Different design forms are combined in our design series of circular antenna arrays. The common feature is the circular arrangement of the antennas. According to specification, the individual antenna elements can be attached in front of a reflector or developed without it. The influence of the coupling between the structures on the matching of the respective element can be considered in every structure. For scanning the individual antenna channels, a changeover switch, LNA or PA according to customer preference, as well as filter elements, can be integrated.