| 摘要 |
A highly sensitive antenna coil is provided by increasing the length of a core or increasing the winding number of a coil or increasing the length of the coil, without increasing the sizes of the antenna coil. An antenna coil (10) is provided with a first coil section (211) whereupon a coil wire (21A) is wound, a second coil section (212), which has the coil wire (21A) wound thereon and intersects with the first coil section (211); and a case body (30) having a coil storing section (34) for storing the first coil section (211) and the second coil section (212). The first coil section (211) and the second coil section (212) are arranged by permitting the extending direction of coil sections (211, 212) to be in the diagonal direction of the coil storing section (34).
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