High power microwave generation from a two-cavity gyroklystron experiment

W. Lawson

doi:10.1117/12.2301631

1 December 1990 High power microwave generation from a two-cavity gyroklystron experiment

W. Lawson

Proceedings Volume 1514, 15th International Conference on Infrared and Millimeter Waves; 151465 (1990) https://doi.org/10.1117/12.2301631
Event: 15th International Conference on Infrared and Millimeter Waves, 1990, Orlando, FL, United States

Abstract

At the University of Maryland we have designed and are operating a high power two-cavity TE₀₁ gyroklystron in the 9.7-10.0 GHz range. The target beam power is derived from a 500 kV beam with a current ranging from 120-240 A in 1 μs pulses. The target microwave parameters for this tube include a power level of 15-30 MW with a gain of 25-30 dB. The initial sequence of experiments involves characterizing a two-cavity system to address questions of tube stability and amplifier efficiency. We have completed investigations of our first three configurations and are currently examining our fourth. To date, parasitic oscillations have limited beam voltage to under 400 kV. Even with these restricted parameters, amplifier experiments have achieved powers in excess of 2 MW with gains of 17 dB and efficiencies of nearly 6%.

Citation Download Citation

W. Lawson "High power microwave generation from a two-cavity gyroklystron experiment", Proc. SPIE 1514, 15th International Conference on Infrared and Millimeter Waves, 151465 (1 December 1990); https://doi.org/10.1117/12.2301631

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