Digital Beamformer Antenna System

Our aim is to develop a microwave (X-band) antenna whose radiation pattern is electronically controlled. The radiation pattern of the regular antennas is determinated by the Fourier-transform of the phase and amplitude distribution on the antenna aperture. This radiation pattern is fixed by the mechanics so the alteration of it is impossible. Therefore let us construct an antenna system, which contains several antenna elements. All elements are actuated by separated transmitters, let us control the amplitude and the phase of the supplying current of the antenna elements. In such way, we are able to control the radiation pattern of the antenna system. The controlling is computerized so that there is a possibility to change the radiation pattern several times in a second.