Invention Grant
- Patent Title: Wireless power systems including determination of channel transfer function from backscatter signals
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Application No.: US16651984Application Date: 2018-09-28
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Publication No.: US11133717B2Publication Date: 2021-09-28
- Inventor: Matthew S. Reynolds , Daniel Arnitz
- Applicant: University of Washington
- Applicant Address: US WA Seattle
- Assignee: University of Washington
- Current Assignee: University of Washington
- Current Assignee Address: US WA Seattle
- Agency: Dorsey & Whitney LLP
- International Application: PCT/US2018/053513 WO 20180928
- International Announcement: WO2019/067956 WO 20190404
- Main IPC: H02J50/80
- IPC: H02J50/80 ; H02J50/20 ; H02J50/40 ; H02J50/00 ; H02J7/00 ; H02J7/02
Abstract:
Examples described herein utilize a backscatter signal provided by a wirelessly powered device to estimate channel information, (e.g., a channel transfer function) between the wirelessly powered device and a transmitter system. The channel information may be used to optimize MIMO power transfer for linear as well as nonlinear backscatter devices. Examples of die method ‘may shift some or all of the power cost and complexity of coherent channel measurements from the WFD to the transmitters), and allow WPT optimization to milliwatt- or microwatt-class wirelessly powered devices.
Public/Granted literature
- US20200266673A1 WIRELESS POWER SYSTEMS INCLUDING DETERMINATION OF CHANNEL TRANSFER FUNCTION FROM BACKSCATTER SIGNALS Public/Granted day:2020-08-20
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