NFC Antenna Device in a Metallic Environment

    公开(公告)号:US20190140358A1

    公开(公告)日:2019-05-09

    申请号:US16180744

    申请日:2018-11-05

    Abstract: A communication device includes a first near field communication (NFC) antenna configured to have a first resonance frequency, and a metal chassis forming part of an outer surface of the communication device. The metal chassis forms an auxiliary antenna, where the auxiliary antenna is configured to be powered by the first NFC antenna by electromagnetic induction and is also configured to have a resonance frequency substantially equal to the first resonance frequency.

    Wireless communication device and method

    公开(公告)号:US10896300B2

    公开(公告)日:2021-01-19

    申请号:US16415352

    申请日:2019-05-17

    Abstract: A Near Field Communication (NFC) reader can wirelessly cooperate with a rectangular prism-shaped transponder having an NFC transponder antenna. The NFC reader includes an NFC controller, a matching network coupled to the NFC controller, and a receptacle capable of at least partially holding the transponder. The receptacle has a bottom wall, a lateral wall and a shape designed such that the transponder cannot be placed in the receptacle in a direction where the NFC transponder antenna is parallel to the bottom wall. The receptacle includes first and second NFC reader antennas located in two non-parallel parts of the lateral wall and a connection coupling the first and second reader antennas to the matching network.

    NFC antenna device in a metallic environment

    公开(公告)号:US11043751B2

    公开(公告)日:2021-06-22

    申请号:US16180744

    申请日:2018-11-05

    Abstract: A communication device includes a first near field communication (NFC) antenna configured to have a first resonance frequency, and a metal chassis forming part of an outer surface of the communication device. The metal chassis forms an auxiliary antenna, where the auxiliary antenna is configured to be powered by the first NFC antenna by electromagnetic induction and is also configured to have a resonance frequency substantially equal to the first resonance frequency.

    NFC antenna in a mobile device
    7.
    发明授权

    公开(公告)号:US10917137B2

    公开(公告)日:2021-02-09

    申请号:US16371622

    申请日:2019-04-01

    Abstract: An electronic device includes a back cover, a display, a middle frame sandwiched between the display and the back cover, and a near field communications (NFC) antenna incorporated within the middle frame. An electronic board is positioned within the middle frame, and includes an NFC controller and a matching network coupled to the NFC controller. The matching network is configured to match impedances between the NFC antenna and the NFC controller.

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