ALEXANDRIA, Va., June 16 -- United States Patent no. 12,308,809, issued on May 20, was assigned to MURATA MANUFACTURING Co. LTD. (Kyoto, Japan).
"Power amplification circuit" was invented by Shigeki Koya (Kyoto, Japan) and Takayuki Tsutsui (Kyoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power amplification circuit includes first wiring supplied with a first signal having a first frequency, second wiring supplied with a second signal having a second frequency that differs from the first frequency, a first amplification circuit that amplifies the first signal supplied through the first wiring and supplies a first amplified signal to the second wiring, and a second amplification circuit that ampl...