Invention Grant
- Patent Title: System and method for a variable impedance transmitter path for charging wireless devices
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Application No.: US13648552Application Date: 2012-10-10
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Publication No.: US09748790B2Publication Date: 2017-08-29
- Inventor: Yael Maguire
- Applicant: Facebook, Inc.
- Applicant Address: US CA Menlo Park
- Assignee: Facebook, Inc.
- Current Assignee: Facebook, Inc.
- Current Assignee Address: US CA Menlo Park
- Agency: Baker Botts L.L.P.
- Main IPC: H02J17/00
- IPC: H02J17/00 ; H02J7/00 ; H02J7/02 ; H04B5/00
Abstract:
In one embodiment, a method includes wirelessly coupling a transmitter to the wireless device; determining a first power transfer value of a signal transmitted from the transmitter to the wireless device with a first transmit impedance; determining a second power transfer value of the signal transmitted from the transmitter to the wireless device with a second transmit impedance; and selecting one of the first transmit impedance and the second transmit impedance based on the first power transfer value and the second power transfer value.
Public/Granted literature
- US20130181517A1 System and Method for a Variable Impedance Transmitter Path for Charging Wireless Devices Public/Granted day:2013-07-18
Information query
