A Compact Ultra-Wideband Patch Antenna with Dual Band-Notch Performance for WiMAX / WLAN Services

Abstract

This paper presents a compact size ultra-wideband (UWB) patch antenna operating over frequency range of 3.02-13.84 GHz and has dual-band notched characteristics for WiMAX and WLAN wireless narrow-band applications. The designed antenna has a monopole nature constructed on a FR4-epoxy substrate with a microstrip transmission line feed style and has a partial ground plane configuration. For developing a dual-band notch performance, a mirror L-shaped connected together from the top has been etched near to the feed line terminal connected to the patch for suppressing the WiMAX operating band. Furthermore, a spilt ring resonator (SRR) slot configuration has been notched on the lower part of the patch for eliminating the WLAN frequency band. The proposed antenna has been designed using CST-EM software package. All the dimensions introduced in the proposed antenna have been optimized to obtain the proper antenna performance. The antenna characteristics have been investigated in terms of the impedance bandwidth, surface current distribution, maximum gain, radiation efficiency, and radiation pattern. The simulation results demonstrate that the antenna has good performance for UWB services.