Title :
A Comparison of Linearity and Efficiency in Conventional and Transverse TWT Amplifiers
Author :
Chernin, David ; Antonsen, Thomas M. ; Levush, Baruch ; Cooke, Simon J. ; Manheimer, W.
Author_Institution :
Sci. Applications Int. Corp., McLean, VA
Abstract :
Traveling-wave tubes (TWTs) based on the transverse interaction between an electron beam and a circularly polarized circuit wave were investigated starting in the 1960s. Small-signal theory based on a pencil beam suggested that these devices would have high efficiency and good linearity. Further analysis showed that the effect of a finite beam radius would limit these advantages. We present results from a short numerical study using a large signal code that compared the predicted performance of a conventional TWT with that of a transverse TWT of the same dc beam power. We find that the transverse TWT retains its advantages under large signal conditions
Keywords :
numerical analysis; travelling wave amplifiers; TWT amplifiers; dc beam power; intermodulation products; large signal code; transverse interaction; traveling-wave tubes; Circuits; Consumer electronics; Electron beams; Electron tubes; Helium; Laboratories; Linearity; Polarization; Radio frequency; Signal analysis; Efficiency; intermodulation products; linearity; spent beam; transverse interaction; traveling-wave tube (TWT);
Journal_Title :
Electron Devices, IEEE Transactions on
DOI :
10.1109/TED.2006.888756
