Open AccessDesign and experiment of a Kα-band TE01 modefundmetal wave gyroklystron amplifier
Author(s) -
Xu Yong,
Yanhong Luo,
Xiong Cai-Dong,
Hongfu Li,
Deng Xue,
Youlei Pu,
Hui Wang,
Jianxun Wang,
Ran Yan
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.048403
Subject(s) - amplifier , klystron , physics , bandwidth (computing) , optics , full width at half maximum , rf power amplifier , cathode ray , power (physics) , materials science , beam (structure) , optoelectronics , electron , telecommunications , computer science , nuclear physics , cmos , quantum mechanics
Based on the analyses and the calculations of the gyroklystron amplifiers self-consistent nonlinear theory, a scheme of Kα-band, TE01 mode, four-cavity fundmetal wave gyroklystron is designed.At the same time, a gyroklystron amplifier is made and tested. The hot test experiment shows that the gyroklystron amplifier can produce 245 kW peak output power, and 3 kW average power at a 35% efficiency and saturated gain of 36.1 dB at central frequency 34 GHz, when using 60 W driving power, and a 70 kV, 10 A annular electron beam in a magnetic field of 1.31 T. The full width half maximum (FWHM) bandwidth is higher than 280 MHz. The amplifier is zero-drive stable. Experimental results are found to be in excellent agreement with theoretical predictions.