Multimode analysis of a W-band gyroklystron amplifier

Author

Swati, M.V. ; Chauhan, M.S. ; Jain, P.K.

Author_Institution

Dept. of Electron. Eng., Indian Inst. of Technol. (BHU), Varanasi, India

fYear

2014

fDate

15-17 Dec. 2014

Firstpage

308

Lastpage

311

Abstract

The multimode beam wave interaction behavior in a three-cavity, W-band gyroklystron amplifier is studied using nonlinear, time-dependent, multimode analysis. The gyroklystron amplifier operates in the fundamental harmonic, higher order TE₀₂₁ mode. The presented theory is used to study the concept of mode competition. A peak output power of around 330 kW at 93.2 GHz, an electronic efficiency of 25%, and a saturated gain of 22.8 dB is obtained with a 75 kV, 17 A gyrating electron beam. The results obtained are found to be in good agreement with the time-independent single-mode analysis and the reported experimental results.

Keywords

amplifiers; gyrotrons; klystrons; millimetre wave amplifiers; millimetre wave tubes; TE₀₂₁ mode; W-band gyroklystron amplifier; efficiency 25 percent; frequency 93.2 GHz; fundamental harmonic operation; gain 22.8 dB; gyrating electron beam; multimode beam wave interaction behavior; nonlinear time-dependent multimode analysis; three-cavity W-band gyroklystron amplifier; time-independent single-mode analysis; voltage 75 kV; Cavity resonators; Gain; Gyrotrons; Klystrons; Oscillators; Power amplifiers; Power generation; Fast-wave device; microwave tube; millimeter wave high power amplifier; multimode analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and RF Conference (IMaRC), 2014 IEEE International

Conference_Location

Bangalore

Type

conf

DOI

10.1109/IMaRC.2014.7039048

Filename

7039048