Design and PIC simulation a stagger tuned gyro-twystron

In this paper, the design and particle simulation of a Ka-band stagger tuned gyro-twystron amplifier is presented. The concept of stagger tuning in gyro-twystron improves the bandwidth along with high RF output power which is suitable for radar application. The complete amplifier structure is modelled in “CST particle studio” for studying the beam wave interaction behaviour. The PIC simulation predicted a peak output power of ~ 135kW for the beam parameters of 80 kV, 3A with a velocity spread of 5%. The electronic efficiency has been obtained as 56%, and the saturated gain of 57 dB. The stagger technique enhanced the bandwidth by ~ 2% about the centre frequency.