Backward wave oscillator (BWO)

The invention discloses a backward wave oscillator (BWO). Compared with a conventional backward-wave oscillator, the BWO has the advantages that a backward-wave amplification structure is added on thebasis of a backward-wave high-frequency structure, the interaction efficiency of electrons and electromagnetic waves is improved under the condition that voltage and current are not increased, and the final output power of the BWO is improved. 本发明公开了返波振荡器，与常规的返波振荡器相比，在返波高频结构的基础上，增加了一段返波放大结构，在不增加电压、电流的情况下，电子与电磁波互作用效率提高，使返波振荡器最终输出功率得到提高。