On the Use of Metamaterial Surfaces for EBG Antenna Improvements

This paper presents several configurations where frequency selective surfaces are used to improve EBG resonator antennas performances. The different detailed structures are mainly focused on the bandwidth limitation of these antennas which has been addressed in various ways. In addition to a wide band antenna, two structures showing a dual band functioning are presented, of which one moreover possesses some frequency agility. The building of several prototypes and their measurement has confirmed the promising theoretical results.