| 摘要 |
An antenna for portable radiotelephones including an antenna element and antenna holder. The antenna element is covered by a non-conductive cover except for the tip and base ends which respectively have a cap and a sleeve, both made of conductive materials thereon. The antenna holder is made of conductive materials, fixed in a case of the telephone and is connected to a matching device. The antenna holder includes a fastening section and an engaging section and holds therein the antenna element so the antenna element can be pulled outside of and pushed back into the case. The fastening section engages with the cap of the antenna element when the antenna element is pulled outside of the case. Thus, the antenna element can be kept in a state of electrical continuity with the antenna holder, which is electrically connected to the matching device, at all times. That is, the antenna element of the present invention is responsive to call signals not only when the antenna element is pulled outside of the case, but also when it is pushed back into the case.
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