Active control on EBG structures for multiband antenna applications

In this work, a parametric analysis of an EBG layer behaviour based on continuous and discontinuous strips has been presented. The obtained results show that continuous and discontinuous strips present dual behaviour when considered as basic elements in the EBG structure. In addition, it has been observed that the discontinuity periodicity act on duality bandwidth. Thus, this duality can be electronically controlled by using diodes to switch between dual cases. Diode capacitor feature may introduce a shift on the duality bandwidth; this shift can be either compensated by the structure dimension or exploited to achieve bandwidth tuning. Experimental results have been presented and validate the simulated ones.