Patent ID: 6307516
Filing Date: 2001-10-23
Classification: H01Q

Abstract:
An antenna system for a radio of a vehicle, said antenna system comprising:a vehicle window;a conductive grid formed in the vehicle window and having a plurality of horizontal and generally parallel conductive elements for heating the vehicle window during a heating operation;first and second bus bars connecting the horizontal conductive elements at opposite ends;first and second vertical conductive elements embedded in said vehicle window and arranged substantially orthogonal to said horizontal conductive elements;a first tuning element coupled to said first vertical conductive element and substantially orthogonal thereto, wherein said first tuning element has a length selected so as to substantially match a characteristic impedance of an RF signal transmission path; anda feed line coupled to one of the first and second bus bars, wherein the feed line transmits current to the conductive elements during the heating operation and further transmits RF radio wave signals.