Airbus DS GmbH has developed a Ka-band antenna assembly which offers steerable up-/ downlink connections (receive, transmit) for satellites in low earth orbit (LEO). The antenna consists of a dual reflector antenna and a mechanical steering mechanism. The pointing mechanism comprises the steering unit, a standardised azimuth stage and an elevation stage, which is custom-made.The Ka-band antenna assembly (KAA) is part of the antenna pointing assembly (APA) product family by Airbus DS GmbH. The steerable antenna system KAA was completely developed in Germany.The antenna has to fulfill strict requirements concerning gain, sidelobes and polarisation purity and the agile steering mechanism needs a highly stable and symmetric structure of the antenna. Therefore the antenna is designed as a centre-fed dual reflector antenna. The engineering model successfully passed all qualification tests. The antenna was optimised by means of a hybrid approach and different calculation techniques. In this paper both the components, Ka-band antenna and steering mechanism, are presented.