The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 28, 2021
Filed:
Sep. 28, 2018
Wireless power systems including determination of channel transfer function from backscatter signals
Applicant:
University of Washington, Seattle, WA (US);
Inventors:
Matthew S. Reynolds, Seattle, WA (US);
Daniel Arnitz, Seattle, WA (US);
Assignee:
University of Washington, Seattle, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02J 50/80 (2016.01); H02J 50/20 (2016.01); H02J 50/40 (2016.01); H02J 50/00 (2016.01); H02J 7/00 (2006.01); H02J 7/02 (2016.01);
U.S. Cl.
CPC ...
H02J 50/80 (2016.02); H02J 50/001 (2020.01); H02J 50/20 (2016.02); H02J 50/40 (2016.02); H02J 7/00034 (2020.01); H02J 7/02 (2013.01);
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.