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

fYear

2002

fDate

2002

Firstpage

286

Lastpage

287

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Vacuum Electronics Conference, 2002. IVEC 2002. Third IEEE International

Print_ISBN

0-7803-7256-5

Type

conf

DOI

10.1109/IVELEC.2002.999382

Filename

999382