Phase-locking of high power microwave oscillators with no limitation to injection power ratios

An analysis of phase-locking of high power microwave oscillators with no limitation to injection power ratios has been developed by making use of the concept of lumped circuit. The model predicts a more accurate phase locking condition than that in conventional phase locking theory. Sample calculations show that the power ratios play an important role to the locked phase, especially when the frequency difference between the oscillators is large enough.