摘要:
The invention provides a multi-phase oscillator includes 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. Furthermore, a 180° phase difference oscillator composed of a plurality of inverters and a regenerator can be applied in the multi-phase oscillator.