| 摘要 |
<p>PROBLEM TO BE SOLVED: To perform speaking with satisfactory antenna sensitivity at all the time even when two hinged casings are folded and concerning a foldable telephone set. SOLUTION: An antenna feeding part 6 is fixed to a first casing 1 and power is supplied by connecting the casing with a circuit board 7. Besides, a helical coil 4 is incorporated and conducted with the feeding part. On the other hand, an element 5 is built in a second casing 2. In the folded state, the helical coil 4 built in the first casing 1 is operated as an antenna since power is supplied from the antenna feeding part 6. In the opened state, on the other hand, the element 5 built in the second easing 2 is operated as an antenna by capacitive coupling with the helical coil 4, to which power is supplied by the first casing.</p> |
