A lumped-element unit cell for beam-forming networks and its application to a miniaturized Butler matrix

Leaky wave enhanced feeds for multibeam reflectors to be used for telecom satellite based links

Mutual coupling reduction of Fabry¿Perot SIW feeds using a double partially reflecting pin-made grid configuration

Frequency selective surfaces for extended bw backing reflector functions

Overlapped EBG' s as Feed Enhancers for Multi Beam Reflector Systems: Demonstrator Performances