公开(公告)号：US20240106623A1

公开(公告)日：2024-03-28

申请号：US17935052

申请日：2022-09-23

Applicant: QUALCOMM Incorporated

Inventor： Gang LIU ,  Xiaotie WU ,  Razak HOSSAIN ,  Marco ZANUSO ,  Yiwu TANG

IPC: H04L7/033 ,  H04L7/00 ,  H04W56/00

CPC classification number: H04L7/033 ,  H04L7/0033 ,  H04W56/0035

Abstract: Aspects described herein include devices and methods for phase tracking and correction using sampling. One aspect includes a wireless communication apparatus having an analog 1-bit sampler configured to sample a phase locked loop (PLL) output signal using a PLL reference clock to generate 1-bit samples and a digital phase computation and control circuit configured to receive the 1-bit samples from the analog 1-bit sampler and apply phase corrections to the PLL based on a phase error derived from the 1-bit samples.

公开(公告)号：US20210036168A1

公开(公告)日：2021-02-04

申请号：US16674002

申请日：2019-11-05

Applicant: QUALCOMM Incorporated

Inventor： Ye LU ,  Gang LIU ,  Zhongze WANG

IPC: H01L29/94 ,  H01L29/66 ,  H01L27/08

Abstract: Aspects generally relate to a complimentary MOS capacitor with improved linearity. A complimentary MOS capacitor includes an n-type MOS capacitor and a p-type MOS capacitor coupled in parallel. The p-type MOS capacitor biased to an opposite voltage polarity of the n-type MOS capacitor.

公开(公告)号：US20180351528A1

公开(公告)日：2018-12-06

申请号：US15703756

申请日：2017-09-13

Applicant: QUALCOMM Incorporated

Inventor： Gang LIU ,  Jeremy DUNWORTH

IPC: H03H7/01 ,  H03B5/12 ,  H03H3/00

CPC classification number: H03H7/0115 ,  H01F17/0006 ,  H01F2017/0073 ,  H01F2017/0086 ,  H03B5/1203 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/1234 ,  H03B5/1243 ,  H03B2200/009 ,  H03H3/00

Abstract: A planar differential inductor reduces an effect of parasitics on common mode inductance of a voltage controlled oscillator (VCO)-based inductor to properly ground a common mode alternating current (AC) ground. In one instance, the planar differential inductor includes a ground plane, routing lines, distributed capacitors, an exterior inductor structure, and an interior inductor structure. The planar differential inductor may be coupled to a capacitor as part of an LC tank that operates as a resonator within a VCO. The bypass capacitor array is coupled between the ground plane and the routing lines. The exterior inductor structure is coupled between the routing lines and a power supply. The interior inductor is within the ground plane and coupled between the routing lines and differential ports.

公开(公告)号：US20200177126A1

公开(公告)日：2020-06-04

申请号：US16697801

申请日：2019-11-27

Applicant: QUALCOMM Incorporated

Inventor： Gang LIU ,  Mohammad FARAZIAN ,  Wu-Hsin CHEN ,  Razak HOSSAIN

IPC: H03B5/12

Abstract: Certain aspects provide a circuit for generating an oscillating signal. The circuit generally includes a voltage-controlled oscillator (VCO) having cross-coupled transistors, a first capacitive element and a second capacitive element coupled to the cross-coupled transistors, and a first inductive element and a second inductive element coupled to the cross-coupled transistors. First terminals of the first inductive element and the second inductive element are coupled to first terminals of the first capacitive element and the second capacitive element, respectively. The circuit also includes a control circuit having an output coupled to a supply voltage node at second terminals of the first inductive element and the second inductive element, and a feedback path coupled between the VCO and an input of the control circuit.