2N-Phase Oscillation in RF CMOS LC Oscillators Coupled by Mutual Inductors

摘要

When the oscillators are coupled, coupling methods are very important and influence some factors, for example, increasing or decreasing of noise and whether multi-phase synchronization phenomena can be observed or not due to the number of oscillators and so on. In this paper, multiphase synchronization phenomena which are generated by RF CMOS LC oscillators with mutual inductor couplings and the stability of various oscillatory modes in proposed model are investigated. In proposed system, multi-phase synchronization phenomena can be observed with no regard to the number of oscillators in RF region, due to setting up pole positions of mutual inductors properly, and the each oscillatory mode is stable.