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    Method and system for operating a communications device that communicates via inductive coupling
    31.
    发明授权
    Method and system for operating a communications device that communicates via inductive coupling 有权

    公开(公告)号：US10382098B2

    公开(公告)日：2019-08-13

    申请号：US15715044

    申请日：2017-09-25

    Applicant: NXP B.V.

    Inventor： Gernot Hueber ,  Ian Thomas Macnamara ,  Jingfeng Ding

    IPC: H01Q21/30 ,  H01Q5/50 ,  H04B5/00

    Abstract: Embodiments of methods and systems for operating a communications device that communicates via inductive coupling are described. In an embodiment, a method for operating a communications device that communicates via inductive coupling involves detecting a system condition associated with the communications device and tuning a matching network of the communications device in response to the system condition, where the matching network includes a hybrid transformer that separates a receiver of the communications device from a transmitter of the communications device. Other embodiments are also described.

    DEVICE DETECTION IN CONTACTLESS COMMUNICATION SYSTEMS
    32.
    发明申请
    DEVICE DETECTION IN CONTACTLESS COMMUNICATION SYSTEMS 审中-公开

    公开(公告)号：US20190149196A1

    公开(公告)日：2019-05-16

    申请号：US15812200

    申请日：2017-11-14

    Applicant: NXP B.V.

    Inventor： Gernot Hueber ,  Ian Thomas Macnamara

    IPC: H04B5/00 ,  G06K7/10

    Abstract: A near field communication (NFC) reader is disclosed. The NFC reader includes an antenna front-end that includes a low pass filter, a matching circuit and an antenna coil. The NFC reader also includes a NFC controller. The NFC controller includes an oscillator coupled to the antenna front-end and the NFC controller is configured to detect a presence of an object in proximity of the antenna front-end using one or more changes in an output of the oscillator. The antenna front-end creates a tank circuit for the oscillator.

    NFC DEVICE AND POWER MANAGEMENT METHOD
    33.
    发明申请
    NFC DEVICE AND POWER MANAGEMENT METHOD 审中-公开

    公开(公告)号：US20190068247A1

    公开(公告)日：2019-02-28

    申请号：US16118279

    申请日：2018-08-30

    Applicant: NXP B.V.

    Inventor： Gernot Hueber ,  Ian Thomas Macnamara

    IPC: H04B5/00 ,  H04W4/80 ,  G06F1/32 ,  H04W52/02

    Abstract: In accordance with a first aspect of the present disclosure, a near field communication (NFC) device is provided, comprising a processor and a wake-up detector, wherein the processor and the wake-up detector are configured to operate in different power domains, and wherein the wake-up detector is configured to wake up the processor in response to receiving power derived from a radio frequency (RF) field. In accordance with a second aspect of the present disclosure, a method of managing power in an NFC device is conceived, said NFC device comprising a processor and a wake-up detector that operate in different power domains, wherein the wake-up detector wakes up the processor in response to receiving power derived from an RF field.

    CONTACTLESS COMMUNICATION DEVICE WITH DIFFERENTIAL RECEIVER INPUT VOLTAGE STABLIZATION
    34.
    发明申请
    CONTACTLESS COMMUNICATION DEVICE WITH DIFFERENTIAL RECEIVER INPUT VOLTAGE STABLIZATION 审中-公开

    公开(公告)号：US20190020374A1

    公开(公告)日：2019-01-17

    申请号：US15646955

    申请日：2017-07-11

    Applicant: NXP B.V.

    Inventor： Jingfeng Ding ,  Gernot Hueber ,  Stefan Mendel

    IPC: H04B5/00 ,  H03L7/08 ,  H03G1/00 ,  G05F3/02

    Abstract: A contactless communication device includes a receiver unit having differential input terminals for connecting to an antenna. The receiver unit is coupled to a transmitting device and receives an RF signal transmitted by the transmitting device. A first comparator is adapted to generate a first comparator output signal indicative of a relationship between a voltage at a positive input terminal of the receiver unit and a first reference voltage. A second comparator is adapted to generate a second comparator output signal indicative of a relationship between a voltage at a negative input terminal of the receiver unit and a second reference voltage. A first voltage regulation circuit is adapted to regulate the voltage at the positive input terminal in response to the first comparator output signal. A second voltage regulation circuit is adapted to regulate the voltage at the negative input terminal in response to the second comparator output signal.

    EMC inductor-free RF front-end method and topology with power by field function for an inductively coupled communication system
    38.
    发明授权
    EMC inductor-free RF front-end method and topology with power by field function for an inductively coupled communication system 有权

    公开(公告)号：US11038553B2

    公开(公告)日：2021-06-15

    申请号：US16215173

    申请日：2018-12-10

    Applicant: NXP B.V.

    Inventor： Jingfeng Ding ,  Gernot Hueber ,  Erich Merlin

    IPC: H04B5/00

    Abstract: A near field communication (NFC) device capable of operating by being powered by the field includes an NFC module for generating an electromagnetic carrier signal and modulating the carrier signal according to data to be transmitted, and an antenna circuit coupled to and driven by said NFC module with the modulated carrier signal. The device includes an RF front end coupled between said NFC module and said antenna circuit. The RF front end includes a balanced to unbalanced (Balun) transformer and a tuning capacitor to provide a function of an electromagnetic compatibility (EMC) filter. A powered by the field circuit of the NFC device is adapted to harvest energy from an external field to power said NFC device. The power by the field circuit is coupled to said Balun transformer via one or more impedance elements.

    System and method for configurable low-power wake-up detection
    39.
    发明授权
    System and method for configurable low-power wake-up detection 有权

    公开(公告)号：US10945206B2

    公开(公告)日：2021-03-09

    申请号：US16211228

    申请日：2018-12-05

    Applicant: NXP B.V.

    Inventor： Gernot Hueber ,  Pravin Pandurang Manerker

    IPC: H04W4/00 ,  H04W52/02

    Abstract: This specification discloses methods and devices to enable high resolution configuration of a low-power wake-up detector (LP Detector), which in turn is implemented allowing for very coarse threshold detection (i.e., the detectable threshold levels are widely spaced apart from each other) due to power consumption and design reasons. Based on this invention, the detection resolution can be enhanced from 10 mV steps to

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