Window glass antenna apparatus for vehicles

摘要

A window glass antenna apparatus for vehicles includes a defogger (10) for defogging a window glass (101) of a vehicle, which has bus bars (10c, 10d) at both side 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 (30) of the vehicle with a predetermined gap there-between, a driven antenna (20) 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 (41, 42) 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.