US 12,463,603 B2
Radio frequency circuit and communication apparatus
Yusuke Kishi, Kyoto (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed on Jun. 1, 2023, as Appl. No. 18/327,293.
Claims priority of application No. 2022-131250 (JP), filed on Aug. 19, 2022.
Prior Publication US 2024/0063763 A1, Feb. 22, 2024
Int. Cl. H03F 3/00 (2006.01); H03F 3/195 (2006.01)
CPC H03F 3/195 (2013.01) [H03F 2200/294 (2013.01); H03F 2200/451 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A radio frequency circuit comprising:
an antenna terminal;
a first switch comprising a common terminal connected to the antenna terminal, a first selection terminal configured to connect to the common terminal, and a second selection terminal configured to connect to the common terminal;
a power amplifier connected to the first selection terminal;
a low noise amplifier connected to the second selection terminal;
a regulator circuit connected to a first signal path between the antenna terminal and the common terminal, and to a second signal path between the power amplifier and the first selection terminal; and
a second switch connected between the second signal path and ground,
wherein the regulator circuit comprises at least a capacitor or an inductor.