A dual-band rejection UWB antenna using EBG

This paper demonstrates a novel technique for notching WiMAX and WLAN frequency bands by means of slotted electromagnetic band-gap(EBG) structure. The proposed EBG structure provides two band rejection characteristics by means of utilizing both left-handed properties of mushroom structure and on the other hand by taking the advantage of longitudinal current flow over the slotted EBG structure. The two demonstrated notch bands can be controlled by mushroom geometry parameters and also they are independent of the initial antenna design.