US 11,670,969 B2
Wireless power transmission system capable of changing power transmission frequency
Hatem Ibrahim Munir Zeine, Woodinville, WA (US); and Alireza Pourghorban Saghati, Redmond, WA (US)
Assigned to Ossia Inc., Redmond, WA (US)
Filed by Ossia Inc., Redmond, WA (US)
Filed on Jan. 10, 2020, as Appl. No. 16/740,080.
Claims priority of provisional application 62/794,553, filed on Jan. 18, 2019.
Prior Publication US 2020/0235611 A1, Jul. 23, 2020
Int. Cl. H02J 50/20 (2016.01); H02J 7/02 (2016.01); H02J 50/40 (2016.01); H02J 50/80 (2016.01)
CPC H02J 50/20 (2016.02) [H02J 7/02 (2013.01); H02J 50/402 (2020.01); H02J 50/80 (2016.02)] 20 Claims
OG exemplary drawing
 
1. A wireless power delivery system, comprising:
an array of antenna elements positioned on a surface of a substrate, wherein a first antenna element of the array of antenna elements transmits first power at a first frequency and a second antenna element of the array of antenna elements transmits second power at a second frequency, different than the first frequency; and
an antenna management component that:
receives, via the array of antenna elements, respective portions of a wireless beacon signal that has been transmitted by a wireless charging device,
determines characteristics of the respective portions of the wireless beacon signal measured by respective antenna elements of the array of antenna elements, the characteristics comprising complex conjugates of the wireless beacon signal,
based on the characteristics of the respective portions of the wireless beacon signal measured by the respective antenna elements of the array of antenna elements, determines a change in condition has manifested according to a defined change criterion that triggers an analysis of whether to switch at least one of the first antenna element or the second antenna element on or off to change a frequency emitted by the wireless power delivery system to the wireless charging device, resulting in a modified frequency, and
in response to determining that at least one of the first antenna element or the second antenna element is to switch on or off, switches on or off the at least one of the first antenna element or the second antenna element and delivers power according to the modified frequency, as a result of which a charging performance of the wireless charging device is increased, wherein the analysis comprises the analysis of a predicted movement of a receiving element of the wireless charging device.