Open AccessA wave-beam interaction theory for folded-waveguide traveling wave tubes
Author(s) -
Hairong Yin,
Jin Xu,
Yu Ling-Na,
Yubing Gong,
Yanyu Wei
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.61.244106
Subject(s) - physics , beam (structure) , waveguide , optics , traveling wave tube , nonlinear system , power (physics) , mechanics , quantum mechanics , optoelectronics , amplifier , cmos
Based on velocity-modulating model, a nonlinear wave-beam interaction theory for folded-waveguide traveling wave tubes is developed. In this theory, the continuing beam is treated as discrete macro-particles with different initial phases. Then beam-wave interaction and energy exchange are analyzed at each crossing point between beam-tunnel and wave-tunnel. Compared with PIC result, the error of output power predicted by this model is within 10%, and the error of saturated length is within 15%. The results of this model are significant for designing folded-waveguide traveling wave tubes.