| 摘要 |
PROBLEM TO BE SOLVED: To provide a two-stage antenna for a mobile telephone which allows the reduction in component cost, efficient assembling work, reduction in defective rate and adjustment rate, and allows a selection of material for a first-stage antenna shaft (antenna top side) and can be reduced in weight by allowing the reduction in thickness of a hollow material (pipe). SOLUTION: The hollow material (pipe) is used for the first-stage antenna (antenna top side) 3. A thin material is used for the second-stage antenna shaft (main body mobile telephone side) for the second-stage antenna shaft to be inserted into the first-stage antenna shaft (antenna top side).
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