| 摘要 |
PROBLEM TO BE SOLVED: To enable connecting an external antenna to a communication device having no external antenna terminal and supplying power source to the communication device from the outside. SOLUTION: In a mobile broadcast portable terminal 4, built-in antennas 10a, 10b are provided in its case 6, and an external power source terminal 16 is provided on the surface of the case 6. A main body 20 of an external antenna extending device 2 is attachably/detachably formed on the case 6. One part of the main body 20 contacts the external power source terminal 16 in a mounting state. Coupling antennas 22a, 22b which are coupled in high-frequency with the antennas 10a, 10b in a non-contact state are provided on positions opposing the built-in antennas 10a, 10b in the case 6, and the antennas 22a, 22b are connected to external antennas 26a, 26b provided outside the main body 20. In a mounted state, a relay power source terminal 40 is provided connectably with the terminal 16 on the position of the main body 20 contacting the terminal 16. COPYRIGHT: (C)2006,JPO&NCIPI
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