Patent ID: 7904031

Claim:
A high-frequency module for transmitting and receiving transmission-reception signals of communication systems of at least three kinds from an antenna, the signals to be inputted and outputted from particular input-output portions, respectively, the high-frequency module comprising: an FET switch including an antenna input-output portion to be connected to the antenna and at least three signal input-output portions whose connection to the antenna input-output portion is switched in accordance with control signals to be inputted, the FET being constituted such that the transmission signals of communication systems of three kinds are inputted from different signal input-output portions and such that reception signals of at least two communication systems are outputted from the same signal input-output portion; and a diplexer connected to the signal input-output portion of the FET switch, from which reception signals of at least two communication systems are outputted, the diplexer being arranged to separate the reception signals of the at least two communication systems; wherein the high-frequency module is a high-frequency module arranged to transmit and receive transmission-reception signals of first, second, third, and fourth communication systems from the antenna, and the FET switch includes first, second, third, and fourth signal input-output potions and is constituted such that transmission signals of the first communication system and the second communication system are inputted to the first signal input-output portion, such that transmission signals of the third communication system and the fourth communication system are inputted to the second signal input-output portion, such that reception signals of the first communication system and the fourth communication system are outputted from the third signal input-output portion, and such that reception signals of the second communication system and the third communication system are outputted from the fourth signal input-output portion; and a first diplexer connected to the third signal input-output portion and arranged to separate a reception signal of the first communication system and a reception signal of the fourth communication system and a second diplexer connected to the fourth signal input-output portion and arranged to separate a reception signal of the second communication system and a reception signal of the third communication system are provided.