Title :
The three-dimensional TWT multi-signal nonlinear beam-wave interaction
Author :
Li, J.Q. ; Mo, Y.L. ; Zhang, Y.
Author_Institution :
Inst. of High Energy Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
Based upon the model of Rowe´s transmission-line equivalent circuit, using the maximal common submultiple fundamental frequency, a 3-dimensional (3D) multi-signal nonlinear model of beam-wave interaction in a helix traveling-wave tube (TWT) has been obtained. The 3D model describes 2D RF fields, 3D AC space-charge fields and 3D AC electron motion. This model has been implemented in the HTWT3D code, which can calculate any number of simultaneous signals, including input signals and their intermodulation components. Results from the HTWT3D code are shown to compare with measurements of output powers vs. driver power.
Keywords :
electrodynamics; electron beams; modelling; space charge; transmission line theory; travelling wave tubes; 2D RF fields; 3D AC electron motion; 3D AC space-charge fields; 3D multi-signal nonlinear beam-wave interaction; 3D multi-signal nonlinear model; HTWT3D code; beam-wave interaction model; helix TWT; helix traveling-wave tube; intermodulation components; transmission-line equivalent circuit; Artificial satellites; Communication systems; Electron beams; Equivalent circuits; Optical modulation; Power generation; Power system modeling; Radio frequency; Space charge; Transmission lines;
Conference_Titel :
Microwave and Millimeter Wave Technology, 2002. Proceedings. ICMMT 2002. 2002 3rd International Conference on
Print_ISBN :
0-7803-7486-X
DOI :
10.1109/ICMMT.2002.1187641
