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

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Date
1990
Authors
Mishra, Ganeswar
Tripathi, Vipin K
Jain, V K
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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 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
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helix-loaded traveling-wave tube (TWT)
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