Research on High-efficiency and Wide-band Traveling-wave Tube at W-band

Traveling-wave tube has attracted wide attention on the research and application of millimeter-wave technology. However, current research shows that the performance of millimeter-wave traveling-wave tubes still needs to be further enhance. This paper introduced the research work of our lab on high-efficiency and wide-band traveling-wave tube at W-band. Novel high-efficiency non-circular-bend folded-waveguide traveling-wave tube and wide-band double-mode staggered double-vane traveling-wave tube have been designed and optimized respectively. Research results show that electron efficiency can be increased up to 10 % and working bandwidth can cover 20 GHz at W-band. This paper further shows the performance potential of the traveling-wave tube in millimeter-wave band.