| 摘要 |
PROBLEM TO BE SOLVED: To provide a multi-element loop antenna that is not voluminous to facilitate transportation and reduces number of components to facilitate the assembling and to avoid deviation in the center of each element. SOLUTION: In the multi-element loop antenna 1 configured by mounting at least two loop antenna elements 3, 4, 5 with different diameters to a boom 2, the boom 2 separately comprises a plurality of rod members 21, 22, 23, a through-shaft 20 is used to freely foldably handle a tail end of the preceding rod member 21 and a tip of the succeeding rod member 22 adjacent to each other, deviates a center axis of the preceding rod member 21 and a center axis of the succeeding rod member 22 adjacent to each other by a size corresponding to the thickness of each rod member so that they are formed stepwise for extension. The antenna element 3 with a smaller diameter is fitted to the preceding rod member 21 adjacent to the succeeding rod member 22 and the antenna element 4 with a larger diameter is fitted to the succeeding rod member 22.
|
