An integral-polepiece folded-waveguide slow-wave circuit for high-power millimeter-wave TWTs

Author

Theiss, A.J. ; Lyon, D.B. ; Hiramatsu, Y.

Author_Institution

Electron Devices Div., Litton Ind., San Carlos, CA, USA

fYear

1993

fDate

5-8 Dec. 1993

Firstpage

149

Lastpage

151

Abstract

There is presently much interest in low-cost, thermally rugged, slow-wave circuits that can be utilized in high power millimeter-wave TWTs. This interest includes both innovations of the design and fabrication of traditional helices and coupled-cavities as well as new circuit concepts. A program to develop a high power Ka-band TWT at Litton EDD resulted in the investigation of a novel, low-cost, lightweight, thermally rugged, integral-polepiece folded-waveguide circuit that seems well suited for millimeter-wave TWTs. Circuits built into experimental Ka-band TWTs produced peak power levels above 800 watts, gain levels of up to 10 dB/in, and average power levels of hundreds of watts.<>

Keywords

microwave amplifiers; power amplifiers; rectangular waveguides; travelling-wave-tubes; 800 W; Ka-band; average power levels; gain levels; high-power millimeter-wave TWTs; integral-polepiece folded-waveguide circuit; peak power levels; slow-wave circuit; thermally rugged; Copper; Costs; Coupling circuits; Fabrication; Impedance; Iron; Magnetic circuits; Magnetic materials; Millimeter wave circuits; Structural beams;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices Meeting, 1993. IEDM '93. Technical Digest., International

Conference_Location

Washington, DC, USA

ISSN

0163-1918

Print_ISBN

0-7803-1450-6

Type

conf

DOI

10.1109/IEDM.1993.347378

Filename

347378