Pillared Meander Line Slow Wave Structure for W-band Traveling Wave Tubes

Socuellamos, Juan M. and Letizia, Rosa and Dionisio, Roberto and Paoloni, Claudio (2022) Pillared Meander Line Slow Wave Structure for W-band Traveling Wave Tubes. In: 2021 22nd International Vacuum Electronics Conference, IVEC 2021 :. 2021 22nd International Vacuum Electronics Conference, IVEC 2021 . Institute of Electrical and Electronics Engineers Inc., NLD. ISBN 9781665431187

Abstract

The low beam voltage operation and the simple fabrication of meander lines make them a promising slow wave structure for the production of novel and low-cost traveling wave tubes for W-band satellite communications. However, the poor interaction of planar structures with a cylindrical beam has led to the investigation of alternative meander line configurations that could improve their performance. A novel slow wave structure based on adding pillars to a meander line for improving the interaction with a cylindrical electron beam is described. Simulations of the cold parameters and the large signal behavior are presented in the paper.