Designing Dual and Triple-wideband EBG Structures

In this paper dual and triple-wideband EBG structures have been proposed. EBGs are structures that can prohibit or manipulate propagation of electromagnetic waves. There is a wide range of applications for EBG structures. In antenna designing, it is desired that bandgap of the EBG structure cover the bandwidth of antenna to ensure maximum improvement in radiation performance. Thus, wideband EBG structures are of great attraction. The proposed EBGs are applicable for improving radiation performance of ultra-wideband antennas and designing Low-RCS surfaces.