公开(公告)号：US20220123691A1

公开(公告)日：2022-04-21

申请号：US17564595

申请日：2021-12-29

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yanqin CHEN ,  Chunbiao WU ,  Yongwang LIU ,  Bingzhao ZHANG

IPC: H03B5/24

Abstract: Embodiments of this application disclose an RC oscillator. The RC oscillator may amplify a difference between a first voltage and a second voltage by using a first amplifier and a second amplifier. The first amplifier may include a first amplification circuit and a second amplification circuit. The first amplification circuit and the second amplification circuit may share a same voltage-current conversion circuit. The RC oscillator disclosed in the embodiments of this application can not only avoid noise introduced by the first amplifier, but also reduce internal noise of the RC oscillator. This reduces a jitter of a clock signal.

公开(公告)号：US20220416793A1

公开(公告)日：2022-12-29

申请号：US17901971

申请日：2022-09-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yanqin CHEN

IPC: H03L7/089 ,  H03L7/099

Abstract: The technology of this application relates to a phase-locked loop circuit that includes a phase frequency detector, a first voltage control module, a second voltage control module, a third voltage control module, a voltage-controlled oscillator, and a frequency divider. A first output end of the phase frequency detector is connected to a first input end of the first voltage control module and a first input end of the second voltage control module, a second output end of the phase frequency detector is connected to a second input end of the first voltage control module and a second input end of the second voltage control module, an output end of the first voltage control module.