ALEXANDRIA, Va., March 19 -- United States Patent no. 12,255,674, issued on March 18, was assigned to QUALCOMM Inc. (San Diego).

"Constant-phase attenuator techniques in radio frequency front end (RFFE) amplifiers" was invented by Xingyi Hua (San Diego), Bassel Hanafi (San Diego), Karthik Tripurari Jayaraman (San Diego) and Francesco Gatta (San Diego).

According to the abstract* released by the U.S. Patent & Trademark Office: "Aspects of the disclosure relate to devices, wireless communication apparatuses, methods, and circuitry implementing a low noise amplifier (LNA) with phase-shifting circuitry to achieve a continuous phase at the output of the LNA. One aspect is an amplifier including a high gain active path comprising active circuit...