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IEEE Microwave and Guided Wave Letters
Volume 10 Number 3, March 2000

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Design of a 70-GHz Second-Harmonic Gyroklystron Experiment for Radar Applications

W. Lawson

Page 108.

Abstract:

A second-harmonic gyroklystron circuit has been designed to produce 140 kW of peak power near 70 GHz. A 70-kV 8-A beam with an average velocity ratio of 1.35 and an axial velocity spread of 8% rms interacts with four cavities operating in circular electric modes. The input cavity operates in the TE011 mode and has been utilized previously in a number of successful first-harmonic gyroklystrons. The remaining cavities operate in the TE021 mode and have been designed to be compatible with the existing first-harmonic test bed. The simulated gain is about 33.4 dB, and the expected instantaneous bandwidth is nearly 0.091%.

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