Dual Band Rejection UWB Antenna Using Slot and a Novel Modified $\Psi$-Shaped Parasitic

Abstract

A dual band rejected UWB antenna is suggested. The radiating patch is procured by the convergence of an ellipse with a rectangular structure. The UWB bandwidth of 2.99 to 10.12 GHz is accomplished by etching circular snick at extremity of rectangular structure along with defected ground plane. The rejection bands from 3.12- 3.69 GHz for WiMAX and 5.18- 6.14 GHz for WLAN are realized by etching $U$-shaped slot and a novel modified $\mathrm{\Psi}$-structured parasitic respectively. The proposed antenna has stable gain, radiation patterns, above 94% of radiation efficiency and linear transmission characteristics makes it satisfactory for portable wireless applications.