Glass antenna device for an automobile

Details Glass antenna device for an automobile Glass antenna device for an automobile

1996-02-28

1997-08-05

Hajec, Donald T.

Communications: radio wave antennas

Antennas

With vehicle

343704, 343712, H01Q 132

Patent

active

056547218

ABSTRACT:
A glass antenna device for an automobile which has an electric heating type defogger, antenna conductors disposed near the defogger in a capacitive coupling relation, which are formed on a glass sheet to be fitted to a rear window opening of an automobile, and a reactance circuit connected between bus bars for the defogger and a d.c. power source for the defogger, wherein there is an anti-resonance point caused by impedance composed mainly of capacitance which is produced in correlation among the antenna conductors, the defogger and the body of automobile and the impedance of the reactance circuit, the anti-resonance point being out a predetermined receiving frequency band region or a predetermined broadcast frequency band region, and

REFERENCES:
patent: 4439771 (1984-03-01), Kume et al.
patent: 4914446 (1990-04-01), Lindenmeier et al.
patent: 5083133 (1992-01-01), Takayama
patent: 5083134 (1992-01-01), Saitou et al.
patent: 5293173 (1994-03-01), Kropielnicki et al.
patent: 5334988 (1994-08-01), Murakami et al.
patent: 5428830 (1995-06-01), Zerod et al.

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