Design Methodology and Experimental Verification of Serpentine/Folded-Waveguide TWTs

Author

Nguyen, Khanh T. ; Vlasov, Alexander N. ; Ludeking, Lars ; Joye, Colin D. ; Cook, Alan M. ; Calame, Jeffrey P. ; Pasour, John A. ; Pershing, Dean E. ; Wright, Edward L. ; Cooke, Simon J. ; Levush, Baruch ; Abe, David K. ; Chernin, D.P. ; Chernyavskiy, Igo

Author_Institution

Beam Wave Res. Inc., Bethesda, MD, USA

Volume

61

Issue

6

fYear

2014

fDate

Jun-14

Firstpage

1679

Lastpage

1686

Abstract

The general electromagnetic properties and design methodology for serpentine/folded-waveguide (FW) amplifiers are presented. In addition, hybrid-waveguide circuit topologies, which permit greater design flexibility than the basic serpentine/FW topologies, are also introduced, and their dispersion characteristics are discussed. Experimental validation of design methodology and tools is provided via test results of the recently demonstrated wideband 220-GHz serpentine amplifier, which embodies the design methodology described herein. Particular attention will be paid to the comparison between code prediction and experimental data, which are in excellent agreement.

Keywords

electromagnetic waves; hybrid integrated circuits; millimetre wave amplifiers; network topology; travelling wave tubes; dispersion characteristics; electromagnetic properties; frequency 220 GHz; hybrid-waveguide circuit topology; serpentine-folded-waveguide TWT; serpentine/folded-waveguide amplifiers; Design methodology; Dispersion; Electron beams; Fabrication; Passband; Radio frequency; Topology; Amplifier; backward-wave oscillation (BWO); dispersion; folded waveguide (FW); oscillation; serpentine; stopband; traveling-wave tube (TWT); vacuum electronics; vacuum electronics.;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/TED.2014.2303711

Filename

6804757