公开(公告)号：US11387833B1

公开(公告)日：2022-07-12

申请号：US17466901

申请日：2021-09-03

Applicant: QUALCOMM Incorporated

Inventor： Alvin Siu-Chi Li ,  Yue Chao ,  Dongmin Park ,  Heui In Yoon ,  Tomas O'Sullivan ,  Jianjun Yu ,  Yiwu Tang

IPC: H03L7/089 ,  G04F10/00 ,  H04L7/033

Abstract: A method of quantization noise cancellation in a phase-locked loop (PLL) is provided according to certain aspects. The PLL includes a phase detector having a first input configured to receive a reference signal and a second input configured to receive a feedback signal. The method includes delaying the reference signal by a first time delay, delaying the feedback signal by a second time delay, receiving a delta-sigma modulator (DSM) error signal, and adjusting the first time delay and the second time delay in opposite directions based on the DSM error signal.