US 11,659,355 B2
Dynamic focusing and tracking for wireless power transfer arrays
Seyed Ali Hajimiri, Pasadena, CA (US); Behrooz Abiri, Pasadena, CA (US); Florian Bohn, Pasadena, CA (US); and Farhud Tebbi, Pasadena, CA (US)
Assigned to GuRu Wireless, Inc., Pasadena, CA (US)
Filed by GuRu Wireless, Inc., Pasadena, CA (US)
Filed on Nov. 20, 2020, as Appl. No. 17/100,762.
Application 17/100,762 is a continuation of application No. 16/719,878, filed on Dec. 18, 2019, granted, now 10,880,688.
Claims priority of provisional application 62/781,514, filed on Dec. 18, 2018.
Prior Publication US 2021/0076159 A1, Mar. 11, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 4/80 (2018.01); H04W 4/02 (2018.01); H02J 50/20 (2016.01); H04B 5/00 (2006.01); H02J 50/40 (2016.01)
CPC H04W 4/025 (2013.01) [H02J 50/20 (2016.02); H02J 50/40 (2016.02); H04B 5/0037 (2013.01); H04W 4/80 (2018.02)] 20 Claims
OG exemplary drawing
 
1. A wireless power transfer system, comprising:
a wireless power generating unit (GU) comprising:
a plurality of RF power sources, where the RF power sources are synchronized and each RF power source comprises at least one antenna element;
control circuitry configured to adjust at least the phases of the RF power sources;
a processing system configured to generate control signals to control at least the phase of the RF power sources via the control circuitry; and
a receiver configured to receive messages from at least one recovery unit (RU);
wherein the processing system controls the RF power sources by:
sending control signals to the control circuitry to perform a plurality of sweeps, where each sweep comprises:
performing a phase sweep across a phase sweep range at a plurality of phase step increments with respect to a first group of RF power sources,
where the first group of RF power sources comprises a plurality of RF power sources;
receiving via the receiver at least one message from a RU, where each of the at least one message contains a report based upon received power measurements made by the RU during at least one of the plurality of sweeps; and
sending control signals to the control circuitry of the plurality of RF power sources to control the RF power sources based at least in part upon the received at least one message from the RU.