A BWO based on novel metamaterial slow-wave structure

In this paper, we proposed a novel metamaterial slow wave structure (SWS) for backward wave oscillator (BWO) to develop the high power microwave source. The high frequency characteristics of the SWS are analyzed by the HFSS, the transmission properties and the beam-wave interaction process are simulated in the CST Studio Suit. The simulation results reveal that the BWO based on the novel metamaterial SWS can produce 0.552MW output power and an interaction efficiency of 9.84% at the typical frequency of 31.6GHz.