Combination antenna and windshield heater

Details Combination antenna and windshield heater Combination antenna and windshield heater

1989-03-07

1991-04-30

Hille, Rolf

Communications: radio wave antennas

Antennas

With ice clearer or preventer

343713, 343767, H01Q 102

Patent

active

050122550

ABSTRACT:
A motor vehicle windshield is formed with a transparent vapor-deposited metal coating for windshield heating and with an antenna for radio reception. Preferably, the metal coating is connected to an inner conductor of a coaxial cable leading to the radio receiver, while the outer conductor of the coaxial cable is connected to chassis or ground potential. A slot (10, 20, 30, 40, 55, 56) in the metal coating is dimensioned to have a length of some harmonic of one wavelength in the FM frequency band, a width smaller than a half wavelength, and a minimum spacing a from the supply buses on each side of the windshield.

REFERENCES:
patent: 2971191 (1961-02-01), Davis
patent: 3007164 (1961-10-01), Davis
patent: 3210766 (1965-10-01), Parker
patent: 3928748 (1975-12-01), Sauer/St. Gobain
IFI Plenum Abstract of U.S. Pat. No. 3,928,748.

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