Glass antenna device for an automobile

摘要

A glass antenna device for an automobile in which a defogger 4 is connected to the automobile body as the earth; antenna conductors are provided in a region in a rear window glass sheet 1 other than the region where the defogger 4 is provided; an antenna conductor element 13 which is arranged in substantially parallel to heater strips 2 in the defogger 4 and which is more than half in length of the width of the rear window glass sheet 1 is located of 15 mm - 50 mm apart from an end portion of the antenna conductors 5 in the defogger 4; and the inductance valve of a coil 8 in a noise filter 10 connected to the defogger 4 is determined to be 0.5 - 10 mu H. <IMAGE>