Title :
Characteristics of a stable 200 kW second-harmonic gyro-TWT amplifier
Author :
Wang, Q.S. ; McDermott, D.B. ; Luhmann, N.C., Jr.
Author_Institution :
Dept. of Appl. Sci., California Univ., Davis, CA, USA
Abstract :
The experimental results are reported for a stable second-harmonic gyrotron traveling-wave amplifier, which generated a record breaking 207 kW output power based on the principle that the weaker harmonic interactions are more stable to spontaneous oscillations than the fundamental, and therefore, more capable of generating higher output power. The Ku-band amplifier utilized an 80 kV, 20 A, v⊥/v||=1.1 MIG electron beam and displayed an efficiency of 12.9%, an output phase variation of 10°/kV, a saturated bandwidth of 2.1%, a large-signal gain of 16 dB, a detuned small-signal gain of 38 dB, and was completely (zero-drive) stable
Keywords :
gyrotrons; microwave amplifiers; stability; travelling wave amplifiers; travelling wave tubes; 12.9 percent; 16 dB; 20 A; 200 to 207 kW; 38 dB; 80 kV; Ku-band amplifier; gyrotron traveling-wave amplifier; second-harmonic gyro-TWT amplifier; stable operation; Electron beams; Gain; Gyrotrons; High power amplifiers; Power amplifiers; Power generation; Power system harmonics; Radiofrequency amplifiers; Stability; Tellurium;
Conference_Titel :
Electron Devices Meeting, 1995. IEDM '95., International
Conference_Location :
Washington, DC
Print_ISBN :
0-7803-2700-4
DOI :
10.1109/IEDM.1995.499185
