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.

Volume

34

Issue

3

fYear

2006

fDate

6/1/2006 12:00:00 AM

Firstpage

554

Lastpage

558

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;

fLanguage

English

Journal_Title

Plasma Science, IEEE Transactions on

Publisher

ieee

ISSN

0093-3813

Type

jour

DOI

10.1109/TPS.2006.875781

Filename

1643275