Xu,
  • Jinchi Cai,
  • Pingcheng Yin,
  • Jian Zhang,
  • Huifen Shi,
  • Yinghui Liu,
  • Yanyu Wei

摘要

Sine double ridged waveguide (SRWG) offer advantages such as low transmission loss, minimal reflection, and ease of fabrication, making it well-suited as slow-wave structures for millimeter-wave, submillimeter-wave, and terahertz frequency bands. To meet the demand for high-power, broadband terahertz radiation sources in the terahertz domain, this study designed a 340 GHz backward wave oscillator (BWO) based on a sine double ridged waveguide. Particle-in-cell (PIC) simulation results at 25 mA beam current demonstrate that by adjusting the voltage within the 18–23 kV range, output power exceeding 5W can be achieved across the operating frequency band of 326–351 GHz.