Preliminary design of 1 MW, Ku-band gyrotron traveling-wave amplifier

Abstract

The preliminary design results of a 1-MW, Ku-band gyrotron traveling wave amplifier (gyro-TWA) are presented. Operating at the second cyclotron harmonic of the TE₁₁ mode, the amplifier characterizes good stability even in the case of no distributed losses loaded, which could potentially allow it to be operated at high average power. Large signal simulation shows that the amplifier can generate a saturated peak power of about 1 MW with efficiency of 26.6%, gain of 31 dB, and 3-dB bandwidth of about 1 GHz when driven by a 100 kV, 40 A electron beam with 5% axial velocity spread.

Keywords

gyrotron traveling wave amplifier (gyro-TWA) / Ku-band / millimeter wave amplifier

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Acknowledgements

This work was supported by the Funds for Doctor Degree Teacher of North China Electric Power University (Grant No. 200822008).

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2014 Higher Education Press and Springer-Verlag Berlin Heidelberg