Preliminary Design of a Harmonic-doubling Gyrotron Traveling Wave Amplifier |
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| Authors: | Chong-Qing Jiao and Ji-Run Luo |
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| Institution: | (1) School of Electrical and Electronic Engineering, North China Electric Power University, Beijing, 102206, China;(2) Institute of Electronics, Chinese Academy of Sciences, Beijing, 100080, China |
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| Abstract: | This study proposes a Ka-band harmonic-doubling gyrotron traveling-wave amplifier (gyro- TWT), using distributed wall losses
in the input stage and mode-selective interaction circuit in the output stage, to improve the stability of the amplification.
Based on a large signal simulation code, a saturated peak power of 163 kW with an efficiency of 15.5%, a gain of 31.1 dB,
and a 3 dB bandwidth of 0.9 GHz is predicted for the gyro-TWT driven by 70 kV, 15 A electron beam with a velocity ratio of
1.2 and velocity spread 5% at 33.2 GHz. |
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| Keywords: | Gyro-TWT Harmonic-doubling Millimeter wave amplifier Mode-selective circuit |
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