Patent ID: 8610631

Claim:
An antenna rod for a rod antenna arrangement on a vehicle body serving as a ground, said antenna comprising: a base connector configured to form an electromechanical connection to the vehicle body; a base part coupled to the vehicle body; an antenna circuit disposed in said base part, wherein said base connector is configured to form a mechanical connection to said base part, and an electromechanical connection to said antenna circuit; a plastic rod, having a rod axis; an antenna coil coupled to said plastic rod; a coupling conductor coupled to a lower end of the plastic rod and parallel to its rod axis, said coupling conductor configured for electromagnetic coupling to said antenna coil, said coupling conductor forming an overlap comprising at least two windings of the antenna coil, formed by said coupling of said coupling conductor and said antenna coil; an insulator, wherein said coupling conductor is galvanically separated from said antenna coil by means of said insulator, to create capacitative coupling of said coupling conductor to said antenna coil, wherein said coupling conductor, the insulator, and said plastic antenna rod are coupled to each other; and an electromechanical connecting element, coupled to said coupling conductor for connecting to said base connector, wherein said coupling conductor is configured as an electrically conductive sleeve, comprising said insulator acting as a low loss insulator, wherein said electrically conductive sleeve is lined with said low loss insulator acting as an electrically insulating plastic mantle, and being disposed at its inner edge, wherein said insulator surrounds said plastic rod that is introduced into said electrically conductive sleeve with said plastic mantle, and wherein said plastic rod carries said antenna coil, at least over a length of said overlap, with shape fit, and said electrically conductive sleeve contains an electromechanical connecting element at its lower end.