BEAM-FORMING NETWORK DEVELOPMENTS FOR EUROPEAN SATELLITE ANTENNAS.

The article reports on the development of beam-forming network for European satellite antennas which is known to be connected to that of beam-forming networks. Related topics discussed include a proposal for a beam-forming network classification, beam-forming network topologies, beam-forming network transmission lines and transmission lines. It is concluded that this paper reviewed the basic concepts and techniques of beam-forming networks for satellite multiple beams and reconfigurable antennas.