Antenna rod for a rod antenna for multiple radio services

摘要

An antenna rod for a rod antenna arrangement on a vehicle body, which serves as the ground of the rod antenna arrangement, for electromechanical connection with the electromechanical base connector of a low plastic base part. This base connector is affixed to the vehicle body which part contains the further antenna circuit that is connected to the electromechanical base connector. The antenna rod contains a plastic rod to which an antenna coil is applied. At the lower end of the plastic rod and parallel to its rod axis, an extended electrically conductive element is guided as a coupling conductor, for electromagnetic coupling to the antenna coil, with an overlap of multiple but at least two windings of the antenna coil. The coupling conductor is galvanically separated from the antenna coil by means of a low-loss insulator, to create capacitive coupling to the antenna coil. The coupling conductor, the low-loss insulator, and the antenna rod are connected with one another in mechanically firm manner. The coupling conductor is equipped, at its lower end, with an electromechanical connecting element, for connecting to the electromechanical base connector.