| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an antenna device including an antenna which eliminates the need for a bottom board, makes an annular radiation element into a meander form, and narrows a region required for the installation.SOLUTION: An antenna device 1 includes: an antenna 2 formed by an annular radiation element 21; and a coaxial cable 3 where an inner conductor 31 is connected with the annular radiation element 21. The annular radiation element 21 of the antenna 2 is capacitively coupled to an outer conductor 32 of the coaxial cable 3.</p> |
