Patent ID: 8976707
Filing Date: 2015-03-10
Classification: H04B,H04L

Abstract:
1. A radio-frequency front-end module that transmits and receives a first communication signal and a second communication signal, the first communication signal including a first transmission signal and a first reception signal, and the second communication signal including a second transmission signal and a second reception signal, the radio-frequency front-end module comprising: a first transmission signal input terminal to which the first transmission signal is input; a first common terminal that outputs the first transmission signal and inputs the first reception signal; a second transmission signal input terminal to which the second transmission signal is input; a second common terminal that outputs the second transmission signal and inputs the second reception signal; a reception signal output terminal that outputs the first reception signal and the second reception signal; a first transmission-side filter connected between the first transmission signal input terminal and the first common terminal, the first transmission-side filter having a pass band that is a frequency band of the first transmission signal and an attenuation band including a frequency band of the first reception signal; a second transmission-side filter connected between the second transmission signal input terminal and the second common terminal, the second transmission-side filter having a pass band that is a frequency band of the second transmission signal and an attenuation band including a frequency band of the second reception signal; a switch element including a plurality of individual ports to which the first common terminal and the second common terminal are respectively directly connected, and a common port to which the plurality of individual ports are individually switched and connected; and a reception-side filter connected between the common port and the reception signal output terminal, the reception-side filter having a pass band including the frequency bands of the first reception signal and the second reception signal.