ALEXANDRIA, Va., June 10 -- United States Patent no. 12,294,339, issued on May 6, was assigned to MURATA MANUFACTURING Co. LTD. (Kyoto, Japan).
"Power amplifier circuit" was invented by Kenichi Shimamoto (Kyoto, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A power amplifier circuit 10 includes amplifiers 102 and 103, bias circuits 1023 and 1033, and a control circuit 106 that controls the bias circuits 1023 and 1033. When the power amplifier circuit 10 operates in a low power mode, the control circuit 106 controls the bias circuit 1023 and the bias circuit 1033 such that a bias current or voltage is supplied to the amplifier 102 and a bias current or voltage is not supplied to the amplifier 103. When...