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

Volume

34

Issue

3

fYear

2006

fDate

6/1/2006 12:00:00 AM

Firstpage

547

Lastpage

553

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;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2006.875780

Filename

1643274