New technologies used for the 1 THz backward-wave oscillator

Author

Garcin, P. ; Grauleau, D. ; Gerber, R. ; Teyssier, L.

Author_Institution

Tubes Electron., Boulogne-Billancourt, France

fYear

1988

fDate

11-14 Dec. 1988

Firstpage

850

Lastpage

853

Abstract

For the needs of local oscillators in radiotelescopes, a backward-wave oscillator (BWO) in type 850-1000-GHz bandwidth with 1-mW output power was built. These tubes were fitted with classical vane-type delay lines machined by milling. Because of its small dimensions, the delay line is extremely difficult to build by the standard milling process. A technology has been developed which consists of engraving 100- mu m-thick molds of silicon or polyimide, and then filling them with electrolytic copper. At the present time, BWOs fitted with these delay lines have not oscillated, and the reasons for this behavior are analyzed.<>

Keywords

backward wave tubes; delay lines; microwave oscillators; radiotelescopes; 1 mW; 100 micron; 850 to 1000 GHz; BWO; Si moulds; Si-Cu; THF operation; backward-wave oscillator; electrolytic Cu; engraving; local oscillators; microwave tubes; output power; polyimide moulds; radiotelescopes; vane-type delay lines; Blades; Copper; Delay lines; Electron tubes; Frequency; Local oscillators; Milling; Polyimides; Power generation; Silicon;

fLanguage

English

Publisher

ieee

Conference_Titel

Electron Devices Meeting, 1988. IEDM '88. Technical Digest., International

Conference_Location

San Francisco, CA, USA

ISSN

0163-1918

Type

conf

DOI

10.1109/IEDM.1988.32944

Filename

32944