Abstract

Van der Pol oscillator can be used to model microwave negative oscillator, and injection locked oscillator can be looked as forced Van der Pol oscillator. The article studies the amplitude and phase dynamics of the forced Van der Pol oscillator, and gets conditions under which injection locking phenomena can occur. Injection locked Van der Pol oscillator is also realized with a simple modern semiconductor circuit in the article. At last OrCAD PSpice is used to simulate the circuit and testify the conclusions got by theory analyzing.

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