Title :
Gain-frequency response of nearby waveguide modes in vane-loaded gyro-TWT
Author :
Singh, G. ; Kartikeyan, M.V. ; Basu, B.N.
Author_Institution :
Dept. of Electron. & Commun. Eng., Seoul Nat. Univ.
fDate :
6/1/2006 12:00:00 AM
Abstract :
In this paper, the behavior of a gyro-traveling wave tube (gyro-TWT) amplifier, in which an axis-encircling electron beam synchronously interacts with the azimuthal modes of the vane-loaded cylindrical waveguide interaction structure, has been analyzed. The dispersion characteristics and gain-frequency response of the nearby waveguide modes (TE01, TE21, and TE41) for the vane-loaded gyro-TWT amplifier have been presented. The gain-frequency response of the device has been studied for both the small-orbit and large-orbit configurations. It has been observed that the TE41 mode of the device is well separated on the frequency scale for both these configurations. In addition, it has higher device gain in the large-orbit configuration when compared with the same obtained for the TE01 and TE21 modes
Keywords :
circular waveguides; dispersion relations; electron beams; gyrotrons; travelling wave amplifiers; travelling wave tubes; axis-encircling electron beam; azimuthal modes; cylindrical waveguide; dispersion characteristics; gain-frequency response; gyrotraveling wave tube amplifier; vane-loaded gyroTWT; waveguide modes; Broadband amplifiers; Electron beams; Frequency; High power amplifiers; Magnetic fields; Microwave amplifiers; Microwave devices; Millimeter wave communication; Millimeter wave radar; Millimeter wave technology; Azimuthal harmonics; gyro-traveling wave tube amplifiers (gyro-TWTs); gyrotrons; microwave/millimeter-wave sources;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2006.875781
