By simulations and experiments we develop a method for generation phase locking of a Ka-band subgigawatt nonstationary relativistic backward-wave oscillator (BWO) with an external radio pulse, the duration of which is considerably greater than the pulse duration of a driven BWO. The level of input power (about 20 kW), which provided phase locking with a total spread of about 1.2 rad, is determined both for the case of competition with an electromagnetic disturbance from a steep front of the beam current and the case of a slow current rise without phase locking in the self-excitation mode. The phase locking effect is achieved with a significant difference in the frequencies of the external radio pulse and driven BWO (about 1 GHz) and hence differs from the amplification mode.

中文翻译：

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外部信号锁相大功率微波振荡器概念的发展

通过模拟和实验，我们开发了一种使用外部无线电脉冲产生 Ka 波段次千兆瓦非平稳相对论后向波振荡器 (BWO) 锁相的方法，其持续时间远大于驱动 BWO 的脉冲持续时间。输入功率水平（约 20 kW）提供了总扩展为约 1.2 弧度的锁相，是为与来自射束电流陡峭前沿的电磁干扰竞争的情况和慢速射束电流的情况确定的。在自激模式下没有锁相的电流上升。锁相效果是通过外部无线电脉冲和驱动 BWO（约 1 GHz）频率的显着差异实现的，因此与放大模式不同。