Antenna arrangement for circularly polarized satellite radio signals on a vehicle

An antenna arrangement for the reception of circularly polarized satellite radio signals having a free space wavelength λ and a frequency f, the antenna arrangement comprising at least one circularly polarized satellite reception antenna positioned above an electrically conductive base surface, with a. relative antenna height ha/λ<0.15 whose outline is inscribed by a circle K about its phase center PZ having a relative antenna radius ra/λ<0.15, the antenna arrangement further comprising the following features:

• a director that comprises a horizontal electrical conductor that has two conductor ends and that is guided over a director length Ld at a director height hd above the conductive base surface, and indeed at least approximated to a jacket surface Mz of a cylinder oriented perpendicular to the conductive base surface and having a cylinder radius rz and a central axis Z through the phase center PZ of the satellite reception antenna, wherein the horizontal electrical conductor is angled at its two conductor ends and extends from there as vertical conductor in each case toward the conductive base surface and is electrically conductively connected thereto;
• the director being adapted by designing the director length Ld, the director height hd, and the vertical conductor in a manner such that. its natural resonant frequency is set in frequency proximity to the frequency f.