Open AccessResearch on non-linear beam-wave interaction of W-band gyro-TWT with helical waveguide
Author(s) -
Xue Zhi-Hao,
Pu-Kun Liu,
Cheng Du,
Zheng-Di Li
Publication year - 2012
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.61.170201
Subject(s) - bandwidth (computing) , microwave , physics , optics , traveling wave tube , waveguide , cathode ray , beam (structure) , radar , transmitter , electron , amplifier , telecommunications , computer science , channel (broadcasting) , quantum mechanics
Gyro-TWT is one of the most promising candidates for the application of the transmitter microwave source of the next-generation imaging radar; meanwhile, it plays an important role in national security. Gyro-TWT with helical waveguide is capable of generating broad-bandwidth radiation, as well as high stable ability. In this paper, we derive the dispersion equation of helical waveguide and the non-linear theory of calculating the beam-wave interaction. Numerical stimulation results accord with the experimental results. We design a W-band gyro-TWT operating at a 80 keV, 5 A electron beam, which can produce an output power of 142 kW, with 3 dB bandwidth 4.5%, cantral frequency 95 GHz and saturation gain 52 dB. Finally, we calculate the effect of variation of voltage and current on the output performance of gyro-TWT with helical waveguide.