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Analytical Design Method for Corrugated Rectangular Waveguide SWS THz Vacuum Tubes

Research output: Contribution to journalJournal article

Published

Journal publication date2010
JournalJournal of Electromagnetic Waves and Applications
Journal number17-18
Volume24
Number of pages16
Pages2479-2494
Original languageEnglish

Abstract

The corrugated rectangular waveguide is particularly suitable for microfabrication of slow-wave structures for vacuum amplifiers in THz frequency range. An analytical model for the corrugated rectangular waveguide has been extended to compute the cold parameters (dispersion and interaction impedance). A validation procedure demonstrates the validity of the model in THz frequency range. A study on the positioning of the electron beam in the slow-wave structure, based on the interaction impedance evaluation has been carried out. Monte Carlo analysis of a corrugated rectangular waveguide traveling wave tube (TWT), performed by the use of the proposed model demonstrates its effectiveness in the design at THz frequencies, without the need of 3-D simulators in this design phase.