Title :
Design of a W-band TE01 mode gyro-TWT amplifier with a lossy ceramic-loaded circuit
Author :
Du, C.H. ; Qi, X.B. ; Liu, Pu Kun ; Chang, T.H. ; Xu, S.X. ; Geng, Z.H. ; Hao, B.L. ; Xiao, Liye ; Li, Z.D. ; Shi, S.H. ; Wang Hu ; Liu, G.F.
Author_Institution :
Sch. of Electron. Eng. & Comput. Sci., Peking Univ. (PKU), Beijing, China
Abstract :
A pulse prototype of a W-band TE01 mode gyrotron traveling-wave tube (gyro-TWT) amplifier is designed, and it features high gain and broadband capabilities. Theoretical investigation predicts that, when the magnetic injection gun (MIG) is optimized to generate an electron beam of voltage 70 kV, current 3 A, high pitch factor 1.5, and low axial-velocity spread about 5%, the gyro-TWT amplifier is of excellent performance, including being driven to saturation with input power Pin<;0.4 W, highest efficiency of 32.4%, and the bandwidth of 4.2 GHz with output power exceeding 50 kW.
Keywords :
gyrotrons; microwave amplifiers; microwave tubes; travelling wave tubes; wideband amplifiers; MIG; W-band TE01 mode gyrotron traveling-wave tube amplifier; bandwidth 4.2 GHz; broadband capabilities; current 3 A; electron beam; lossy ceramic-loaded circuit; magnetic injection gun; symmetrical W-band TE01 mode gyroTWT amplifier; voltage 70 kV; Bandwidth; Broadband amplifiers; Couplers; Electron tubes; Gyrotrons; Power amplifiers;
Conference_Titel :
Infrared, Millimeter, and Terahertz Waves (IRMMW-THz), 2013 38th International Conference on
Conference_Location :
Mainz
DOI :
10.1109/IRMMW-THz.2013.6665409
