Phase Error Sensitivity to Injection Signals in Multi-Phase Injection-Locked Ring Oscillators
Signal Processing
2025-01-06 v1
Abstract
Multi-phase injection-locked ring oscillators (MP-ILROs) are widely used for multi-phase clock generation, with their phase accuracy primarily determined by the inherent accuracy of the oscillator itself, due to the suppression of input signal errors. However, a quantitative analysis of the oscillator's sensitivity to input errors remains largely unexplored. This paper presents a phasor-based analysis of injection locking, revealing that the phase error sensitivity is influenced by factors such as injection strength and the free-running frequency of the oscillator. Simulation results align closely with theoretical calculations, validating the effectiveness of the proposed method.
Cite
@article{arxiv.2501.01580,
title = {Phase Error Sensitivity to Injection Signals in Multi-Phase Injection-Locked Ring Oscillators},
author = {Zhaowen Wang},
journal= {arXiv preprint arXiv:2501.01580},
year = {2025}
}