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Proceedings Paper

Cusptron: A Compact High-Power Microwave Tube
Author(s): Won Narnkung
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Paper Abstract

Cusptrons produce microwave radiation at the fundamental and harmonic electron cyclotron frequencies by the negative mass instability. A low-energy, axis-rotating beam of 28-30 kV, 0.8-3.5 A, 4 us, and 60 pps is used to generate a single RF-mode both in a circular cavity and in a six-vane circuit. In fundamental and second harmonic frequency generation with a circular circuit, the independently excited modes are TEll's and TE21's with radiation power of more than 1.8 kW and an electronic efficiency of approximately 7.5%. In high-harmonic frequency generation with a six-vane circuit, microwave radiation at 6.0 GHz (sixth harmonic) and 3.9 GHz (fourth harmonic) is also independently generated with more than 10.4 kW and 4.0 kW, respectively. In this case, corresponding electronic efficiencies are approximately 10.0 and 9.5%.

Paper Details

Date Published: 9 May 1988
PDF: 8 pages
Proc. SPIE 0873, Microwave and Particle Beam Sources and Propagation, (9 May 1988); doi: 10.1117/12.965086
Show Author Affiliations
Won Narnkung, Naval Surface Warfare Center (United States)

Published in SPIE Proceedings Vol. 0873:
Microwave and Particle Beam Sources and Propagation
Norman Rostoker, Editor(s)

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