Radio-frequency circuit and communication device

A radio-frequency circuit configured to simultaneously transfer a radio-frequency signal of a fourth generation communication system (4G) and a radio-frequency signal of a fifth generation communication system (5G), the radio-frequency circuit comprising:

• a first transfer circuit configured to selectively receive the 4G radio-frequency signal or the 5G radio-frequency signal, and to transfer a radio-frequency signal of a first communication band of the 4G or 5G communication system, and a radio-frequency signal of a second communication band of the 4G or 5G communication system,
• wherein the first communication band includes a first transmission band and a first reception band, and the second communication band includes a second transmission band and a second reception band,
• wherein the first communication band and the second communication band are of the same communication system,
• wherein the first transmission band and the second transmission band at least partially overlap, and
• wherein the first transfer circuit comprises:
• a first power amplifier configured to amplify a transmission signal of the first transmission band and a transmission signal of the second transmission band;
• and
• a first transmission filter having a passband that includes the first transmission band and the second transmission band, the first transmission filter being configured to pass the transmission signal of the first transmission band and the transmission signal of the second transmission band, the transmission signals of the first and second transmission bands being output from the first power amplifier.