| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a radio terminal device capable of suppressing the degradation of antenna characteristics due to opening/closing of a terminal. <P>SOLUTION: A mobile phone includes a connection part for connecting end parts of a receiver enclosure and a transmitter enclosure to each other so that they can be opened and closed, an incorporated antenna 105 which is disposed in the transmitter enclosure and in an end part on a side opposite to the connection part, and a signal line for electrically connecting a ground pattern layer of a circuit board in the receiver enclosure and a ground pattern layer of a circuit board 31 in the transmitter enclosure. A conductive layer connected to the ground pattern layer of the circuit board is provided on an inside surface in the end part on the connection part side of the receiver enclosure, and a speaker sheet metal 73 connected to the ground pattern layer of the circuit board 31 is provided in the end part on the connection part side of the transmitter enclosure, and the conductive layer and the speaker sheet metal 73 are disposed in opposition to each other in a closed state. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
