| 摘要 |
PROBLEM TO BE SOLVED: To satisfactorily receive a broadcast wave in a DAB band.SOLUTION: An antenna is provided in a window pane of a vehicle and includes: a core wire side power supply part, a ground side power supply part which is provided separately from the core wire side power supply part; a core wire side element including at least two first wires extending substantially horizontally from the core wire side power supply part and a second wire substantially orthogonal with each of the first wires; and a ground side element extending from the ground side power supply part in the same direction as the first wires. The second wire is substantially orthogonal with each of the first wires and extends vertically from each of the first wires. When a wavelength of a center frequency in a reception frequency band is defined as λ and a wavelength shortening rate of the window pane is defined as α, an interval A between the core wire side power supply part and the second wire ranges from 0.07 αλ to 0.1 αλ and a full length B of the second wire ranges from 0.3 αλ to 0.4 αλ.SELECTED DRAWING: Figure 4 |
