Radio-frequency module

A radio-frequency module comprising:

• a module substrate;
• a semiconductor device mounted on or in the module substrate, the semiconductor device including a radio-frequency amplifier circuit and a band selection switch;
• and
• an output matching circuit disposed on or in the module substrate, the output matching circuit being coupled between the radio-frequency amplifier circuit and the band selection switch, wherein
• the band selection switch is configured to output an inputted radio-frequency signal from a contact selected from a plurality of contacts,
• the semiconductor device includes
• a first member including the band selection switch including a semiconductor element made of an elemental semiconductor,
• a second member joined to the first member in surface contact with the first member, the second member including the radio-frequency amplifier circuit including a semiconductor element made of a compound semiconductor, and
• a plurality of conductive protrusions arranged at positions included in the first member or the second member in plan view,
• the semiconductor device is mounted on or in the module substrate with the plurality of conductive protrusions interposed between the semiconductor device and the module substrate such that the second member faces the module substrate, and
• the semiconductor device is disposed in a proximity to the output matching circuit in plan view, or the semiconductor device overlaps at least one passive element constituting the output matching circuit in plan view.