US 12,322,869 B2
Smart RF lensing: efficient, dynamic and mobile wireless power transfer
Kaushik Sengupta, Princeton, NJ (US); and Seyed Ali Hajimiri, La Canada, CA (US)
Assigned to California Institute of Technology, Pasadena, CA (US)
Filed by California Institute of Technology, Pasadena, CA (US)
Filed on Nov. 14, 2022, as Appl. No. 17/986,807.
Application 17/986,807 is a continuation of application No. 15/942,211, filed on Mar. 30, 2018, granted, now 11,502,552.
Application 15/942,211 is a continuation of application No. 14/078,489, filed on Nov. 12, 2013, granted, now 10,367,380, issued on Jul. 30, 2019.
Claims priority of provisional application 61/724,638, filed on Nov. 9, 2012.
Prior Publication US 2023/0238713 A1, Jul. 27, 2023
Int. Cl. H01Q 21/22 (2006.01); H02J 50/23 (2016.01); H02J 50/40 (2016.01); H02J 50/60 (2016.01); H02J 50/80 (2016.01); H02J 50/90 (2016.01)
CPC H01Q 21/225 (2013.01) [H02J 50/23 (2016.02); H02J 50/40 (2016.02); H02J 50/402 (2020.01); H02J 50/80 (2016.02); H02J 50/90 (2016.02); H02J 50/60 (2016.02)] 19 Claims
OG exemplary drawing
 
1. A radio frequency (RF) lens comprising:
a first tile comprising a first plurality of radiators configured to generate and radiate electromagnetic waves; and
a second tile comprising a second plurality of radiators configured to radiate electromagnetic waves, wherein said first and second tiles are positioned adjacent one another to form an array and operate in concert to wirelessly power a first device positioned away from the RF lens, wherein said first tile comprises a first plurality of locked-loop circuits each associated with a different one of the first plurality of radiators, and said second tile comprises a second plurality of locked-loop circuits each associated with a different one of the second plurality of radiators, wherein said first and second plurality of locked-loop circuits are locked to a same reference clock signal.