Flexible and compact EBG structure design for Multi-band applications

A novel EBG structure is proposed. The proposed EBG (denote as DAS-EBG) structure is compact and flexible. The proposed EBG structure consists of a mushroom-type EBG with four symmetrical U-shaped slots etched on it, which is compact and flexible. Due to the change of surface resistance of multiple U-shaped slots, DAS-EBG got a width reduces of 33.75% and height reduces of 20%. By changing the size of the U-shaped slots, the number and size of DAS-EBG surface resonance points can be flexibly changed. The proposed EBG structure can be used in future broadband and multi-frequency applications.