An antenna arrangement composed of at least two individual antennas of the same type and each having a pair of signal applying terminals, and a processing circuit connected to the terminals of the antennas for establishing a selected relation between the voltages across the terminals or between voltages derived from these voltages, wherein, for giving the arrangement a desired radiation polarization characteristic, the individual antennas and the circuit are arranged for causing the total radiation pattern of the arrangement to have mirror symmetry with respect to a selected plane.