Title :
Investigation of the saturation properties of gyroamplifiers
Author :
Golomb, David ; Goren, Yehuda ; Ron, Amiram ; Hirshfield, Jay L.
Author_Institution :
Rafael, Haifa, Israel
fDate :
6/1/1988 12:00:00 AM
Abstract :
The saturation properties of a TE0n gyroamplifier are investigated using a particle-in-cell numerical code. The effect of beam velocity spread is analyzed. It is found that for velocity spread of up to 5%, the reduction in efficiency can be compensated by extending the interaction length. A numerical optimization of efficiency enhancement using a tapered magnetic field was demonstrated. A change in the saturation mechanism from phase trapping to thermalization using the suggested tapering was observed
Keywords :
microwave amplifiers; microwave tubes; TE0n; beam velocity spread; compensation; efficiency enhancement; gyroamplifiers; gyrotron; microwave tubes; numerical optimization; particle-in-cell numerical code; phase trapping; saturation properties; tapered magnetic field; thermalization; Analytical models; Computational modeling; Electron beams; Electron traps; Magnetic analysis; Magnetic field measurement; Magnetic fields; Physics; Radio frequency; Tellurium;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
