Title :
Phase stability of a two-stage W-band TE/sub 01/ gyro-traveling-wave-tube with distributed loss and tapered magnetic field
Author :
Lai, Guo-Jun ; Liu, Pu-Kun ; Yin, Rui-Jian
Author_Institution :
Inst. of Electron., Acad. Sinica, Beijing
fDate :
6/1/2006 12:00:00 AM
Abstract :
Phase stability of a W-band TE01 gyro-traveling-wave-tube (Gyro-TWT) with distributed loss and tapered magnetic field is studied in this paper. The phase sensitivity of electron beam voltage, current, and magnetic field is analyzed by using nonlinear theory. The influences on phase stability of important factors such as distributed loss, tapered magnetic field, and input frequency are presented. The results show that relations between phase deviation and electron beam parameters may be expressed by a linear equation. In addition, to maintain phase stability with a maximum accuracy of plusmn20deg, it is necessary to stabilize beam current with an accuracy of plusmn8.3%, beam voltage with an accuracy of plusmn4.65%, and external magnetic fields to within an accuracy of plusmn0.092%
Keywords :
electron beams; gyrotrons; millimetre wave generation; travelling wave tubes; TWT; W-band gyrotraveling-wave-tube; distributed loss; electron beam current; electron beam voltage; linear equation; millimetre wave source; nonlinear theory; phase sensitivity; phase stability; tapered magnetic field; Bandwidth; Electron beams; Magnetic fields; Magnetic losses; Millimeter wave communication; Millimeter wave radar; Nonlinear equations; Stability; Tellurium; Voltage; Distributed loss; gyro-traveling-wave-tube; phase instability; tapered magnetic field;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2006.875780
