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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.:

US 9825358 B1

PDFFull Text
Date of Patent:
Nov. 21, 2017

Filed:

Apr. 21, 2014

System wirelessly transferring power to a target device over a modeled transmission pathway without exceeding a radiation limit for human beings

Applicant:

Elwha Llc, Bellevue, WA (US);

Inventors:

Pai-Yen Chen, Bellevue, WA (US);

Tom Driscoll, San Diego, CA (US);

Siamak Ebadi, Bellevue, WA (US);

John Desmond Hunt, Knoxville, TN (US);

Nathan Ingle Landy, Mercer Island, WA (US);

Melroy Machado, Seattle, WA (US);

Milton Perque, Jr., Seattle, WA (US);

David R. Smith, Durham, NC (US);

Yaroslav A. Urzhumov, Bellevue, WA (US);

Assignee:

Elwha LLC;

Attorney:
Primary Examiner:

Jared Fureman

Assistant Examiner:

Esayas Yeshaw

Int. Cl.
CPC ...
H01F 27/42 (2006.01); H01F 37/00 (2006.01); H01F 38/00 (2006.01); H01Q 3/00 (2006.01); H01Q 3/24 (2006.01); H01Q 3/46 (2006.01); H01Q 15/14 (2006.01);
U.S. Cl.
CPC ...
H01Q 3/00 (2013.01); H01Q 3/247 (2013.01); H01Q 3/46 (2013.01); H01Q 15/148 (2013.01);
Abstract

Described embodiments include a system, method, and apparatus. The system includes an antenna comprising a sub-Nyquist holographic aperture configured to define selectable arbitrary complex radiofrequency electromagnetic fields on a surface of the antenna. A mapping engine models an environment within a space radiateable by the antenna. The environment includes a target device and a human being. An optimization circuit selects responsive to the model of the environment a power transmission regime. The power transmission regime includes radiation pattern shaped to wirelessly transfer electromagnetic power from the antenna to the target device without exceeding a radiation exposure limit for humans. A gain definition circuit selects a complex radiofrequency electromagnetic field implementing the selected power transmission regime from the at least two selectable arbitrary complex radiofrequency electromagnetic fields. An antenna controller defines the selected arbitrary complex radiofrequency electromagnetic field in the sub-Nyquist holographic aperture.

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