1-D Large Signal Model of Folded-Waveguide Traveling Wave Tubes

Author

Chernin, D. ; Antonsen, Thomas M. ; Vlasov, Alexander N. ; Chernyavskiy, Igor A. ; Nguyen, Khanh T. ; Levush, Baruch

Author_Institution

Leidos, Inc., Reston, VA, USA

Volume

61

Issue

6

fYear

2014

fDate

Jun-14

Firstpage

1699

Lastpage

1706

Abstract

A recently published hybrid circuit model for folded-waveguide slow wave structures has been implemented in the 1-D large signal code CHRISTINE. The resulting code is applied to a design for a G-band (220 GHz) folded-waveguide traveling wave tube. Results of small and large signal gain are compared with those from TESLA, a 2-D code using the same circuit model. Conditions for accuracy of the 1-D model are illustrated and explained. The effects of an offset beam tunnel on circuit dispersion and amplifier stability are illustrated using the CHRISTINE code.

Keywords

millimetre wave amplifiers; millimetre wave integrated circuits; slow wave structures; waveguide couplers; 1D large signal model; CHRISTINE 1D large signal code; G-band; amplifier stability; circuit dispersion; folded-waveguide slow wave structures; folded-waveguide traveling wave tubes; frequency 220 GHz; hybrid circuit model; offset beam tunnel; Computational modeling; Dispersion; Equations; Impedance; Integrated circuit modeling; Mathematical model; Power transmission lines; Equivalent circuit; folded-waveguide; large signal simulation; traveling wave tube; traveling wave tube.;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/TED.2014.2298100

Filename

6746663