Title :
Phase velocity and interaction impedance measurements on slow-wave structures for high-power traveling-wave tubes
Author :
Lopes, Daniel T. ; Motta, Claudio C.
Author_Institution :
Univ. of Sao Paulo, Sao Paulo
Abstract :
In this work some results of phase velocity and interaction impedance measurements made on a ring-bar slow-wave structure for a high-power traveling-wave tube are presented and discussed. The measurements were in range from 7 to 12 GHz. The experimental results obtained were compared to an analytical cold model based on the contra-wound helix theory and to 3D simulations done with a commercial full 3D eigenvalue solver software.
Keywords :
electric impedance measurement; travelling wave tubes; 3D eigenvalue solver software; 3D simulation; contra-wound helix theory; interaction impedance measurement; pase velocity; slow wave structure; traveling wave tube; Analytical models; Computational modeling; Dispersion; Frequency measurement; Impedance measurement; Microwave measurements; Performance evaluation; Phase measurement; Predictive models; Velocity measurement; high-power traveling-wave tube; interaction impedance; phase velocity; 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.2008.4556446
