| 摘要 |
PROBLEM TO BE SOLVED: To provide an on-board antenna with enhanced transmission reception characteristics while suppressing deterioration in vehicle mountability. SOLUTION: The on-board antenna 10 is configured by being provided with: a planar antenna 11 using a rear glass 2 for a dielectric base board and placed on the surface 2A of the rear glass 2 inside a vehicle; and a nearly box shape reflecting member 12 placed to cover the surface of the planar antenna 11. The reflection member 12 is configured to include: a reflection member main body 31 made of a nearly box shaped nonconductive member having an opening 12a; and a conductive inner face 32 made of a conductive member provided to entirely cover the inner face of the reflection member main body 31. The opening 12a of the reflecting member 12 faces the planar antenna 11. The the inner edge of the opening 12a, that is, the opening end 32a of the conductive inner face 32, is separated from the outer edges of a ground conductor 22 in the outward direction and surrounds the outer edges. COPYRIGHT: (C)2004,JPO&NCIPI
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