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    Oscillator and clock circuit
    2.
    发明授权
    Oscillator and clock circuit 有权

    公开(公告)号：US11989049B2

    公开(公告)日：2024-05-21

    申请号：US17487214

    申请日：2021-09-28

    Applicant: HUAWEI TECHNOLOGIES CO., LTD.

    Inventor： Jichao Huang ,  Qing Min ,  Lei Lu

    IPC: G06F1/08 ,  H03B5/12 ,  H03L7/099 ,  H03L7/187

    CPC classification number: G06F1/08 ,  H03B5/1228 ,  H03L7/0991 ,  H03L7/187

    Abstract: An oscillator and a clock circuit are disclosed. In an oscillator (100), a tail inductor connected to a cross-coupled transistor includes at least two inductors connected in parallel. Therefore, an inductance of the tail inductor is less than an inductance of any one of the inductors. This can address a design difficulty that a tail inductor with a smaller inductance needs to be used as an operating frequency of a VCO increases. The oscillator (100) includes a first cross-coupled transistor (121) and a first tail inductor (111). The first tail inductor (111) includes at least two inductors connected in parallel. The first tail inductor (111) is coupled to a source of the first cross-coupled transistor (121). The source of the first cross-coupled transistor (121) is coupled to a power supply or a ground through the first tail inductor (111).

    ELECTRONIC CIRCUIT FOR DELIVERING SIGNALS IN QUADRATURE
    3.
    发明公开
    ELECTRONIC CIRCUIT FOR DELIVERING SIGNALS IN QUADRATURE 审中-公开

    公开(公告)号：US20240137254A1

    公开(公告)日：2024-04-25

    申请号：US18491212

    申请日：2023-10-19

    Applicant: STMicroelectronics France

    Inventor： Florence Giry-Cassan

    IPC: H04L27/227 ,  H03B5/12

    CPC classification number: H04L27/2273 ,  H03B5/1228 ,  H03B2200/0078

    Abstract: Embodiments provide a device that includes a first circuit having a first input to receive a first sine wave signal and a second input to receive a second sine wave signal in quadrature with respect to each other and a current mode logic gate having a first input coupled to a first output of the first circuit and a second input coupled to a second output of the first circuit. The first circuit configured to deliver a first square wave signal and a second square wave signal. The current mode logic gate is configured to deliver a third square wave signal at a first level and a fourth square wave signal at a second level when the first and second square wave signals are simultaneously at their first levels and the first square wave signal is ahead of the second square wave signal.

    Oscillator circuit and device
    5.
    发明授权
    Oscillator circuit and device 有权

    公开(公告)号：US11777446B2

    公开(公告)日：2023-10-03

    申请号：US17728877

    申请日：2022-04-25

    Applicant: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.

    Inventor： Chi-Hsien Lin ,  Ho-Hsiang Chen ,  Hsien-Yuan Liao ,  Tzu-Jin Yeh ,  Ying-Ta Lu

    IPC: H03B5/12 ,  H03B1/04 ,  H03H7/01

    CPC classification number: H03B5/1228 ,  H03B1/04 ,  H03B5/1203 ,  H03B5/1206 ,  H03B5/1212 ,  H03B5/1243 ,  H03B5/1296 ,  H03H7/0161 ,  H03B2200/009

    Abstract: An oscillator includes a forward stage including first and second terminals and a transformer-coupled band-pass filter (BPF) coupled between the first and second terminals and including a coupling device between the first and second terminals, and a transformer including first and second windings in a metal layer of an IC. The first winding includes a first conductive structure coupled to the first terminal and a second conductive structure coupled to a voltage node, a third conductive structure including first and second extending portions connected to the first and second conductive structures. The second winding includes a fourth conductive structure including a third extending portion coupled to the voltage node, and a fourth extending portion coupled to the second terminal. The third extending portion is between the second conductive structure and the first extending portion, and the fourth extending portion is between the first conductive structure and the second extending portion.

    Oscillator with tapped inductor
    6.
    发明授权
    Oscillator with tapped inductor 有权

    公开(公告)号：US11770100B2

    公开(公告)日：2023-09-26

    申请号：US17848415

    申请日：2022-06-24

    Applicant: MEDIATEK INC.

    Inventor： Shuo-Yuan Hsiao ,  Manxia Xiao

    IPC: H03B5/12

    CPC classification number: H03B5/1228 ,  H03B5/1212 ,  H03B2200/009

    Abstract: The present invention provides an oscillator including a tapped inductor and a cross-coupled pair. The tapped inductor includes a first terminal, a second terminal, a first tap and a second tap. The cross-coupled pair receives two input signals from the first terminal and the second terminal to generate two output signals to the first tap and the second tap, respectively.

    Quadrature voltage-controlled oscillator (QVCO) with improved phase noise and quadrature imbalance trade-off
    8.
    发明授权
    Quadrature voltage-controlled oscillator (QVCO) with improved phase noise and quadrature imbalance trade-off 有权

    公开(公告)号：US11695372B1

    公开(公告)日：2023-07-04

    申请号：US17650834

    申请日：2022-02-11

    Applicant: QUALCOMM Incorporated

    Inventor： Emanuele Lopelli ,  Cheng-Han Wang ,  Yi Zeng

    IPC: H03B5/12

    CPC classification number: H03B5/1228 ,  H03B5/124 ,  H03B5/1212 ,  H03B2200/009 ,  H03B2200/0078

    Abstract: Apparatus and methods for generating multiple oscillating signals. An example circuit generally includes a first voltage-controlled oscillator (VCO) circuit and a second VCO circuit having a differential bias input coupled to a differential output of the first VCO circuit. At least one of the first VCO circuit or the second VCO circuit generally includes: a pair of cross-coupled transistors comprising a first transistor and a second transistor, a first inductive element coupled between a first node and the drain of the first transistor, a second inductive element coupled between the first node and the drain of the second transistor, a third transistor having a drain coupled to the drain of the first transistor and having a source coupled to a second node, and a fourth transistor having a drain coupled to the drain of the second transistor and having a source coupled to the second node.

    Energy-saving label for attachment to an animal
    9.
    发明授权
    Energy-saving label for attachment to an animal 有权

    公开(公告)号：US11641843B2

    公开(公告)日：2023-05-09

    申请号：US17139098

    申请日：2020-12-31

    Applicant: Nedap N.V.

    Inventor： Jeroen Martin Van Dijk ,  Jan Cornelis Stekelenburg

    IPC: A01K11/00 ,  H02J7/34 ,  H03B5/12

    CPC classification number: A01K11/006 ,  H02J7/345 ,  H03B5/1228 ,  H02J2207/50

    Abstract: A label is described for attachment to an animal. The label includes a transmitting and receiving device having an electric oscillator circuit that, upon closure of the oscillator circuit, generates a periodic electric oscillator signal with an oscillation period for transmitting an electromagnetic beacon signal with the transmitting and receiving device. The label is configured for closing the electric oscillator circuit during a predetermined transmission duration, and is further configured for opening the electric oscillator circuit upon elapse of the predetermined transmission duration, wherein the predetermined transmission duration corresponds to at least one and at least a whole number of oscillation periods of the electric oscillator signal.

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