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    SYSTEM AND METHOD OF DUPLICATE CIRCUIT BLOCK SWAPPING FOR NOISE REDUCTION
    1.
    发明申请
    SYSTEM AND METHOD OF DUPLICATE CIRCUIT BLOCK SWAPPING FOR NOISE REDUCTION 审中-公开

    公开(公告)号：US20200328731A1

    公开(公告)日：2020-10-15

    申请号：US16912652

    申请日：2020-06-25

    Applicant: Silicon Laboratories Inc.

    Inventor： Steffen Skaug ,  Vitor Pereira ,  Arup Mukherji

    IPC: H03K3/013

    Abstract: An integrated circuit including a functional circuit including at least one swapping circuit node, multiple duplicate electronic circuits, and a switch circuit. The duplicate electronic circuits are integrated in close proximity with each other each including at least one electronic device that is susceptible to RTN. The switch circuit electrically couples a different selected subset of at least one of the duplicate electronic circuits to the at least one swapping circuit node for each of successive switching states during operation of the functional circuit. A method of reducing noise including selecting a subset of the duplicate electronic circuits, electrically coupling the selected duplicate electronic devices to at least one swapping circuit node of a functional circuit, and repeating the selecting and electrically coupling in successive switching states during operation of the functional circuit for different subsets of the duplicate electronic circuits.

    System and method of duplicate circuit block swapping for noise reduction
    3.
    发明授权
    System and method of duplicate circuit block swapping for noise reduction 有权

    公开(公告)号：US10969416B2

    公开(公告)日：2021-04-06

    申请号：US16219173

    申请日：2018-12-13

    Applicant: SILICON LABORATORIES INC.

    Inventor： Vitor Pereira ,  Arup Mukherji

    IPC: G01R29/26 ,  H03B5/20 ,  G06F1/04

    Abstract: An integrated circuit including at least one circuit node, multiple duplicate circuit blocks integrated on the integrated circuit in close proximity with each other, each including at least one device that is susceptible to random telegraph noise (RTN), and a switch circuit that swaps electrical coupling of the duplicate circuit blocks, one at a time, to the at least one circuit node in sequential cycles of a clock signal. The duplicate circuit blocks may be large functional blocks, such as an oscillator or a comparator or the like, or limited to circuits including RTN susceptible devices, such as differential pairs or the like. Each duplicate circuit block may include any number of connections for coupling to corresponding circuit nodes. The swapping may further include chopping in which multiple inputs are swapped with each other while multiple outputs are swapped with each other in consecutive clock cycles.

    DUAL-BAND OPERATION OF A RADIO DEVICE
    5.
    发明公开
    DUAL-BAND OPERATION OF A RADIO DEVICE 审中-公开

    公开(公告)号：US20240022268A1

    公开(公告)日：2024-01-18

    申请号：US18474395

    申请日：2023-09-26

    Applicant: Silicon Laboratories Inc.

    Inventor： Euisoo Yoo ,  Arup Mukherji ,  Rangakrishnan Srinivasan ,  Vitor Pereira ,  Zhongda Wang ,  Sriharsha Vasadi

    IPC: H04B1/00 ,  H03F3/195 ,  H03H7/38

    CPC classification number: H04B1/0064 ,  H03F3/195 ,  H03H7/38 ,  H03F2200/451 ,  H03F2200/294

    Abstract: In one embodiment, an integrated circuit includes: a first radio frequency (RF) circuit configured to receive and process a first RF signal having a sub-gigahertz (GHz) frequency to output a first lower frequency signal and to transmit RF signals having the sub-GHz frequency; a second RF circuit configured to receive and process a second RF signal having a frequency of at least substantially 2.4 GHz to output a second lower frequency signal and to transmit RF signals at the at least substantially 2.4 GHz; shared analog circuitry coupled to the first RF circuit and the second RF circuit, the shared analog circuitry to receive at least one of the first RF signal or the second RF signal and output a digital output signal; and a digital circuit coupled to the shared analog circuit, the digital circuit to recover message information from the digital output signal.

    DUAL-BAND OPERATION OF A RADIO DEVICE
    8.
    发明申请
    DUAL-BAND OPERATION OF A RADIO DEVICE 有权

    公开(公告)号：US20230099832A1

    公开(公告)日：2023-03-30

    申请号：US17490255

    申请日：2021-09-30

    Applicant: Silicon Laboratories Inc.

    Inventor： Euisoo Yoo ,  Arup Mukherji ,  Rangakrishnan Srinivasan ,  Vitor Pereira ,  Zhongda Wang ,  Sriharsha Vasadi

    IPC: H04B1/00 ,  H03F3/195 ,  H03H7/38

    Abstract: In one embodiment, an integrated circuit includes: a first radio frequency (RF) circuit configured to receive and process a first RF signal having a sub-gigahertz (GHz) frequency to output a first lower frequency signal and to transmit RF signals having the sub-GHz frequency; a second RF circuit configured to receive and process a second RF signal having a frequency of at least substantially 2.4 GHz to output a second lower frequency signal and to transmit RF signals at the at least substantially 2.4 GHz; shared analog circuitry coupled to the first RF circuit and the second RF circuit, the shared analog circuitry to receive at least one of the first RF signal or the second RF signal and output a digital output signal; and a digital circuit coupled to the shared analog circuit, the digital circuit to recover message information from the digital output signal.

    System and method of duplicate circuit block swapping for noise reduction
    9.
    发明授权
    System and method of duplicate circuit block swapping for noise reduction 有权

    公开(公告)号：US10972077B2

    公开(公告)日：2021-04-06

    申请号：US16912652

    申请日：2020-06-25

    Applicant: Silicon Laboratories Inc.

    Inventor： Steffen Skaug ,  Vitor Pereira ,  Arup Mukherji

    IPC: G01R29/26 ,  G06F1/04 ,  H03B5/20 ,  H03K3/013

    Abstract: An integrated circuit including a functional circuit including at least one swapping circuit node, multiple duplicate electronic circuits, and a switch circuit. The duplicate electronic circuits are integrated in close proximity with each other each including at least one electronic device that is susceptible to RTN. The switch circuit electrically couples a different selected subset of at least one of the duplicate electronic circuits to the at least one swapping circuit node for each of successive switching states during operation of the functional circuit. A method of reducing noise including selecting a subset of the duplicate electronic circuits, electrically coupling the selected duplicate electronic devices to at least one swapping circuit node of a functional circuit, and repeating the selecting and electrically coupling in successive switching states during operation of the functional circuit for different subsets of the duplicate electronic circuits.

    Transceiver circuit having a single impedance matching network
    10.
    发明授权
    Transceiver circuit having a single impedance matching network 有权

    公开(公告)号：US10141971B1

    公开(公告)日：2018-11-27

    申请号：US15815920

    申请日：2017-11-17

    Applicant: Silicon Laboratories Inc.

    Inventor： Mohamed Elkholy ,  Ayman Shafik ,  Yang Gao ,  Arup Mukherji ,  Navin Harwalkar

    IPC: H04B1/40 ,  H04B7/26 ,  H04B1/04 ,  H04B1/48

    Abstract: Embodiments of transceiver circuits disclosed herein include a first amplifier coupled to receive signals from an antenna during a receive (RX) mode of the transceiver circuit, a second amplifier coupled to transmit signals to the antenna during a transmit (TX) mode of the transceiver circuit, and a single impedance matching network coupled to the antenna and directly connected to a shared node to which the first and second amplifiers are directly connected. The single impedance matching network is configured to transform an impedance of the antenna into a resistance at the shared node. A control circuit is coupled to control the impedance transformation of the single impedance matching network, so as to provide a first resistance at the shared node during RX mode and a second resistance at the shared node during TX mode, wherein the second resistance is different from the first resistance.

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