Active metallic photonic band-gap materials used for polarization diversity

The latest indoor communication systems often need a diversity solution to cope with fading effects. A solution which does not involve directly the antenna itself but its surrounding has already been proposed by the authors. Experiments have demonstrated the possibility of the beam diversity switching using this solution based on active photonic band-gap materials (AMPBG). Moreover it is known that, the polarization diversity can also improve the communication capabilities. In order to obtain an active polarization diversity, we compose a dual polarization metallic photonic band-gap material (MPBG) in which the antenna is embedded. The MPBG are periodic structures composed of metallic wires.