公开(公告)号：EP3910792A1

公开(公告)日：2021-11-17

申请号：EP21170616.3

申请日：2021-04-27

申请人： RichWave Technology Corp.

发明人： Huang, Pin-Yi ,  Chen, Chih-Sheng ,  Hsu, Ching-Wen

IPC分类号： H03F3/193 ,  H03F1/56 ,  H03F1/32 ,  H03F3/21 ,  H03F1/22 ,  H03G3/00 ,  H03G1/00 ,  H03F3/72

摘要： An amplifier circuit (1) includes an input terminal (10) to receive an input signal (RFin), an output terminal (12) to output an output signal (RFout), an amplification unit (14), and a phase adjustment unit (161 to 167). The amplification unit (14) includes an input terminal (IN) coupled to the input terminal (10) of the amplifier circuit (1), an output terminal (OUT) coupled to the output terminal (12) of the amplifier circuit (1), a first terminal (T1) coupled to a first voltage terminal (VDD), and a second terminal (T2) coupled to a second voltage terminal (GND). The phase adjustment unit (161 to 167) is coupled to the amplification unit (14). The amplifier circuit (1) can be operated in a plurality of modes to provide respective gains. The phase of the output signal (RFout) is maintained within a predetermined range regardless of the mode the amplifier circuit (1) is operated in.