ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,556,140, issued on Feb. 17, was assigned to Ohio State Innovation Foundation (Columbus, Ohio).
"Broadband sliding-mode outphasing power amplifier with high efficiency" was invented by Patrick Roblin (Columbus, Ohio) and Dominic Mikrut (Columbus, Ohio).
According to the abstract* released by the U.S. Patent & Trademark Office: "A dual-input microwave power amplifier (PA) with high-efficiency. The PA exploits the continuum of modes between the Doherty and Chireix PA mode of operation to achieve 40% fractional bandwidth while relying on the physical linear dispersion of the transmission lines of the lossless output combiner. A constant output is achieved at peak power over the entire ba...