A high performance continuous-wave (CW) backward wave oscillator (BWO) with planar slow wave structure (SWS) and sheet electron beam in Y-band is presented in this paper. The mode selection is discussed by studying the dispersion curve of SWSs, distributions of the electric field, and particle-in-cell simulation results, showing that the designed BWO operates in the fundamental mode TM11. The planar SWSs are fabricated by using the UV-LIGA technology with the processing error less than 0.003 mm. The electron gun can provide the 2.5 mm × 0.14 mm sheet electron beam with maximum current density of 57 A/cm2 at the CW mode. Experimental results show that the developed BWO can operate in the fundamental mode TM11 and generate the state-of-art output power of 182 mW at the frequency of 0.3426 THz with a large frequency tuning range from 0.318 THz to 0.359 THz.
展开▼
机译：本文提出了一种具有平面慢波结构（SWS）和Y波段薄电子束的高性能连续波（CW）反向波振荡器（BWO）。通过研究SWS的色散曲线，电场分布以及单元内粒子模拟结果，讨论了模式选择，表明所设计的BWO在基本模式TM11下运行。平面SWS通过使用UV-LIGA技术制造，加工误差小于0.003mm。该电子枪在连续波模式下可提供2.5 mm×0.14 mm的片状电子束，最大电流密度为57 A / cm 2 。实验结果表明，所开发的BWO可以在基本模式TM11下运行，并在0.3426 THz的频率下产生最先进的输出功率182 mW，并且在0.318 THz至0.359 THz的较大频率范围内进行调谐。
展开▼
