Antenna arrangement

An antenna arrangement comprising a plurality of antenna units, each antenna unit comprising:

• an input port;
• a power divider for dividing an input signal from the input port into a major and a minor part, with a certain ratio (1:X) between said parts;
• a network with a sum input port, a difference input port, and a first and a second output port, in which signals connected to the sum input port are output at both output ports with a first phase relation between the signals at the two output ports, and signals connected to the difference input port are output at both output ports with a second phase relation between them;
• a first and a second antenna element of respective first and second polarizations, wherein
• antenna units in said plurality are arranged to cooperate in that their networks and power dividers are arranged so that:
• said major part of an input signal to an antenna unit is connected to either the sum or the difference port of a first network and said minor part of an input signal to an antenna unit is connected to the other port of a second network,
• the first and second output ports of a network are connected to first and second adjacent antenna elements of the same polarization.