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A Ka-Band Second Harmonic Gyroklystron Amplifier

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8 Author(s)
Shou-Xi Xu ; Key Lab. of High-Power Microwave Sources & Technol., Inst. of Electron., Beijing, China ; Pu-Kun Liu ; Shichang Zhang ; Yinong Su
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The design and experiment of a ka-band second harmonic gyroklytron amplifier are reported. The three-cavity 35-GHz second harmonic gyroklystron operates in the TE021 circular electric mode. Based on the numerical simulation, a three-cavity, second harmonic gyroklystron amplifier prototype has been fabricated. Experiments show a peak output power of 212 kW at 35 GHz with a 3-dB bandwidth of 155 MHz (0.44%) when utilizing a 58 kV, 23 A, v/vP = 1.45 electron beam from a magnetron injection gun. The efficiency is approximately 16%, and the gain is about 24 dB.

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Plasma Science, IEEE Transactions on  (Volume:40 ,  Issue: 8 )