Fault-tolerant multi-node coupling triple mode redundancy voltage controlled oscillator for reducing soft error in clock and data recovery

摘要

A voltage controlled oscillator (VCO) applied to phase-locked loop with multi-node coupling triple mode redundancy is proposed in this Letter. The proposed VCO consists of three independent operating VCOs. These VCOs are coupled through a metal oxide metal capacitor to synchronise the output of the three independent VCOs. The proposed VCO does not introduce loop delay, and the frequency and phase noise do not decline.