Abstract
The exact small-signal hot-tube dispersion relation for a thin tape helix traveling-wave tube (TWT) is derived, based on the exact cold-tube dispersion relation by Chernin et al.1. This is an attempt to provide a reliable determination of Pierce's “AC space-charge” parameter $Q$ for a realistic TWT, for which there is no general formulation. We found that in addition to Q, another parameter, q, is necessary to account for the space-charge effects on the circuit mode. This $q$ modifies the circuit mode in Pierce's 3-wave theory of TWT. In a realistic example, the effect of $q$ is equivalent to a modification of the circuit phase velocity by as much as two percent. We will compare our results against commonly used models for Q2, 3.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
