US 12,218,633 B2
Power amplifier circuit
Satoshi Goto, Kyoto (JP); Yoshiki Kogushi, Kyoto (JP); Yuri Honda, Kyoto (JP); and Kenichi Shimamoto, Kyoto (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed on Jul. 15, 2021, as Appl. No. 17/376,878.
Claims priority of application No. 2020-121804 (JP), filed on Jul. 16, 2020; and application No. 2020-219345 (JP), filed on Dec. 28, 2020.
Prior Publication US 2022/0021341 A1, Jan. 20, 2022
Int. Cl. H03F 1/02 (2006.01); H03F 3/45 (2006.01)
CPC H03F 1/0216 (2013.01) [H03F 3/45475 (2013.01); H03F 2200/102 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A power amplifier circuit comprising:
a differential amplifier circuit configured to be activated by a supply voltage, the supply voltage varying in accordance with a varying amplitude of a signal;
a bias circuit configured to output a bias to the differential amplifier circuit; and
first and second dispersion circuits configured to control a dependency of a gain of the differential amplifier circuit on the supply voltage, the first and second dispersion circuits being respectively provided for a pair of differential signals outputted from the differential amplifier circuit.