US 12,273,080 B2
Radio-frequency circuit and communication device
Kenji Tahara, Kyoto (JP); Syunji Yoshimi, Kyoto (JP); Kazuhiro Ikarashi, Kyoto (JP); Yusuke Tanaka, Kyoto (JP); Kenichi Shimamoto, Kyoto (JP); and Masatoshi Hase, Kyoto (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Kyoto (JP)
Filed by Murata Manufacturing Co., Ltd., Kyoto (JP)
Filed on Aug. 3, 2022, as Appl. No. 17/817,018.
Application 17/817,018 is a continuation of application No. PCT/JP2020/042649, filed on Nov. 16, 2020.
Prior Publication US 2022/0376665 A1, Nov. 24, 2022
Int. Cl. H03F 3/24 (2006.01); H03F 1/56 (2006.01); H04B 1/04 (2006.01)
CPC H03F 3/245 (2013.01) [H03F 1/56 (2013.01); H04B 1/04 (2013.01); H03F 2200/171 (2013.01); H03F 2200/387 (2013.01); H03F 2200/451 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radio-frequency circuit comprising:
a power amplifier;
a plurality of transmit filters;
a switch configured to selectively couple the plurality of transmit filters to the power amplifier;
a plurality of first matching networks coupled between the plurality of transmit filters and the switch; and
a second matching network coupled between the power amplifier and the switch, the second matching network comprising a transmission line transformer.