ALEXANDRIA, Va., June 18 -- United States Patent no. 12,328,100, issued on June 10, was assigned to MITSUBISHI ELECTRIC Corp. (Tokyo).
"Doherty amplifier and communication device" was invented by Shuichi Sakata (Tokyo), Yuji Komatsuzaki (Tokyo) and Shintaro Shinjo (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A Doherty amplifier is configured in such a manner that: the ratio Z3/Z2 of a characteristic impedance Z3 of a second transmission line to a characteristic impedance Z2 of a first transmission line is a power division ratio P2/P3 of a signal to be amplified between a carrier amplifier and a peak amplifier when both of the carrier amplifier and the peak amplifier are saturated; and a resistance v...