Abstract-A high-speed multi-phase oscillator based on selftimed ring is proposed. Self-timed rings (STR) are promising approach for designing high-speed serial links and clock generators. Indeed, the architecture of STR allows us to achieve high frequencies with multiphase outputs and their oscillation frequency is not only depending on the number of stages but also on the initial state of the ring. Moreover, this architecture allows us 3 dB phase noise reduction when, while keeping the same frequency, when the stage number ...