Antenna device and apparatus including the same

    公开(公告)号:US10601134B2

    公开(公告)日:2020-03-24

    申请号:US16021506

    申请日:2018-06-28

    Applicant: WITS Co., Ltd.

    Abstract: An antenna device includes: a substrate including a base layer, a first layer disposed on one surface of the base layer, a second layer disposed on another surface of the base layer, at least one first coil pattern disposed on the first layer, and at least one second coil pattern disposed on the second layer; and a magnetic body. A first region of the substrate is disposed on one surface of the magnetic body, and a second region of the substrate is disposed on another surface of the magnetic body. The at least one first coil pattern and the at least one second coil pattern are connected to each other to form an antenna coil having a solenoid shape disposed around the magnetic body.

    Information transmitter
    8.
    发明授权

    公开(公告)号:US10560155B2

    公开(公告)日:2020-02-11

    申请号:US15684014

    申请日:2017-08-23

    Applicant: WITS Co., Ltd.

    Abstract: An information transmitter includes a transmitting coil configured to receive a coil voltage to generate a magnetic field; and a signal generator configured to receive a direct current (DC) voltage and operating switches to apply the coil voltage to the transmitting coil, for a first time constant in a first current path, wherein the coil voltage includes a first value, and for a second time constant in a second current path, wherein the coil voltage includes a second value smaller than the first value, and wherein the first time constant and second time constant are different from each other.

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