ALEXANDRIA, Va., April 21 -- United States Patent no. 12,609,655, issued on April 21, was assigned to MURATA MANUFACTURING Co. LTD. (Nagaokakyo, Japan).
"Radio-frequency circuit" was invented by Yuki Ohmae (Nagaokakyo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power amplifier circuit and an LC circuit are included. The power amplifier circuit amplifies a radio frequency signal by switching between the first mode, in which power is amplified by using the envelope tracking system, and the second mode, in which power is amplified by using the average power tracking system. The LC circuit is connected, at its first end, to the power supply path of the power amplifier circuit and that is grounded, at...