| 摘要 |
PURPOSE: An antenna of a portable wireless device is provided to minimize the size of the antenna by using a teflon bobbin in the inner side of a spring which is mounted to the interior of a helical antenna. CONSTITUTION: A hole(2) is formed at the central portion of a teflon bobbin(4). A rod antenna(10) is inserted into the hole(2) which is formed in the teflon bobbin(4). A C-ring(11) which has a plurality of resilient pieces is fixed to the inner sider of the hole(2). A spring(6) is wound on the periphery of the teflon bobbin. A chip coil is fixed between the lower end of the spring(6) and a pattern(7) by soldering.
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