Operational Characteristics of Helical Structure Over Dielectric Tube in a Metal Casing

Abstract

A new configuration of TWT is proposed in which wire helix is wound on a dielectric tube and enveloped by a hollow electron beam. The dispersion equation has been obtained and impedance has been calculated. This structure is effective in providing dispersion shaping with reduced dielectric loading as compared with the existing TWT model. Some aspects of high power handling of the system have been discussed.

Indexing Terms:

• Helical Structure
• Impedance of Helix
• Dispersion Features