公开(公告)号：US20240223133A1

公开(公告)日：2024-07-04

申请号：US18202963

申请日：2023-05-29

Applicant: RichWave Technology Corp.

Inventor： Chang-Heng Chen ,  Tien-Yun Peng ,  Chih-Sheng Chen

IPC: H03F1/30 ,  H03F3/24

CPC classification number: H03F1/30 ,  H03F3/245 ,  H03F2200/451

Abstract: A radio-frequency circuit can include a power amplifier, a first bias circuit and a second bias circuit. The power amplifier can include an input terminal used to receive a radio-frequency signal, and an output terminal used to output an amplified radio-frequency signal. The first bias circuit can include a first output terminal coupled to the input terminal of the power amplifier through a common node. The second bias circuit can include a second output terminal and a current adjustment circuit, where the second output terminal can be coupled to the common node, and the current adjustment circuit can include a transistor. The transistor can include a first terminal coupled to the second output terminal, a second terminal used to receive a reference voltage, and a control terminal.