Title :
Phase velocity and interaction impedance on slow-wave structures for power traveling-wave tubes
Author :
Lopes, Daniel T. ; Motta, Claudio C.
Author_Institution :
Sao Paulo Univ., Sao Paulo
Abstract :
In this work, some results from a theoretical cold analysis of the ring-bar slow-wave structure are shown. The ring-bar structure is suitable to be used in high-power traveling-wave tubes. Thus, an investigation was done in order to understand the properties of this structure and why it is better than single helices when a TWT is operated at high-voltage levels. The analytic model that best fits the ring-bar is the contra-wound helix that was used.
Keywords :
bars; electric impedance; rings (structures); slow wave structures; TWT; analytic model; contra-wound helix; high-power traveling-wave tubes; interaction impedance; phase velocity; ring-bar slow-wave structure; single helices; theoretical cold analysis; Analytical models; Broadband communication; Circuits; Dielectrics; Dispersion; Electron beams; Electron devices; Frequency synchronization; Impedance; Predictive models; interaction impedance; phase velocity; power traveling-wave tube; ring-bar; slow-wave structure;
Conference_Titel :
Vacuum Electronics Conference, 2008. IVEC 2008. IEEE International
Conference_Location :
Monterey, CA
Print_ISBN :
978-1-4244-1715-5
DOI :
10.1109/IVELEC.2008.4556475
