US 12,136,772 B2
Self-calibrating phased-array transceiver
Austin C. Fikes, Pasadena, CA (US); Behrooz Abiri, Pasadena, CA (US); Florian Bohn, Pasadena, CA (US); Seyed Ali Hajimiri, La Canada, CA (US); Christopher Ian Walker, Berkeley, CA (US); and David Elliot Williams, Pasadena, CA (US)
Assigned to California Institute of Technology, Pasadena, CA (US)
Filed by California Institute of Technology, Pasadena, CA (US)
Filed on Feb. 28, 2022, as Appl. No. 17/683,100.
Application 17/683,100 is a continuation of application No. 15/997,617, filed on Jun. 4, 2018, granted, now 11,264,715.
Claims priority of provisional application 62/514,319, filed on Jun. 2, 2017.
Prior Publication US 2023/0109403 A1, Apr. 6, 2023
Int. Cl. H01Q 3/26 (2006.01)
CPC H01Q 3/267 (2013.01) 9 Claims
OG exemplary drawing
 
1. A self-calibrating phased-array comprising a controller and N transceivers each comprising a receiver and a transmitter, N being an integer greater than 1, the phased array being configured to:
transmit from each element i of the array during an ith time period an ith radio signal, wherein i is an integer ranging from 1 to N;
receive the ith radio signal at each of at least a subset of remaining elements of the array during the ith time period;
recover delay values associated with the radio signals received by the at least first subset; and
determine a phase of a reference signal received by each of the at least first subset from the recovered delay values, said phase being relative to a reference phase of a reference clock as received by the ith element of the array.