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

Claim 0:
1. An apparatus for wireless communication at a device, comprising:
one or more Butler matrices including input ports and output ports, wherein the one or more Butler matrices are configured to cause the device to:
receive at least one activation signal to activate one or more of the input ports; and
output signals from all of the output ports based on one or more activated input ports, wherein the signals output from the output ports have varying phase shifts relative to each other;

a plurality of phase shifters respectively coupled to the output ports of the one or more Butler matrices and configured to cause the device to respectively phase shift the signals output from the output ports, wherein the phase shifted signals are configured to have further varying phase shifts relative to each other and a phase difference between adjacent phase shifted signals; and
a plurality of hybrid couplers respectively coupled to the plurality of phase shifters, 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 wherein each hybrid coupler is configured to cause the device to:
receive a phase shifted signal from a respective phase shifter; and
output 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.