Title :
Effect of the beam parameters on the non-linear performance in broadband helix TWTs
Author :
Jenkins, R.O. ; Carter, R.G.
Author_Institution :
Dept. of Eng., Lancaster Univ., UK
Abstract :
Research has been carried out which investigated the effect of the beam parameters on the nonlinear performance of a helix TWT across a specified broad frequency band. The beam parameters include the beam voltage (at constant DC power) and the beam radius. A large signal (1D and 2.5D) computer program was used for this purpose, which models the interaction processes in a helix TWT and generates transfer characteristics for a given design at specified frequency values. An intermodulation analysis software (IMAL 2-0) was also used to compute the nonlinear performance for multi-carrier signals.
Keywords :
intermodulation distortion; microwave amplifiers; slow wave structures; space charge waves; travelling wave amplifiers; wideband amplifiers; 10.7 to 12.75 GHz; 4.76 to 5.24 kV; beam parameters; beam radius; beam voltage; broadband helix TWT; carrier-to-intermodulation noise ratio; constant DC power; helix slow-wave structure; intermodulation analysis software; large signal computer program; multicarrier signals; nonlinear performance; slow-space charge wave; transfer characteristics; Bandwidth; Design optimization; Displays; Electron beams; Electron tubes; Frequency synchronization; Linearity; Power generation; Radio frequency; Voltage;
Conference_Titel :
Vacuum Electronics Conference, 2002. IVEC 2002. Third IEEE International
Print_ISBN :
0-7803-7256-5
DOI :
10.1109/IVELEC.2002.999382
