知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

7 records (took 0.014 seconds)

    CIRCULAR HISTOGRAM NOISE FIGURE FOR NOISE ESTIMATION AND ADJUSTMENT
    1.
    发明申请
    CIRCULAR HISTOGRAM NOISE FIGURE FOR NOISE ESTIMATION AND ADJUSTMENT 审中-公开

    公开(公告)号：US20190296755A1

    公开(公告)日：2019-09-26

    申请号：US15936015

    申请日：2018-03-26

    Applicant: QUALCOMM Incorporated

    Inventor： Seyed Arash MIRHAJ ,  Masoud ENSAFDARAN ,  Lei SUN ,  Dinesh ALLADI

    IPC: H03M1/08 ,  H03M1/00

    Abstract: Certain aspects of the present disclosure provide methods and apparatus for performing background noise estimation using a circular histogram noise figure (CHNF) in an analog-to-digital converter (ADC) circuit with redundancy. The estimated noise may be used to reduce the noise (e.g., comparator noise) in the ADC circuit. One example ADC circuit generally includes at least one of a comparator or a digital-to-analog converter (DAC) and at least one digital feedback input. The at least one digital feedback input is coupled to the at least one of the comparator or the DAC and is configured to adjust at least one parameter of the at least one of the comparator or the DAC based on at least a portion of an output of the ADC circuit.

    NON-OVERLAPPING GENERATION TECHNIQUE FOR BOOTSTRAP SWITCHES
    3.
    发明公开
    NON-OVERLAPPING GENERATION TECHNIQUE FOR BOOTSTRAP SWITCHES 审中-公开

    公开(公告)号：US20240364325A1

    公开(公告)日：2024-10-31

    申请号：US18307441

    申请日：2023-04-26

    Applicant: QUALCOMM Incorporated

    Inventor： Lei SUN ,  Yongjian TANG ,  Honghao JI

    IPC: H03K17/16

    CPC classification number: H03K17/162

    Abstract: A system includes a bootstrap circuit having an input and an output. The bootstrap circuit includes a boost capacitor having a first terminal and a second terminal, a first transistor coupled between the first terminal of the boost capacitor and the output of the bootstrap circuit, a second transistor, and a third transistor, wherein the second transistor and the third transistor are coupled in series between a gate of the first transistor and the second terminal of the boost capacitor. The system also includes a switch transistor, wherein a gate of the switch transistor is coupled to the output of the bootstrap circuit, and a terminal of the switch transistor is coupled to the input of the bootstrap circuit.

    MATCHING UNIT CAPACITOR WITH MULTIPLE METAL LAYERS
    5.
    发明公开
    MATCHING UNIT CAPACITOR WITH MULTIPLE METAL LAYERS 审中-公开

    公开(公告)号：US20230370085A1

    公开(公告)日：2023-11-16

    申请号：US17740465

    申请日：2022-05-10

    Applicant: QUALCOMM Incorporated

    Inventor： Lei SUN ,  Aram AKHAVAN ,  Behnam SEDIGHI ,  Tszwing CHOI ,  Henry LAU

    IPC: H03M1/80 ,  H01L23/522 ,  H01L49/02 ,  H01G4/38

    CPC classification number: H03M1/802 ,  H01L23/5223 ,  H01L28/86 ,  H01G4/38

    Abstract: A capacitor device comprises a semiconductor substrate with multiple metal layers above the substrate. a first metal layer has a first plurality of bottom terminals elongated in a first direction, and a first plurality of top terminals, electrically coupled to each other, elongated in the first direction and interleaved with the first plurality of bottom terminals. A second metal layer between the semiconductor substrate and the first metal layer has a second plurality of bottom terminals elongated in the first direction, and a second plurality of top terminals, electrically coupled to each other and the first plurality of top terminals, elongated in the first direction and interleaved with the second plurality of bottom terminals.

    TECHNIQUES FOR ACCURATE CABLE LOSS MEASUREMENT
    6.
    发明申请
    TECHNIQUES FOR ACCURATE CABLE LOSS MEASUREMENT 有权

    公开(公告)号：US20230098404A1

    公开(公告)日：2023-03-30

    申请号：US17486745

    申请日：2021-09-27

    Applicant: QUALCOMM Incorporated

    Inventor： Cheng TAN ,  Lei SUN ,  Sean Vincent MASCHUE ,  Bruce Charles FISCHER, JR. ,  Brian FRENCH

    IPC: H04B3/48 ,  H03F3/24

    Abstract: Certain aspects of the present disclosure provide techniques for determining a cable loss associated with a transmission cable of an apparatus. An example method includes sending, to a radio modem of the apparatus, a request for the radio modem to use a target power when sending one or more signals to the signal compensator device for determining a cable loss associated with a transmission cable communicatively coupling the radio modem with the signal compensator device, receiving, at a signal compensator device of the apparatus, the one or more signals from the radio modem sent using the target power, and determining the cable loss associated with the transmission cable based on the one or more signals.

    OUTPUT COMMON-MODE CONTROL FOR DYNAMIC AMPLIFIERS
    7.
    发明申请
    OUTPUT COMMON-MODE CONTROL FOR DYNAMIC AMPLIFIERS 有权

    公开(公告)号：US20230046277A1

    公开(公告)日：2023-02-16

    申请号：US17403683

    申请日：2021-08-16

    Applicant: QUALCOMM Incorporated

    Inventor： Aram AKHAVAN ,  Kentaro YAMAMOTO ,  Lei SUN ,  Ganesh KIRAN

    IPC: H03M1/16 ,  H03F3/45 ,  H03M1/12

    Abstract: Techniques and apparatus for output common-mode control of dynamic amplifiers, as well as analog-to-digital converters (ADCs) and other circuits implemented with such dynamic amplifiers. One example amplifier circuit includes a dynamic amplifier and a current source. The dynamic amplifier generally includes differential inputs, differential outputs, transconductance elements coupled to the differential inputs, a first set of capacitive elements coupled to the differential outputs, and a control input for controlling a time length of amplification for the dynamic amplifier. The current source is configured to generate an output current such that portions of the output current are selectively applied to the differential outputs of the dynamic amplifier during at least a portion of the time length of amplification.

Patent Agency Ranking