ALEXANDRIA, Va., May 19 -- United States Patent no. 12,633,661, issued on May 19, was assigned to Amazon Technologies Inc. (Seattle).

"Energy efficient phase shifting in digital beamforming circuits for phased array antennas" was invented by Sunny Sharma (Shoreline, Wash.) and Jung Joo Lee (Sunnyvale, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Technologies directed to energy efficient phase shifting in digital beamforming in phased array antennas in communication systems are described. Digital signal processing (DSP) circuitry includes a first phase shifter that generates second data by phase shifting first data according to a rotation-based operation without multiplication of the second data, a s...