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Review of Injection-Locked Oscillators In other words, when the free-running oscillation frequency is low, the injection should speed up the oscillation phase to match the rate of the multiplied reference clock to maintain a locked state
1. Introduction to Jitter - Seoul National University What is Injection Locking? A oscillator is locked to a frequency of an external signal close to its free-running frequency – Frequency is locked but not the phase (Ainj, Aosc, ωinj,ω0)
Simulation of optoelectronic oscillator injection locking, pulling . . . A new delay integral differential equation (DDE) formulation of an OEO under external injection is presented in a prior work 4 that removes the implicit assumption of a single-mode oscillator under weak injection made in previous treatments that apply classical injection locking theory to OEOs
Injection-locked oscillators, frequency dividers and multipliers Injection locking is a special type of forced oscillation in nonlinear oscillators Suppose a signal of frequency omega i is injected into an oscillator, which has a self-oscillation (free-running) frequency omega 0
CMOS Injection-locked Ring Oscillator Frequency Dividers Locking range is not symmetric around the free-running frequency of the ILFD, specially at higher injected power levels This behavior is due to the increase of IDC with the injected signal
A Unified Model for Injection-Locked Frequency Dividers According to this tradition, injection-locked systems are free-running oscillators which lock in phase and frequency to an injected input signal, while regenerative systems do not free-run; they require an injected signal to produce an output
A Study of Injection Locking and Pulling in Oscillators escribes new insights into injection locking and pulling and formulates the behavior of phase-locked oscillators under injection A graphical interpretation of Adler’s equation illustrates pulling in both time and frequency domains whi