Performance characteristics of the NTHU gyrotron traveling wave amplifier

K. R. Chu

doi:10.1117/12.2297812

1 October 1991 Performance characteristics of the NTHU gyrotron traveling wave amplifier

K. R. Chu

Proceedings Volume 1576, 16th International Conference on Infrared and Millimeter Waves; 15762R (1991) https://doi.org/10.1117/12.2297812
Event: 16th International Conference on Infrared and Millimeter Waves, 1991, Lausanne, Switzerland

Abstract

Effects of magnetic field profiling and tuning on the performance of Ka-band gyrotron traveling wave amplifiers are examined experimentally and verified by theoretical calculations. Regimes of stable and unstable operations are systematically investigated and sources of spontaneous oscillations are identified. It is shown that, through magnetic field profiling and tuning, the gyro-TWT can be optimized for maximum gain, bandwidth, or efficiency. In particular, a power level of 50 kW has been achieved with magnetic field profiling. The performances of severed and unsevered gyro-TWT's are also compared. The addition of a sever is shown to result in very significant improvement in gain and stability. Critical functions of a sever in a gyro-TWT will be also discussed.

Citation Download Citation

K. R. Chu "Performance characteristics of the NTHU gyrotron traveling wave amplifier", Proc. SPIE 1576, 16th International Conference on Infrared and Millimeter Waves, 15762R (1 October 1991); https://doi.org/10.1117/12.2297812

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