Title :
High-power second harmonic gyro-TWT amplifier
Author :
Wang, Q.S. ; McDermott, D.B. ; Kou, C.S. ; Lin, A.T. ; Chu, K.R. ; Luhmann, N.C., Jr. ; Pretterebner, J.
Author_Institution :
California Univ., Los Angeles, CA, USA
Abstract :
An extremely high power three-section second-harmonic 35 GHz gyro-TWT has been designed with a self-consistent nonlinear simulation code (1). An output power of 530 kW with 21% efficiency, 54 dB gain and 6% bandwidth is predicted. To substantiate the claim that a harmonic gyro-TWT can generate significantly higher output power with better stability than fundamental gyro-TWTs due to the higher beam currents allowed for the weaker harmonic interaction, a proof-of-principle Ku-band experiment is being constructed at UCLA with comparable performance predicted. A single anode 100 kV, 20 A MIG is being built to generate the alpha = upsilon /sub perpendicular to // upsilon /sub ///=1 electron beam with Delta upsilon /sub //// upsilon /sub ///=8%.<>
Keywords :
digital simulation; gyrotrons; harmonics; microwave amplifiers; stability; travelling-wave-tubes; 100 kV; 21 percent; 35 GHz; 530 kW; 54 dB; Ku-band experiment; MM-wave tube; beam currents; gyro-TWT amplifier; high power operation; second harmonic type; self-consistent nonlinear simulation code; stability; three-section design; Gyrotrons; Harmonic analysis; Microwave amplifiers; Simulation; Stability; Traveling wave tubes;
Conference_Titel :
Electron Devices Meeting, 1992. IEDM '92. Technical Digest., International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-0817-4
DOI :
10.1109/IEDM.1992.307343
