Title :
Design optimization of W-band CW TWT for improving overall efficiency
Author :
Ji Chen ; Yinfu Hu ; Qiang Zhang ; Jun Cai ; Jinjun Feng
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Vacuum Electron., Beijing Vacuum Electron. Res. Inst., Beijing, China
Abstract :
According to the original design of 30W level W-band folded waveguide CW traveling wave tube (TWT), a step-tapering structure was at the end of the uniform interaction circuit to improve the electron efficiency. Compared two kinds of tapering circuit, the results indicate that both circuits could achieve over 40W power at 91GHz~97GHz. The electron efficiency could be improved from 3% to 4%. A collector design is obtained to improve overall efficiency further, and simulation shows top overall efficiency is 23.6%.
Keywords :
optimisation; travelling wave tubes; waveguides; W-band CW TWT; W-band folded waveguide; design optimization; electron efficiency; frequency 91 GHz to 97 GHz; power 30 W; step tapering structure; traveling wave tube; uniform interaction circuit; Electrodes; Electron beams; Frequency response; Power generation; Prototypes; Simulation; Trajectory; TWT; W-band; efficiency enhance;
Conference_Titel :
Vacuum Electronics Conference (IVEC), 2015 IEEE International
Conference_Location :
Beijing
Print_ISBN :
978-1-4799-7109-1
DOI :
10.1109/IVEC.2015.7223985
