Invention Grant
- Patent Title: System and method for a variable impedance transmitter path for charging wireless devices
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Application No.: US15653229Application Date: 2017-07-18
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Publication No.: US10910883B2Publication Date: 2021-02-02
- 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: Van Pelt, Yi & James LLP
- Main IPC: H02J7/02
- IPC: H02J7/02 ; H02J50/80 ; H02J50/40 ; H02J50/20 ; H04B5/00
Abstract:
In one embodiment, a method includes wirelessly coupling a transmitter to a 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 the first transmit impedance based on received power-level information indicating that the first power transfer value is greater than the second power transfer value.
Public/Granted literature
- US20170317520A1 SYSTEM AND METHOD FOR A VARIABLE IMPEDANCE TRANSMITTER PATH FOR CHARGING WIRELESS DEVICES Public/Granted day:2017-11-02
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