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Simulation results of a 0.3THz gyro-traveling wave amplifier(TWA) are presented in this paper. The gyro-TWA operates in the HE06 mode of a quasi-optical confocal waveguide using a gyrating electron beam. The amplifier has achieved a linear gain of 24.3 dB, a 3dB bandwidth of 4.0 GHz, and output power up tp 35W at a beam voltage of 18 kV, beam current of 0.15A, 10.8T magnetic field and beam pitch factor...
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