Electrical signal separating device for window antenna having is

Details Electrical signal separating device for window antenna having is Electrical signal separating device for window antenna having is

1983-12-20

1987-03-31

Lieberman, E.

Communications: radio wave antennas

Antennas

With ice clearer or preventer

343861, 343713, 455291, H01Q 102, H01Q 132

Patent

active

046546693

ABSTRACT:
The present invention provides within three particular aspects thereof an isolating and matching device operable to enable an electrically heatable window of a motor vehicle to be used as an efficient VHF communications aerial or antenna; wherein isolating and matching circuitry is provided for Series VHF Matching, Shunt VHF Matching and Split Passband Matching of an electrically heatable window heating element to an aerial input impedance of an aerial feeder circuit of a radio frequency receiver or transmit/receiver device.

REFERENCES:
patent: 2042319 (1936-05-01), Lindenblad
patent: 3484584 (1969-12-01), Shaw
patent: 3725942 (1973-04-01), Ukmar
patent: 4086594 (1978-04-01), Kropielnicki et al.
patent: 4439771 (1984-03-01), Kume et al.
"Amplified Car Radio Antennas" by Gary K. Johnson, Radio-Electronics, May 1972, pp. 37-39, 78-79, 88-89, and 91.

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