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公开(公告)号：US20200083746A1
公开(公告)日：2020-03-12
申请号：US16213852
申请日：2018-12-07
Applicant: Apple Inc.
Inventor： Gianpaolo Lisi , Madhusudanan Keezhveedi Sampath , Nan Liu , Tianqi Li , YiBo Liu , Yasin Aalipour
Abstract: An inductive power transmitter is provided that includes a power transmitting coil which includes transmission circuitry coupled to the power transmitting coil. The inductive power transmitter is configured to produce an inductive power transfer (IPT) signal having an IPT power so that the power transmitting coil generates an IPT field to transfer wireless power to a power receiving coil of an inductive power receiver. The inductive power transmitter includes detection circuitry coupled to the transmission circuitry and is configured to detect one or more indications of a magnetic field strength of a leakage IPT field. The inductive power transmitter includes control circuitry configured to control the transmission circuitry while the transmission circuitry is increasing the IPT power towards a charge level sufficient to charge a battery associated with the inductive power receiver at a target charge rate.
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公开(公告)号：US11190050B2
公开(公告)日：2021-11-30
申请号：US16213852
申请日：2018-12-07
Applicant: Apple Inc.
Inventor： Gianpaolo Lisi , Madhusudanan Keezhveedi Sampath , Nan Liu , Tianqi Li , YiBo Liu , Yasin Aalipour
Abstract: An inductive power transmitter is provided that includes a power transmitting coil which includes transmission circuitry coupled to the power transmitting coil. The inductive power transmitter is configured to produce an inductive power transfer (IPT) signal having an IPT power so that the power transmitting coil generates an IPT field to transfer wireless power to a power receiving coil of an inductive power receiver. The inductive power transmitter includes detection circuitry coupled to the transmission circuitry and is configured to detect one or more indications of a magnetic field strength of a leakage IPT field. The inductive power transmitter includes control circuitry configured to control the transmission circuitry while the transmission circuitry is increasing the IPT power towards a charge level sufficient to charge a battery associated with the inductive power receiver at a target charge rate.
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公开(公告)号：US09497054B1
公开(公告)日：2016-11-15
申请号：US14829418
申请日：2015-08-18
Applicant: Apple Inc.
Inventor： Tianqi Li , Cheung-Wei Lam , Vaneet Pathak
CPC classification number: H04B1/0475 , H04B15/02 , H04L25/0264
Abstract: Electronic devices may include unshielded connectors that convey radio-frequency signals with external devices. A first electronic device may include transmitter circuitry that transmits radio-frequency signals to phase shifting circuitry. The phase shifting circuitry may pass the radio-frequency signals to a first conductive contact of a connector on the first device, may generate modified signals by applying a phase shift of approximately 180 degrees to the radio-frequency signals, and may provide the modified signals to a second conductive contact on the connector. To mitigate undesirable resonance and radiation at the connector, the connector may concurrently convey the radio-frequency signals and the modified signals to an external device over the first and second contacts while mating contacts on a connector of the external electronic device are in electrical contact with the first and second conductive contacts.
Abstract translation: 电子设备可以包括用外部设备传送射频信号的非屏蔽连接器。 第一电子设备可以包括将射频信号发射到相移电路的发射机电路。 相移电路可以将射频信号传递到第一设备上的连接器的第一导电触点，可以通过向射频信号施加大约180度的相移来产生修改的信号，并且可以提供修改的信号 到连接器上的第二导电接触。 为了减轻连接器处的不期望的共振和辐射，连接器可以将外部设备的射频信号和修改的信号同时传送到第一和第二触点上，而外部电子设备的连接器上的配合触点与 第一和第二导电触点。
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