By Topic

Linear Analysis of Dielectric-Lined Azimuthally Periodic Circular Waveguide for TWT

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

7 Author(s)
Yang Liu ; Nat. Key Lab. of High-Power Vacuum Electron., Univ. of Electron. Sci. & Technol. of China, Chengdu, China ; Yanyu Wei ; Yubin Gong ; Huarong Gong
more authors

The electron beam interaction in a novel slow-wave structure (SWS) called dielectric-lined azimuthally periodic circular waveguide (DLAP-CW) is analyzed in a linear frame. Moreover, the linear gain characteristics of the DLAP-CW are obtained by the self-consistent relativistic field theory. Analytical solutions for the hot dispersion characteristics are derived, and the complicated dispersion equations have been numerically solved with MATLAB. The small-signal growth rate is calculated for dimensions of the improved SWS and the parameters of the electron beam. It is shown that selecting the appropriate thickness and location of the metal rods increases the small-signal gain (dielectric constant held fixed). In addition, the gain of the DLAP-CW increases as the beam current increases, and the beam voltage not obviously influences the small-signal gain. Furthermore, a comparison of the small-signal gain of this structure with a conventional dielectric-lined circular waveguide (DL-CW) is made, and the results validate that the novel SWS has an advantage over the DL-CW on the electron efficiency, potentially resulting in a higher gain traveling-wave-tube circuit.

Published in:

Plasma Science, IEEE Transactions on  (Volume:39 ,  Issue: 8 )