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公开(公告)号：US10739871B2
公开(公告)日：2020-08-11
申请号：US15909769
申请日：2018-03-01
申请人： Apple Inc.
发明人： Bing Jiang , Blake R. Marshall , Indranil S. Sen , Liquan Tan , Reza Nasiri Mahalati , Yi Jiang , Mohit Narang
IPC分类号： G06F3/0354 , H02J50/05 , H04B5/00 , G06F3/041 , H02J7/02
摘要： A wireless power transmission system may include a wireless power transmitting device such as a tablet computer and a wireless power receiving device such as a computer stylus. A wireless power transmitting capacitor electrode may be formed in the tablet computer. A wireless power receiving capacitor electrode may be formed in the computer stylus. The transmitting capacitor electrode may be driven by a drive signal having a frequency of 900 MHz or greater to produce wireless power. The wireless power may be transmitted from the transmitting capacitor electrode to the receiving capacitor electrode on the stylus via near field capacitive coupling. The transmitting and receiving capacitor electrodes may each include conductive traces on dielectric substrates. The conductive traces may follow meandering paths to maximize the possible capacitive coupling efficiency between the capacitor electrodes and thus the end-to-end charging efficiency of the wireless power transmission system.
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公开(公告)号：US11061490B2
公开(公告)日：2021-07-13
申请号：US16913948
申请日：2020-06-26
申请人： Apple Inc.
发明人： Bing Jiang , Blake R. Marshall , Indranil S. Sen , Liquan Tan , Reza Nasiri Mahalati , Yi Jiang , Mohit Narang
IPC分类号： G06F3/0354 , H02J50/05 , H04B5/00
摘要： A wireless power transmission system may include a wireless power transmitting device such as a tablet computer and a wireless power receiving device such as a computer stylus. A wireless power transmitting capacitor electrode may be formed in the tablet computer. A wireless power receiving capacitor electrode may be formed in the computer stylus. The transmitting capacitor electrode may be driven by a drive signal having a frequency of 900 MHz or greater to produce wireless power. The wireless power may be transmitted from the transmitting capacitor electrode to the receiving capacitor electrode on the stylus via near field capacitive coupling. The transmitting and receiving capacitor electrodes may each include conductive traces on dielectric substrates. The conductive traces may follow meandering paths to maximize the possible capacitive coupling efficiency between the capacitor electrodes and thus the end-to-end charging efficiency of the wireless power transmission system.
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公开(公告)号：US10714983B2
公开(公告)日：2020-07-14
申请号：US15902875
申请日：2018-02-22
申请人： Apple Inc.
发明人： Bing Jiang , Martin Schauer , Indranil S. Sen , Jouya Jadidian , Mark D. Neumann , Mohit Narang , Vaneet Pathak , Yi Jiang
摘要： A wireless power system may use a wireless power transmitting device to transmit wireless power to a wireless power receiving device. The wireless power transmitting device may have microwave antennas that extend along an axis in a staggered arrangement. In the staggered arrangement, the microwave antennas are positioned on alternating sides of the axis. Each microwave antenna is elongated along a dimension that is perpendicular to the axis. Multiple antennas may overlap a wireless power receiving antenna in the wireless power receiving device. Control circuitry may use oscillator and amplifier circuitry to provide antennas that have been overlapped by the wireless power receiving antenna with drive signals. The drive signals may be adjusted based on feedback from the wireless power receiving device to enhance power transmission efficiency. The system may have a wireless power transmitting device with inductive wireless power transmitting coils.
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公开(公告)号：US20190199137A1
公开(公告)日：2019-06-27
申请号：US15902875
申请日：2018-02-22
申请人： Apple Inc.
发明人： Bing Jiang , Martin Schauer , Indranil S. Sen , Jouya Jadidian , Mark D. Neumann , Mohit Narang , Vaneet Pathak , Yi Jiang
摘要： A wireless power system may use a wireless power transmitting device to transmit wireless power to a wireless power receiving device. The wireless power transmitting device may have microwave antennas that extend along an axis in a staggered arrangement. In the staggered arrangement, the microwave antennas are positioned on alternating sides of the axis. Each microwave antenna is elongated along a dimension that is perpendicular to the axis. Multiple antennas may overlap a wireless power receiving antenna in the wireless power receiving device. Control circuitry may use oscillator and amplifier circuitry to provide antennas that have been overlapped by the wireless power receiving antenna with drive signals. The drive signals may be adjusted based on feedback from the wireless power receiving device to enhance power transmission efficiency. The system may have a wireless power transmitting device with inductive wireless power transmitting coils.
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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：US20200326790A1
公开(公告)日：2020-10-15
申请号：US16913948
申请日：2020-06-26
申请人： Apple Inc.
发明人： Bing Jiang , Blake R. Marshall , Indranil S. Sen , Liquan Tan , Reza Nasiri Mahalati , Yi Jiang , Mohit Narang
IPC分类号： G06F3/0354 , H02J50/05 , H04B5/00 , G06F3/041
摘要： A wireless power transmission system may include a wireless power transmitting device such as a tablet computer and a wireless power receiving device such as a computer stylus. A wireless power transmitting capacitor electrode may be formed in the tablet computer. A wireless power receiving capacitor electrode may be formed in the computer stylus. The transmitting capacitor electrode may be driven by a drive signal having a frequency of 900 MHz or greater to produce wireless power. The wireless power may be transmitted from the transmitting capacitor electrode to the receiving capacitor electrode on the stylus via near field capacitive coupling. The transmitting and receiving capacitor electrodes may each include conductive traces on dielectric substrates. The conductive traces may follow meandering paths to maximize the possible capacitive coupling efficiency between the capacitor electrodes and thus the end-to-end charging efficiency of the wireless power transmission system.
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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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公开(公告)号：US20180314349A1
公开(公告)日：2018-11-01
申请号：US15909769
申请日：2018-03-01
申请人： Apple Inc.
发明人： Bing Jiang , Blake R. Marshall , Indranil S. Sen , Liquan Tan , Reza Nasiri Mahalati , Yi Jiang , Mohit Narang
IPC分类号： G06F3/0354 , G06F3/041 , H04B5/00 , H02J50/05
摘要： A wireless power transmission system may include a wireless power transmitting device such as a tablet computer and a wireless power receiving device such as a computer stylus. A wireless power transmitting capacitor electrode may be formed in the tablet computer. A wireless power receiving capacitor electrode may be formed in the computer stylus. The transmitting capacitor electrode may be driven by a drive signal having a frequency of 900 MHz or greater to produce wireless power. The wireless power may be transmitted from the transmitting capacitor electrode to the receiving capacitor electrode on the stylus via near field capacitive coupling. The transmitting and receiving capacitor electrodes may each include conductive traces on dielectric substrates. The conductive traces may follow meandering paths to maximize the possible capacitive coupling efficiency between the capacitor electrodes and thus the end-to-end charging efficiency of the wireless power transmission system.
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