Active metallic photonic band-gap materials (MPBG): Experimental results on beam shaper

We focus our attention on the possibilities to control the beam radiated by antennas, which are initially omnidirectional using active metallic photon ic band-gap materials (AMPBG), In fact, MPBG composed of continuous or disc ontinuous wires present different and interesting characteristics when they are used as antenna reflector or radome. Adding active components on wires allows to switch from continuous to discontinuous structures. Wires with a ctive elements on can then be placed inside a structure, which shapes the b eam radiated by a dipole antenna, Experimental results show that it allows to switch on/off the beam or to change its shape.