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Proceedings Paper

High-Power Millimeter-Wave Coupled-Cavity Traveling-Wave Tubes
Author(s): Bill G. James
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Paper Abstract

A number of high-power linear beam millimeter-wave TWTs have been developed at Varian Associates, in recent years. The development of these tubes required the design of extremely high-power density electron beams using cathodes capable of delivering current densitites of 10 A/cm . These electron beams incorporate confined flow focusing, using both solenoid and PPM focusing techniques. New innovative ladder circuit designs have been developed to provide high-thermal capacity, making the generation of high power at millimeter-wavelengths possible. Further, the ladder circuits afford reliable and repeatable fabrication of circuits requiring stringent dimensional tolerances with high manufacturing yields. These high-power millimeter-wave TWTs have been named (MILLITRONS) and have elevated the power output capability of millimeter-wave TWTs to their present levels of performance. The expected limits of power output for these devices are discussed.

Paper Details

Date Published: 24 September 1987
PDF: 9 pages
Proc. SPIE 0791, Millimeter Wave Technology IV and RF Power Sources, (24 September 1987); doi: 10.1117/12.940796
Show Author Affiliations
Bill G. James, Varian Associates, Inc (United States)

Published in SPIE Proceedings Vol. 0791:
Millimeter Wave Technology IV and RF Power Sources
James T. Coleman; James C. Wiltse, Editor(s)

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