ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,500,557, issued on Dec. 16, was assigned to Skyworks Solutions Inc. (Irvine, Calif.).

"Gain boosting in envelope tracking power amplifiers using RF-coupled feedback" was invented by Kunal Datta (Sunnyvale, Calif.) and Khaled A. Fayed (Marion, Iowa).

According to the abstract* released by the U.S. Patent & Trademark Office: "An envelope tracking system has an envelope tracker that is configured to generate a power amplifier supply voltage that changes is relation to an envelope of a radio frequency signal, and a power amplifier comprises at least a first amplification stage having an input terminal receiving a radio frequency (RF) signal to be amplified. The power amplifier has a firs...