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

fYear

1995

Firstpage

231

Lastpage

234

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices Meeting, 1995. IEDM '95., International

Conference_Location

Washington, DC

ISSN

0163-1918

Print_ISBN

0-7803-2700-4

Type

conf

DOI

10.1109/IEDM.1995.499185

Filename

499185