US 11,658,719 B2
Hybrid beamforming with a butler matrix
Idan Michael Horn, Hod Hasharon (IL); and Shay Landis, Hod Hasharon (IL)
Assigned to QUALCOMM Incorporated, San Diego, CA (US)
Filed by QUALCOMM Incorporated, San Diego, CA (US)
Filed on Jun. 17, 2021, as Appl. No. 17/350,564.
Claims priority of provisional application 63/043,947, filed on Jun. 25, 2020.
Prior Publication US 2021/0409087 A1, Dec. 30, 2021
Int. Cl. H04B 7/06 (2006.01)
CPC H04B 7/0686 (2013.01) [H04B 7/0617 (2013.01); H04B 7/0639 (2013.01); H04B 7/0663 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A method of wireless communication performed by a wireless communication device, comprising:
selecting a set of terminals of a Butler matrix to use for transmitting or receiving one or more communications via one or more streams associated with one or more beams; and
performing hybrid beamforming using the Butler matrix,
wherein the performing the hybrid beamforming using the Butler matrix comprises:
receiving the one or more streams via a set of antenna elements coupled to the Butler matrix,
providing, based on receiving the one or more streams via the set of antenna elements, the one or more streams to the Butler matrix,
providing, based on providing the one or more streams to the Butler matrix, the one or more streams to a switch,
providing, based on providing the one or more streams to the switch, the one or more streams to one or more mixers,
wherein the one or more streams are combined via the one or more mixers to form one or more combined streams,
providing, based on providing the one or more streams to the one or more mixers, the one or more combined streams to one or more analog to digital converters, and
performing, based on providing the one or more combined streams to the one or more analog to digital converters, digital beamforming on one or more overlapping streams and not on one or more non-overlapping streams of the one or more combined streams.