Analytical and PIC simulation studies of Ka-band gyro-twystron amplifier

In this paper, a Ka band gyro-twystron has been designed and analyzed using a self-consistent nonlinear theory and validated through a commercial 3-D Particle-in-Cell code. The numerical analysis predicted around 157 kW at 35 GHz with a saturated gain of ~25dB and an electronic efficiency of ~30%. Further, the device is modeled using CST Particle Studio for studying its 3D beam-wave interaction behavior. The PIC simulation predicated ~150 kW of RF peak output power with the gain of 24.5 dB and a power conversion efficiency of ~29%.