Optimized radiation patterns

An antenna arrangement, comprising:

• at least two antenna arrays, each array comprising a plurality of radiating elements being arranged so as to have at least a plurality of corresponding radiating element positions, wherein for each radiating element there is associated an excitation means having a magnitude weight and a delay weight;
• a first set of the excitation means being associated with a first array providing a first radiation pattern and a second set of the excitation means being associated with a second array providing a second radiation pattern, wherein one of the first and second sets of the excitation means has differing delay weights, and wherein at least two respective excitation means associated with a corresponding radiating element position of at least two respective arrays have at least two different magnitude weights;
• and,
• at least two respective excitation means associated with a corresponding radiating element position of at least two respective arrays have at least two different delay weights and wherein the excitation weights of the at least first and second sets of excitation means are selected so that the main beam directions of the at least two antenna arrays essentially coincide and so that at least the magnitude of a correlation coefficient associated with respective signals communicated over the at least first and second arrays is below 0.7 in a given side-lobe region with regard to the main beam peak, or so that the radiation amplitude patterns associated with the at least first and second set of excitation means have an envelope with a substantial null-fill difference in a given side-lobe region with regard to the main beam peak.