EBG Structures and Its Recent Advances in Microwave Antenna
Electromagnetic Band Gap (EBG) structures are non-periodic structures that show unique electromagnetic features, such as frequency band gap for surface waves and in-phase reflection coefficient for incident plane waves, which makes them desirable for low-profile antenna designs. A very innovative topic for antenna scientists and engineers are the applications of EBG structures in antenna designs. In this paper, the authors have initially reviewed the fundamentals of these structures and then demonstrating recent advances in this field by using several representative microwave antenna examples. It has been concluded that proper utilizations of EBG structures could enhance the performance of low profile antennas.