ALEXANDRIA, Va., April 9 -- United States Patent no. 12,273,132, issued on April 8, was assigned to Renesas Electronics America Inc. (Milpitas, Calif.).

"Spurious emissions detection and calibration using envelope detector" was invented by Himanshu Khatri (San Diego), Samet Zihir (San Diego) and Tumay Kanar (San Diego).

According to the abstract* released by the U.S. Patent & Trademark Office: "Methods and systems for operating a transceiver are described. A transceiver can include an upconverting mixer, a downconverting mixer, a controller, and an envelope detector. The upconverting mixer can mix an input signal with a local oscillator (LO) signal to generate a transmitter signal. The envelope detector can receive the transmitter signal ...