Title :
Improvements in Broadband Performance of Mini-TWTs at e2v technologies
Author :
Ghosh, Tushar K. ; Challis, Anthony J. ; Tokeley, Anthony ; Rushbrook, Kevin ; Poston, Ian ; Matthews, Richard ; Jacob, Alan ; Bowler, Darrin
Author_Institution :
e2v Technol. Ltd., Chelmsford
Abstract :
Positive phase velocity tapering has been implemented to improve the broadband performance of helix traveling wave tubes (TWTs). The slow wave structures of a mini-TWT and a midi-TWT have been optimized using this technique. A comparison between the actual performances of the tubes with uniform and positive tapered pitch shows a significant improvement in efficiency and power at the higher end of the frequency band of operation in the later case.
Keywords :
slow wave structures; frequency band; helix traveling wave tubes; midi-TWT; mini-TWT; positive phase velocity tapering; positive tapered pitch; slow wave structures; uniform tapered pitch; Costs; Impedance; Jacobian matrices; Microwave devices; Power generation; Power system harmonics; Radio frequency; Signal design; Testing; Thermal stability; broadband performance; efficiency enhancement; positive taper; travelling wave tube;
Conference_Titel :
Vacuum Electronics Conference, 2007. IVEC '07. IEEE International
Conference_Location :
Kitakyushu
Print_ISBN :
1-4244-0633-1
DOI :
10.1109/IVELEC.2007.4283202
