ALEXANDRIA, Va., Aug. 5 -- United States Patent no. 12,700,833, issued on Aug. 4, was assigned to Murata Manufacturing Co. Ltd. (Kyoto, Japan).
"Power amplifier" was invented by Jun Enomoto (Kyoto, Japan) and Shohei Imai (Kyoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power amplifier includes a first amplifier configured to amplify a first high-frequency signal, a second amplifier configured to amplify a second high-frequency signal delayed with respect to the first high-frequency signal by at least 90 degrees, a hybrid coupler including a first transmission line and a second transmission line, a first power-supply circuit for the first amplifier, a second power-supply circuit for the second a...