Accurate cold-test model of helical TWT slow-wave circuits

Author

Kory, Carol L. ; Dayton, James A., Jr.

Author_Institution

Analex Corp., NASA Lewis Res. Center, Cleveland, OH, USA

Volume

45

Issue

4

fYear

1998

fDate

4/1/1998 12:00:00 AM

Firstpage

966

Lastpage

971

Abstract

Recently, a method has been established to accurately calculate cold-test data for helical slow-wave structures using the three-dimensional (3-D) electromagnetic computer code, MAFIA. Cold-test parameters have been calculated for several helical traveling-wave tube (TWT) slow-wave circuits possessing various support rod configurations, and results are presented here showing excellent agreement with experiment. The helical models include tape thickness, dielectric support shapes and material properties consistent with the actual circuits. The cold-test data from this helical model can be used as input into large-signal helical TWT interaction codes making it possible, for the first time, to design a complete TWT via computer simulation

Keywords

digital simulation; dispersion relations; electrical engineering computing; slow wave structures; 3D electromagnetic computer code; MAFIA; cold-test data; cold-test model; dielectric support shapes; helical TWT slow-wave circuits; large-signal helical TWT interaction codes; material properties; support rod configurations; tape thickness; traveling-wave tube; Attenuation; Circuit simulation; Dielectric materials; Dielectric measurements; Dispersion; Frequency; Geometry; Impedance; NASA; Solid modeling;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/16.662812

Filename

662812