Patent ID: 7555324

Claim:
A mobile terminal comprising: a first antenna for radio communication; a second antenna for an operation different from the first antenna; a transmission-reception circuit configured to transmit and receive signals to and from a base station through the first antenna; a GPS reception circuit configured to receive signals from a GPS satellite through the first antenna or the second antenna; a diversity reception circuit for receiving the signals from the base station through the second antenna; an external terminal for connecting an external antenna thereto; a power supply control unit for turning off power supply to the diversity reception circuit; and a switch unit configured to selectively switch each of the first antenna and the second antenna, between the transmission-reception circuit, the GPS reception circuit, and the diversity reception circuit according to an operation mode of the mobile terminal including a communication mode and a GPS reception mode, wherein: the switch unit switches the transmission-reception circuit to couple to the first antenna and switches the diversity reception circuit to couple to the second antenna when the communication mode is set to communicate with the base station, the switch unit switches the GPS reception circuit to couple to the first antenna or to the second antenna when the GPS reception mode is set to receive signals from the GPS satellite, the communication mode includes a data communication mode and a voice communication mode, and the power supply control unit turns off the power supply to the diversity reception circuit when the communication mode is set to the voice communication mode; the transmission-reception circuit, the GPS reception circuit and the diversity reception circuit concurrently exist in the terminal at the same time; when the external antenna is connected to the external terminal, the switch unit switches the transmission-reception circuit to couple to the external antenna instead of the first antenna during the communication mode, and switches the GPS reception circuit to couple to the external antenna instead of the first antenna or the second antenna during the GPS reception mode; and when the external antenna is connected to the external terminal, a performance of the transmission-reception circuit is evaluated by using the signals transmitted to and received from the base station by the transmission-reception circuit, and a performance of the GPS reception circuit is evaluated by using the signals received from the GPS satellite by the GPS reception circuit.