Window glass antenna apparatus for vehicles

摘要

A window glass antenna apparatus for vehicles includes a defogger for defogging a window glass of a vehicle, which has bus bars at both ends and which is constituted of a thin, narrow strip conductor formed on the window glass such that the bus bars are opposed to a window metal frame of the vehicle with a predetermined gap therebetween, a driven antenna having a height and arranged close and opposite to the defogger with a predetermined clearance such that one side of the driven antenna is mutually coupled to that of the defogger, and a short circuit for causing a short circuit between each of the upper right and left ends of the bus bars and the window metal frame at a high frequency.