| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an antenna device which is easily manufactured, can cope with two frequencies and broadbanding, can be made compact, and has a stable characteristic. <P>SOLUTION: In the antenna device comprising two-frequency compatible folded dipole antennas, a first element in which an arrangement shape to the flat surface of a flat element is made almost rectangular, a second element which is provided in parallel with the first element, and in which an arrangement shape to the flat surface of the flat element is made almost rectangular, and a pair of rising conductive wires for conducting the first element and the second element are provided in a single body. In the first element, a pair of feeding points are formed with an interval opened at an almost central part of one longer side of an almost rectangle, a pair of rising conductive wires are formed with an interval opened on a longer side facing the pair of feeding points, and each of the pair of rising conductive wires is conducted to the almost central part of one longer side of the second element in parallel with the facing longer side of the first element with an interval opened. <P>COPYRIGHT: (C)2008,JPO&INPIT |
