Patent ID: 6985123

Claim:
A dual-polarized antenna array having a main lobe which can be depressed, said array having a changeable down tilt angle, said antenna array comprising: a reflector; plural antenna element arrangements, at least some of which are arranged on different height lines when seen in the vertical direction in front of the reflector, the antenna element arrangements being constructed and arranged for radiating and/or receiving two polarizations at right angles to one another, with the polarizations being aligned at an angle, inclined to the vertical, of approximately +45° on the one hand and −45° on the other hand, the antenna element arrangements comprising: dipole structures, the plural antenna element arrangements further comprising a compensation arrangement for compensating for movement drift, as a function of the depression angle, of the horizontal overall polar diagram in the horizontal or azimuth direction for at least one of said polarizations, the compensation arrangement comprising at least one adjustable compensation antenna element arrangement, whose associated polar diagram is changed or shifted in the opposite sense to the polar diagram of the at least one other antenna element arrangement as the polar diagram is increasingly depressed.