Effect of plasma and dielectric loading on the slow-wave properties of a traveling-wave tube

Author

Mishra, Ganeswar ; Tripathi, Vipin K. ; Jain, V.K.

Author_Institution

Dept. of Phys., Indian Inst. of Technol., New Delhi, India

Volume

37

Issue

6

fYear

1990

fDate

6/1/1990 12:00:00 AM

Firstpage

1561

Lastpage

1565

Abstract

The dispersion characteristics of a helix-loaded traveling-wave tube (TWT) when a dielectric or plasma is introduced into the system are discussed. The dispersive properties of the dielectric-supported helix waveguide are examined for different geometric parameters of the helix waveguide. The dispersion relation of the helix mode is upshifted by ω_p² cos² φ when plasma is introduced in the device, where ω_p and φ are the electron plasma frequency and the pitch angle of the helix, respectively

Keywords

dielectric-loaded waveguides; dispersion (wave); electromagnetic wave propagation in plasma; travelling-wave-tubes; waveguide theory; TWT; dielectric loading; dielectric-supported helix waveguide; dispersion characteristics; dispersion relation; dispersive properties; electron plasma frequency; geometric parameters; helix mode; helix pitch angles; helix-loaded traveling-wave tube; plasma loading; slow-wave properties; Dielectrics; Dispersion; Electromagnetic coupling; Electromagnetic propagation; Electromagnetic waveguides; Electron beams; Microwave devices; Plasma devices; Plasma properties; Plasma waves;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/16.106258

Filename

106258