ALEXANDRIA, Va., June 19 -- United States Patent no. 12,334,874, issued on June 17, was assigned to SUMITOMO ELECTRIC INDUSTRIES LTD. (Osaka, Japan).
"High frequency amplifier" was invented by Tatsuya Hashinaga (Osaka, Japan) and Yutaka Moriyama (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A high frequency amplifier includes an asymmetric Doherty amplifier configured to amplify a high frequency signal having a wavelength Lambda, the high frequency signal being input, and the asymmetric Doherty amplifier including a carrier amplifier and a peak amplifier, the peak amplifier being configured to start an amplifying operation when an output of the carrier amplifier reaches a saturation region and...