Modeling and experimental studies of a side band power re-injection locked magnetron
Ye Wen-Jun, Zhang Yi, Yuan Ping, Zhu Hua-Cheng, Huang Ka-Ma, Yang Yang†, 
Peaks of free running magnetron with tuning stub. The dashed line is the peak of free running magnetron with all the three pins at their highest points and the tuning stub is used as a directional waveguide. The solid data point-fold line is the peak of free running magnetron with pins at different positions. In those operating conditions, the tuning stub is an optimizer.
