Abstract

A 140GHz traveling-wave tube (TWT) by utilizing the sine waveguide slow wave structure (SWS) combined with the electron sheet beam is designed to develop the high power millimeter-wave radiation source. The investigation results reveal that this TWT can produce over 30W output power in the range from 135GHz to 151GHz. The maximum output power reaches 68.63W at 138GHz, which corresponds to a gain of 35.36dB and an interaction efficiency of 5.94%.

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