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EP0065263A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Glass antenna system for an automobile

Assignee: Denso Ten Ltd
•
Filing: 1982-05-11
•
Granted: —
•
Expires: 2002-05-11
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Abstract

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.

Inventors

  • 👤 Masaharu Kume
  • 👤 Kenichi Ishii
  • 👤 Takayasu Hokusho

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-27 16:29
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/1271; H01Q1/1278

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 122 words
A glass antenna system for an automobile which 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, 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.
Claim 2
Dependent Claim 122 words
A glass antenna system for an automobile which 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, 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.
Claim 3
Dependent Claim 28 words
The glass antenna system for an automobile according to claim 1 wherein the main antenna has a pattern asymmetric to the vertical center line of the glass plate.
Claim 4
Dependent Claim 56 words
The glass antenna system for an automobile according to claim 1 wherein the main antenna has a pattern asymmetric to the vertical center line of the glass plate and the feeding point of the main antenna for connection to an antenna feeder line is disposed at either one of the side parts of the glass plate.
Claim 5
Dependent Claim 48 words
The glass antenna system for an automobile according to claim 1 wherein one of the pair of bus bars is divided into an upper bus bar and a lower bus bar, and a power source lead wire is connectable to each of the upper and lower bus bars.

References Cited (Backward Citations)

GB1445532A Cited
US4063247A Cited
DE2746419A1 Cited
GB2019100A Cited

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