ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,470,181, issued on Nov. 11, was assigned to MURATA MANUFACTURING Co. LTD. (Kyoto, Japan).
"Power amplifier circuit" was invented by Naofumi Takezono (Kyoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power amplifier circuit includes: an amplifier that amplifies an input signal; and a resonant circuit that is connected to an output terminal of the amplifier and that attenuates a harmonic wave of an amplified signal obtained by amplifying the input signal. The resonant circuit includes an inductor disposed between the amplifier and a ground, a capacitive element disposed between the amplifier and the ground and connected in series to the induc...