US Patent 11043983 Radio frequency module and communication device including the same

A first transmitting circuit transmits a first transmission signal of a first frequency band for 2G. A second transmitting circuit transmits a second transmission signal of a second frequency band for 2G. The second frequency band is higher than the first frequency band. A bypass terminal is connected to an output end of the second transmitting circuit. A third transmitting circuit transmits a third transmission signal of a third frequency band for 4G or 5G. A frequency of a harmonic wave of the third transmission signal overlaps the second frequency band. A substrate includes a ground layer. The ground layer is disposed between part of the second transmitting circuit and part of the third transmitting circuit.