We present experimental results for a 93.2-GHz gyroklystron amplifier operated in the high-order TE021 cavity mode in a cryomagnet. In a three-cavity gyroklystron, a peak output power of 340 kW with 27% efficiency, 23-dB saturated gain, and 0.41% (380 MHz) bandwidth was obtained with a 75-kV, 17-A electron beam. The output-power and efficiency restriction was due to the selfexcitation of the TE021 operating mode in the output cavity. The influence of the electron beam current and intermediate cavity Q-factor on output characteristics of a three-cavity gyroklystron has been studied experimentally.
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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Radiofizika, Vol. 55, No. 5, pp. 341–350, May 2012.
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Zasypkin, E.V., Gachev, I.G. & Antakov, I.I. Experimental study of a W-band Gyroklystron amplifier operated in the high-order TE021 cavity mode. Radiophys Quantum El 55, 309–317 (2012). https://doi.org/10.1007/s11141-012-9370-4
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DOI: https://doi.org/10.1007/s11141-012-9370-4