High-frequency circuit, front end module, and communication apparatus

A high-frequency circuit comprising:

• a first signal path on which a high-frequency signal in a first frequency band group is transmitted;
• a second signal path on which a high-frequency signal in a second frequency band group is transmitted;
• a first switch that includes a common terminal and a plurality of selection terminals;
• a first amplifier that includes a first input terminal and a first output terminal, the first input terminal being connected to the first signal path, and the first output terminal being connected to a first selection terminal, among the plurality of selection terminals;
• a second amplifier that includes a second input terminal and a second output terminal, the second input terminal being connected to the second signal path, and the second output terminal being connected to a second selection terminal, among the plurality of selection terminals;
• and
• an output-side impedance matching circuit that is connected to at least one selection terminal, which is different from the first selection terminal and the second selection terminal, among the plurality of selection terminals, and that matches impedance of the first amplifier at the first output terminal side or impedance of the second amplifier at the second output terminal side with a predetermined impedance with a conductive state between the at least one selection terminal and the common terminal;
• wherein
• a conductive state between the first selection terminal and the common terminal and a conductive state between the second selection terminal and the common terminal are exclusively switched with the first switch.