ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,401,997, issued on Aug. 26, was assigned to QDAComm LLC (Raleigh, N.C.).

"Physical layer security" was invented by Paulo Carvalho (Lisbon, Portugal) and Rui Dinis (Costa da Caparica, Portugal).

According to the abstract* released by the U.S. Patent & Trademark Office: "Systems and methods of performing physical layer security are presented. In one exemplary embodiment, an electronic device includes a set of amplifier circuitry operable to output a set of output signals that collectively represents an amplified sample of an input signal having information. Further, the set of output signals corresponds to a set of bandpass components that is secured by a certain physical layer securit...