High-Power Millimeter-Wave Coupled-Cavity Traveling-Wave Tubes

Bill G. James

doi:10.1117/12.940796

24 September 1987 High-Power Millimeter-Wave Coupled-Cavity Traveling-Wave Tubes

Bill G. James

Proceedings Volume 0791, Millimeter Wave Technology IV and RF Power Sources; (1987) https://doi.org/10.1117/12.940796
Event: 1987 Technical Symposium Southeast on Optics, Electro-Optics, and Sensors, 1987, Orlando, FL, United States

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.

Citation Download Citation

Bill G. James "High-Power Millimeter-Wave Coupled-Cavity Traveling-Wave Tubes", Proc. SPIE 0791, Millimeter Wave Technology IV and RF Power Sources, (24 September 1987); https://doi.org/10.1117/12.940796

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