110 and the antenna switching circuit 103 thus the connection between the pdc built in antenna 101 the pdc phs common filter 104 and the external terminals 106 and 109 and each transmitting and receiving sections is controlled by the antenna switching circuit 103 based on control signals from the control section 111 the antenna switching circuit 103 is provided with switches sw 1 to sw 8 the switch sw 1 is provided between the node 121 and a node 126 and the switch sw 2 is provided between the external terminal 106 and the node 123 the switch sw 3 is provided between the node 126 and the node 123 and the switch sw 4 is provided between the node 126 and the node 122 the switch sw 5 is provided between the node 123 and the external terminal 109 and the switch sw 6 is provided between the node 122 and the node 125 the switch sw 7 is provided between the node 125 and the external terminal 109 and the switch sw 8 is provided between the node 122 and the node 124 thus the switches sw 1 and sw 3 connect the built in antenna 101 and the pdc receiving section 107 the switches sw 3 and sw 4 connect the pdc phs common antenna 102 and the pdc receiving section 107 the switch sw 6 connects the pdc phs common antenna 102 and the pdc transmitting section 108 the switch sw 8 connects the pdc phs common antenna 102 and the matching circuit 105 the switches sw 5 and sw 7 connect the external terminal.