Abstract: An antenna device for a television receiver mounted on an automobile comprises a front glass antenna including at least two antenna conductors which are separately provided in a windshield glass of the automobile; at least one second antenna provided on the automobile at a position spaced from the front glass antenna, and a switching circuit which is connected to the at least two antenna conductors of the front glass antenna and the at least one second antenna so as to selectively use signals received by the antenna.

Abstract: A glass antenna system for an automobile comprises a main antenna disposed at an upper part of a glass plate for a rear window of the automobile and a defogging electric heating element disposed below and separate from the main antenna and comprising a plurality of heating strips and a pair of bus bars for supplying electricity to the heating strips. The glass antenna system is characterized in that a lead wire is connected to a predetermined portion of the lower most heating strip among said heating strips and a feeding point for connection to an antenna feeder line is provided on the lead wire, whereby the defogging electric heating element constitutes a subsidiary antenna having a directivity different from the directivity of the main antenna.

Abstract: An antenna system for a rear window glass of an automobile comprises a defogging electric heating element and patterned conductive strips for antenna wherein the configuration of the antenna and the configuration of the bus bars for the electric heating element are modified to improve non-directivity for FM radio broadcast wave for a radio receiver in the automobile.