Patent ID: 7511676

Claim:
A high frequency wave glass antenna for an automobile, comprising a plurality of heating wires and a plurality of bus bars for feeding the heating wires, disposed in or on an automobile rear window glass sheet, the heating wires and the bus bars forming a defogger, the heating wires extending in a horizontal direction, a substantially horizontal direction, a direction along an upper edge of the rear window glass sheet or a direction along a lower edge of the rear window glass sheet; and an antenna conductor disposed in an upper blank region of the rear window glass sheet except for a defogger region; wherein it is assumed that there is a line, which passes through the center of the antenna conductor or the center of gravity thereof, and which extends parallel to the heating wire at the highest position, is called an imaginary parallel line; and an island-like conductor containing a linear conductor is disposed at one or more locations in a region of the rear window glass sheet between the imaginary parallel line and the heating wire at the highest position as viewed three-dimensionally.