ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,424,980, issued on Sept. 23, was assigned to Mitsubishi Electric Corp. (Tokyo).
"Doherty amplifier" was invented by Yoshinobu Sasaki (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pass phase of a path including the first input phase delay circuit, the carrier amplifier and the second output phase delay circuit is the same as that of a path including the second input phase delay circuit, the peak amplifier and the second output phase delay circuit in an operating band. A parasitic capacitance on a drain side of the first transistor and the first output phase delay circuit constitute a 90-degree line viewed from the first transistor. A parasitic...