A Novel Waveguide-loaded Scheme for Oscillation Suppression of Sheet Beam Traveling-wave Tube

Oscillations are known to be one of the most critical problem in the design of high-power traveling-wave tubes (TWTs). In this paper, a novel waveguide-loaded scheme for high order mode oscillation suppression of sheet beam traveling-wave tube is proposed. By selected loading the transverse staggered waveguides on both sides of the interaction circuit, the high-order oscillation mode is significantly suppressed. The simulation demonstrates the possibility of this novel scheme for sheet beam TWT design in G band. This scheme offers a new approach to solve oscillation problems of TWTs.