Multi-phase oscillator and multi-phase oscillation signal generation method

摘要

A multi-phase oscillator and a multi-phase oscillation signal generation method. Wherein, the multi-phase oscillator comprises a delay loop buffer and plurality of oscillators. The delay loop buffer has N delay units. The oscillator can be a single phase oscillator, a 180° phase difference oscillator or a multiple phase difference oscillator. The N delay units are used to constitute a configuration having 360° phase shift where each delay unit has the same delay time and phase shift. Hence, the oscillation signals generated by the oscillators have a 360°/N phase difference that is not variable. Furthermore, the present invention also provides a 180° phase difference oscillator that can be applied in the multi-phase oscillator. Wherein, the 180° phase difference oscillator is composed of a plurality of inverters and a regenerator.