Glass antenna for automobiles

Details Glass antenna for automobiles Glass antenna for automobiles

1993-11-29

1996-08-20

Wimer, Michael C.

Communications: radio wave antennas

Antennas

With ice clearer or preventer

343713, H01Q 132, H01Q 102

Patent

active

055482988

ABSTRACT:
An automobile antenna including a defogging heater wire and a conductor combined into a simple structure to accomplish a good FM reception. An FM choke coil which insulates in view of high-frequency the heater wire from the power supply circuit is installed between the heater wire terminal and the power supply circuit for the heater wire, and the heater wire which resonates in FM frequency band but not in AM frequency band is capacitively coupled to a conductor which is installed on the surface of the window glass and resonates in the FM frequency band but not in the AM frequency band. The heater wire and conductor are installed in such a positional relationship that a double resonance is created.

REFERENCES:
patent: 4439771 (1984-03-01), Kume et al.
patent: 4736206 (1988-04-01), Sakural et al.
patent: 5083134 (1992-01-01), Saitou et al.
patent: 5285048 (1994-02-01), Nakase

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