Title :
Linear theory of a plasma loaded, helix type, slow wave amplifier
Author :
Kobayashi, Saturo ; Antonsen, Thomas M., Jr. ; Nusinovich, Gregory S.
Author_Institution :
Inst. for Plasma Res., Maryland Univ., College Park, MD, USA
fDate :
6/1/1998 12:00:00 AM
Abstract :
The linear theory of a plasma loaded helix type traveling wave tube amplifier (TWTA) is considered. The role of plasma on the gain and the degree of concentration of the high frequency fields in the region of the plasma is studied. Strong gain enhancements are observed for frequencies in which hybrid plasma-slow waves are formed. Use of plasma allows for strong interaction even if the beam is displaced from the immediate vicinity of the structure. This latter effect could allow for the development of higher power amplifiers with larger cross-sectional areas
Keywords :
microwave power amplifiers; slow wave structures; travelling wave amplifiers; gain; high frequency fields; higher power amplifiers cross-sectional areas; hybrid plasma-slow waves; linear theory; plasma loaded helix type slow wave amplifier; traveling wave tube amplifier; Dielectrics; Electromagnetic coupling; Electron beams; Frequency; Particle beams; Plasma confinement; Plasma devices; Plasma sheaths; Plasma sources; Plasma waves;
Journal_Title :
Plasma Science, IEEE Transactions on
