Phase locking of high-power microwave oscillators

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Abstract
Phase locking is considered both for a case in which an oscillator is driven by an external signal without feedback, and for a case in which two coupled oscillators drive each other. A comprehensive sustained oscillator model is used for the driven microwave cavity. The new locking conditions for two coupled oscillators show that phase locking can occur only when the connector contributes the zero or π phase delay. Temporal behavior is solved numerically. Calculations with large priming power agree with the experiments on a high‐power magnetron driven vircator in which there is no feedback to the magnetron. The mutual drive calculations also agree with the experiments on high‐power coupled magnetrons.