ALEXANDRIA, Va., June 25 -- United States Patent no. 12,341,476, issued on June 24, was assigned to Murata Manufacturing Co. Ltd. (Kyoto-fu, Japan).
"Power amplifier circuit" was invented by Masao Kondo (Nagaokakyo, Japan), Yasunari Umemoto (Nagaokakyo, Japan), Shaojun Ma (Nagaokakyo, Japan) and Shinnosuke Takahashi (Nagaokakyo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power amplifier circuit includes an amplification unit, a heating unit, and a control circuit. The amplification unit is configured to amplify a radio-frequency signal. The heating unit is provided adjacent to the amplification unit. The heating unit includes one or more transistors configured to generate heat that increases as t...