Patent ID: 11923619
Assignee: QUALCOMM INCORPORATED
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A method of wireless communication at a device, comprising:
receiving at least one activation signal to activate one or more input ports of a plurality of input ports of one or more Butler matrices;
outputting signals from all output ports of the one or more Butler matrices based on activation of the one or more input ports, wherein the signals output from the output ports have varying phase shifts relative to each other;
phase shifting, via a plurality of phase shifters respectively coupled to the output ports, the signals output from the output ports, wherein the phase shifted signals have further varying phase shifts relative to each other and a phase difference between adjacent phase shifted signals;
receiving, at each one of a plurality of hybrid couplers respectively coupled to the plurality of phase shifters, a phase shifted signal from a respective phase shifter, wherein each one of the plurality of hybrid couplers is situated external to the one or more Butler matrices and between the plurality of phase shifters and a plurality of antenna elements; and
outputting, from each one of the plurality of hybrid couplers, two or more signals based on the phase shifted signal received from the respective phase shifter, wherein the two or more signals have a phase shift between each other.