公开(公告)号：US11545944B2

公开(公告)日：2023-01-03

申请号：US17151922

申请日：2021-01-19

Applicant: Murata Manufacturing Co., Ltd.

Inventor： Jun Enomoto ,  Kazuo Watanabe ,  Satoshi Tanaka ,  Yusuke Tanaka ,  Makoto Ito

IPC: H03F1/22 ,  H03F3/24 ,  H03F3/195 ,  H03F1/56

Abstract: A power amplifier circuit includes a power amplifier including a first transistor having a first terminal connected to a reference potential, a second terminal to which a first current and a radio-frequency signal are input, and a third terminal connected to a first power supply potential via a first inductor; a capacitor connected to the third terminal of the first transistor; a second transistor including a first terminal connected to the capacitor and the reference potential via a second inductor, a second terminal to which a second current is input and is connected to the reference potential, and a third terminal connected to the first power supply potential via a third inductor and outputs signal; and an adjustment circuit that outputs a third current corresponding to the first power supply potential or a second power supply potential to the second terminal of the second transistor.