ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,483,217, issued on Nov. 25, was assigned to Apple Inc. (Cupertino, Calif.).
"Variable gain amplifier with subthreshold biasing" was invented by Kefei Wu (San Diego), Morteza Nick (San Francisco), David M Signoff (Santa Clara, Calif.) and Preeti S Mulage (Saratoga, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "This disclosure is directed to reducing output voltage distortions of Variable Gain Amplifiers (VGAs). A VGA may include a number of amplifiers each providing a portion of a total gain of the VGA. For example, a processing circuit may select one or more of the amplifiers of the VGA to provide the output signal with a selected gain. However,...