US 11,942,796 B2
Wireless power for sensor arrays
Sudipto Chakraborty, Plano, TX (US); and Rajiv Joshi, Yorktown Heights, NY (US)
Assigned to INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US)
Filed by INTERNATIONAL BUSINESS MACHINES CORPORATION, Armonk, NY (US)
Filed on Feb. 10, 2021, as Appl. No. 17/172,419.
Prior Publication US 2022/0255362 A1, Aug. 11, 2022
Int. Cl. H02J 50/20 (2016.01); H02J 7/00 (2006.01); H02J 7/04 (2006.01); H02J 50/10 (2016.01); H02J 50/40 (2016.01); H02J 50/80 (2016.01)
CPC H02J 50/40 (2016.02) [H02J 7/0013 (2013.01); H02J 7/04 (2013.01); H02J 50/10 (2016.02); H02J 50/80 (2016.02)] 20 Claims
OG exemplary drawing
 
1. A wireless power system comprising:
a phase locked loop (PLL) providing an input signal tuned in frequency;
a plurality of dividers coupled to the PLL to divide the frequency of the input signal, wherein the plurality of dividers provides a plurality of phases for the input signal;
a plurality of phase interpolators electrically connected to the plurality of dividers to generate multiple phases based on the input signal, each divider associated with a group of phase interpolators; and
a plurality of drivers electrically connected to the plurality of phase interpolators, the plurality of phase interpolators selecting phases from the plurality of phases for the input signal to digitally direct a plurality of output signals from the plurality of drivers each having a different frequency to a plurality of sensor clusters, each sensor cluster operating at a different frequency, wherein electromagnetic coupling is used for near field sensor clusters and radiating elements are used for far field sensor clusters.