| 摘要 |
PROBLEM TO BE SOLVED: To improve the performance of a portable telephone set and to miniaturize the portable telephone set by constituting an element in prescribed length by spirally winding fine copper wires, coating the peripheral face of this element with coating a member made of synthetic resin, and constituting a substantially long antenna line. SOLUTION: An element 1 is constituted by spirally winding fine metallic wires made of copper or the like, and an antenna wire 2 is constituted by coating the peripheral face of the element 1 with coating members 2a made of synthetic resin. Then, a connector 3 is mounted on the lower edge part of the antenna wire 2, and a holder 6 for mounting the antenna wire 2 on a portable telephone set A is mounted at the upper part of the connector 3 so as to be freely attachable and detachable. An antenna head part 4 constituted by spirally winding the metallic wires made of copper or the like with a larger diameter than that of the element is successively formed at the upper part of the holder 6 without coming in contact with the antenna wire 2, and the antenna head part 4 is covered with a cap 5 constituted of non-conductive materials such as synthetic resin or the like.
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