| 摘要 |
OBJECT To provide an antenna device which can reduce mutual interference in a case in which two antenna elements are arranged adjacent to the same conductor, such as the roof or the like. MEANS OF SOLUTION An antenna device includes a first antenna conductor having a first feeding point provided on windshield glass, a second antenna conductor having a second feeding point, a passive conductor, and an auxiliary conductor, wherein the first antenna conductor and the second antenna conductor are arranged in a vicinity of the auxiliary conductor with a predetermined gap therebetween, the passive conductor includes a first passive element extending in a direction away from the auxiliary conductor, and a second passive element connected to one end of the first passive element on a side of the auxiliary conductor and extending along the auxiliary conductor, and an open end of the second passive element is arranged at a position on a side of the first antenna conductor, and adjacent to the auxiliary conductor between the first antenna conductor and the second antenna conductor. |
