中文摘要：

行波管再生反馈振荡器是一种新型太赫兹源器件.基于560GHz折叠波导慢波结构,对此类器件的工作原理与物理模型进行分析阐述.采用非线性互作用模型对行波管再生反馈振荡器进行详细振荡过程模拟.模拟结果显示,在550—600GHz频率下可以获得稳态振荡频率,并在560GHz处获得最大单频输出功率.结果同时表明,振荡频率随电子注电压发生跳变现象,并简要分析了其产生原因.

英文摘要：

Traveling wave tube（TWT） regenerative feedback oscillators have been demonstrated to be very attractive terahertz source devices.The principle and the physical model of this kind of device are analyzed.To see more detailed oscillation process,a 560 GHz folded waveguide TWT oscillator is presented.The results show steady-state oscillation frequencies exist between 550—600 GHz,and a single-frequency oscillation is found near 560 GHz.An oscillation frequency step-tuning behavior with the continuous variation of the beam voltage is discussed.