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公开(公告)号：US10477741B1
公开(公告)日：2019-11-12
申请号：US15019607
申请日：2016-02-09
申请人： Apple Inc.
发明人： Mun Soo Bae , Bing Jiang , Haejoon Jung , Indranil S. Sen , Mohit Narang , Ruben Caballero
IPC分类号： H05K9/00
摘要： An inductive power transmission system electromagnetic field shielding apparatus includes an enclosure. The enclosure is configured to surround an electronic device and an inductive power transmitter that inductively transmits power to the electronic device. A communication window or high pass filter is formed in the enclosure. The communication window may include an arrangement of one or more conductive materials defining one or more apertures. The enclosure and the communication window block passage of magnetic flux generated by the inductive power transmitter. The communication window allows passage of communication transmissions associated with the electronic device.
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公开(公告)号：US10651670B1
公开(公告)日：2020-05-12
申请号：US15491899
申请日：2017-04-19
申请人： Apple Inc.
发明人： Bing Jiang , Indranil S. Sen , Mohit Narang , Mun Soo Bae
摘要： An electronic device may transfer power wirelessly to an external device. The electronic device may include a housing having a cavity. A cover layer may be formed over the cavity. An array of antennas may be formed within the cavity. Antennas in the array may transfer wireless charging signals to the external device through the cover layer to charge the external device while the external device is in contact with the cover layer. Impedance detection circuitry may gather impedance matching information from each antenna in the array. Control circuitry may select an antenna having a best impedance match with the external device for transmitting the wireless charging signals. One or more antennas in the array may form a block filter for the selected antenna. Multiple near-field coupled antennas in the array may be selected for transmitting the charging signals to focus the charging signals on the external device.
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