Design a Compact UWB Monopole Antenna with Triple Band-Notched Characteristics Using EBG Structures

In this paper, a compact ultra-wideband (UWB) monopole antenna with triple band-notched characteristics is presented. These triple band rejections are produced by inserting the Complementary Co-directional Split-Ring Resonator (CC.SRR) on the radiating element for WiMAX/WLAN (3.4-3.95 GHz/5.35-5.9 GHz) and Electromagnetic Band Gap (EBG) structure in the vicinity of transmission line for X-band satellite communications (6.7-7.7 GHz). The proposed antenna with a total size of 18 x 20.9 x 1.63 mm(3) has been constructed and tested. An equivalent RLC circuit model is proposed and investigated. The simulated and measured results show that the proposed antenna has an impedance bandwidth (VSWR < 2) extanding from 3.05 GHz to 14 GHz with triple notched bands of [3.3-3.9 GHz], [5.25-5.86 GHz] and [6.7-7.7 GHz]. The triple band notched characteristics and the good radiation patterns make the proposed antenna a good candidate for the UWB applications.