| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce the weight of a device and the number of its parts by using a monopole antenna element, which does not use metallic parts but has a plated structure on the inner wall face of an antenna cover. SOLUTION: A monopole antenna MA is a metal-plated cylinder formed in the inner wall of a hollow and nonconductive monopole antenna cover MC made of synthetic resin. A helical antenna HA is formed of linear metal and is coated with a nonconductive helical antenna cover HC. An antenna pull-out knob TA and a storage-use stopper IS are integrally formed by non-conductive materials. The antenna pull-out knob TA is used as the knob at the time of pulling out the monopole antenna MA. The storage-use stopper IS is used for fixing the antenna MA to an antenna fitting metal MA at storing of the monopole antenna MA.</p> |
