Antenna rod for a rod antenna for multiple wireless services

摘要

The antenna rod (1) has a plastic rod (7) on which an antenna-spiral coil (2) is attached. An elongated electrically conductive element is guided as coupling conductor (4) for electromagnetic coupling to the antenna-spiral coil at the lower end of the plastic rod and parallel to the rod axis (8) in clamping surface of the two windings of the antenna-spiral coil. The coupling conductor is isolated from the antenna-spiral coil through a low-loss isolator so that a capacitive coupling is given to the antenna-spiral coil.