UWB Antenna for WLAN Band Rejection
Ahmad W. Alshareef, Sari F. Amle, Noor M. Awad, Mohamed K. Abdelazeez |Pages: 62-70|

Abstract—An ultra-wide band (UWB) planar antenna is designed with a filtering property to reject the interference between the UWB and wireless local area network (WLAN) applications. In this paper, a simple rectangular patch with one rectangular cut in each of its corners is designed on FR4-substrate with 50 Ω microstrip feed line and partial ground plane. A band rejection for the WLAN application at 5 GHz is created by etching two circular slots connected by a rectangular strip in the patch. The design is investigated using two electromagnetic simulators; high frequency structure simulator (HFSS) and computer simulator technology (CST). The simulation results show good impedance matching over 3.8-14.5 GHz for return loss (RL)≥10 dB with a band rejection range from 4.7 to 5.9 GHz. Higher gain and efficiency at the pass bands during sharp drop at the rejected band are achieved. Dipole shape radiation pattern in the E-plane and good omni-directional pattern in the H-plane are achieved over the frequency range of interest.