Title :
Numerical simulation study of a Ka-band gyro-TWT
Author :
Hui, Wang ; Hongfu, Li ; Jiayin, Li ; Yong, Luo ; Jianxun, Wang
Author_Institution :
Inst. of High Energy Electron., UEST of China, Chengdu
Abstract :
By studying the absolute instability, the gyrotron backward wave oscillation and the electron beam-wave interaction, the stability of amplifier and the suppression of spurious oscillations are discussed. The simulation results of Ka-band TE01 gyrotron traveling wave amplifier are given. The PIC simulation results show that this amplifier can generate 225 kW at 35 GHz with 23% efficiency and 36 dB gain and 8.2 % bandwidth. A coaxial input coupler and Dolph-Chebychev output wave-guide meeting the design requirement are also attained.
Keywords :
backward wave oscillators; electron beams; gyrotrons; millimetre wave amplifiers; numerical analysis; stability; travelling wave amplifiers; Dolph-Chebychev output waveguide; Ka-band Gyro-TWT; amplifier stability; coaxial input coupler; efficiency 23 percent; electron beam-wave interaction; frequency 35 GHz; gain 36 dB; gyrotron backward wave oscillation; numerical simulation study; power 225 kW; traveling wave amplifier; Bandwidth; Broadband amplifiers; Coaxial components; Computational modeling; Design optimization; Frequency; Gyrotrons; Numerical simulation; Power amplifiers; Power generation;
Conference_Titel :
Infrared and Millimeter Waves, 2007 and the 2007 15th International Conference on Terahertz Electronics. IRMMW-THz. Joint 32nd International Conference on
Conference_Location :
Cardiff
Print_ISBN :
978-1-4244-1438-3
DOI :
10.1109/ICIMW.2007.4516563
