ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,744,554, issued on Sept. 22, was assigned to MURATA MANUFACTURING Co. LTD. (Nagaokakyo, Japan).
"Radio frequency module" was invented by Tetsurou Ashida (Nagaokakyo, Japan), Kouhei Jitousho (Nagaokakyo, Japan), Tomoya Oda (Nagaokakyo, Japan) and Shohei Imai (Nagaokakyo, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A radio frequency module includes a carrier amplifier and a peak amplifier. A 90deg hybrid circuit is connected to an input end of the carrier amplifier and an input end of the peak amplifier. A coupler is connected to an output end of the carrier amplifier and an output end of the peak amplifier. A control circuit varies a threshold ...