High-Power, Stable Ka/V Dual-Band Gyrotron Traveling-Wave Tube Amplifier

A dual-band amplifier can reduce the size, cost, and weight of a transmitter in dual-band radar and communication systems. This study proposes and theoretically investigates a gyrotron traveling-wave tube (gyro-TWT) amplifier capable of dual-band operation. Possible oscillations in the coaxial interaction waveguide are stabilized by the lossy inner cylinder. Under stable operating conditions, the gyro-TWT is predicted to provide a peak power of 375kW with 71 dB saturated gain and 3.8 GHz bandwidth in the Ka-band and a peak power of 150kW with 35 dB saturated gain and 1.7 GHz bandwidth in the V-band. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4719076]