| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a portable telephone that does not exceed the upper limit value of electric field strength stipulated in a law by a nation even though deformed and even though an external device is attached/detached in a portable telephone deformable among a plurality of forms and a portable telephone to/from which an external device can be attached or detached. <P>SOLUTION: The portable telephone 100 deformable among a plurality of forms is provided with a built-in antenna 109 for radio transmission, an attenuation circuit 117 for attenuating a transmission output of the built-in antenna only by a prescribed amount, and a switching part 119a for switching the connection/disconnection between the built-in antenna and the attenuation circuit in accordance with deformation of the portable telephone. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
