US 11,736,077 B2
Radio-frequency module and communication device
Morio Takeuchi, Nagaokakyo (JP); Shigeru Tsuchida, Nagaokakyo (JP); and Yukiya Yamaguchi, Nagaokakyo (JP)
Assigned to MURATA MANUFACTURING CO., LTD., Nagaokakyo (JP)
Filed by Murata Manufacturing Co., Ltd., Nagaokakyo (JP)
Filed on Jun. 4, 2021, as Appl. No. 17/338,697.
Claims priority of application No. 2020-122417 (JP), filed on Jul. 16, 2020.
Prior Publication US 2022/0021357 A1, Jan. 20, 2022
Int. Cl. H04W 88/02 (2009.01); H03F 3/24 (2006.01); H03F 1/56 (2006.01); H04L 5/14 (2006.01); H04B 1/40 (2015.01)
CPC H03F 3/245 (2013.01) [H03F 1/56 (2013.01); H04B 1/40 (2013.01); H04L 5/14 (2013.01); H03F 2200/222 (2013.01); H03F 2200/387 (2013.01); H03F 2200/451 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A radio-frequency module comprising:
a mounting substrate having a first main surface and a second main surface on opposite sides of the mounting surface;
a first power amplifier that includes a first input terminal and a first output terminal, and is mounted on the mounting substrate, the first power amplifier is configured to amplify a transmission signal of a first frequency band and output the amplified transmission signal of the first frequency band;
a second power amplifier that includes a second input terminal and a second output terminal, and is mounted on the mounting substrate, the second power amplifier is configured to amplify a transmission signal of a second frequency band, which is different from the first frequency band, and output the amplified transmission signal of the second transmission band;
a switch that has a common terminal and a plurality of selection terminals connectable to the common terminal, and that is mounted on the mounting substrate;
a plurality of first filters that are mounted on the mounting substrate; and
a second filter that is mounted on the mounting substrate,
wherein respective pass bands of the plurality of first filters are contained within the first frequency band,
a pass band of the second filter is contained within the second frequency band,
an output power level of the second power amplifier is greater than an output power level of the first power amplifier,
the first output terminal of the first power amplifier is switchably connectable to the plurality of first filters via the switch, and
the second output terminal of the second power amplifier is connected to the second filter without the switch interposed therebetween.