Fast locking oscillator design methodology

摘要

In this work, time domain analysis is used to solve Adler's equation in order to obtain the required time, for an oscillator under external injection, reaching the steady-state condition. Then, the analysis is verified by simulations of an LF ring as well as a typical 3.65 GHz RF-LC oscillator under injection. After that, a delay-based time-domain analysis is used to reveal the dependency of circuit parameters to the locking time, for ring oscillators. Finally, a design methodology is deduced which enables designers to evaluate and minimize the timing budget required to achieve injection locking in designing a fast locking ring oscillator.