Title :
Study of high gain gyrotron traveling wave amplifier
Author :
Chu, K.R. ; Chen, H.Y. ; Hung, C.L. ; Chang, C.H. ; Chen, S.H. ; Yang, T.T. ; Barnett, L.R.
Author_Institution :
Dept. of Phys., Nat. Tsing Hua Univ., Hsinchu, Taiwan
Abstract :
Summary form only given. High gain operation of a millimeter wave gyro-TWT enhances the possibility of spurious oscillations caused by various internal and external feedback mechanisms. Three types of oscillations have been analyzed theoretically with realistic modeling of the interaction structure. It is shown that each type of oscillation exhibits different characteristics. Experiments have been conducted to investigate properties of these oscillations and their stabilization by proper distribution of wall losses. Experimental observations are in reasonable agreement with theoretical predictions. Based on these results, a Ka-band gyro-TWT with 50 dB saturated gain has been designed and is being put together for test.
Keywords :
circuit feedback; gyrotrons; microwave amplifiers; microwave tubes; travelling wave amplifiers; travelling wave tubes; 50 dB; Ka-band gyro-TWT; feedback mechanisms; high gain gyrotron traveling wave amplifier; high gain operation; interaction structure; millimeter wave gyro-TWT; spurious oscillations; stabilization; wall losses; Apertures; Circuit testing; Coaxial components; Frequency; Gain; Gyrotrons; Klystrons; Laboratories; Pulse amplifiers; Q factor;
Conference_Titel :
Plasma Science, 1997. IEEE Conference Record - Abstracts., 1997 IEEE International Conference on
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-3990-8
DOI :
10.1109/PLASMA.1997.604972
