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

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3 Author(s)
Mishra, G. ; Dept. of Phys., Indian Inst. of Technol., New Delhi, India ; Tripathi, V.K. ; Jain, V.K.

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 ωp2 cos2 φ when plasma is introduced in the device, where ωp and φ are the electron plasma frequency and the pitch angle of the helix, respectively

Published in:

Electron Devices, IEEE Transactions on  (Volume:37 ,  Issue: 6 )

Date of Publication:

Jun 1990

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