ALEXANDRIA, Va., June 9 -- United States Patent no. 12,289,149, issued on April 29, was assigned to Telefonaktiebolaget LM Ericsson (Publ) (Stockholm).
"Hybrid remote electrical tilt (HRET)" was invented by Martin Da Silveira (Ottawa), Neil McGowan (Stittsville, Canada) and Francis Marion (Gatineau, Canada).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method and antenna system for achieving remote electrical tilt by a hybrid use of analog and digital phase shifting are disclosed. According to one aspect, a hybrid remote electrical tilt (HRET) antenna system includes a digital beamformer configured to apply a first set of at least one phase shift to each antenna subarray of at least one group of at least o...