CPW-Fed Micro-Strip Patch Antenna for Wireless Communication

Abstract

A compact microstrip patch antenna (RMPA) using systematic coplanar waveguide (CPW-Fed) dual-band inverted U-slotted shaped printed antenna has designed for WiMAX/WLAN applications in this paper. Represent the antenna has an axial ratio is near about 2. A prototype CPW-Fed antenna was fabricated with FR4 Substrate with a dielectric constant of 4.3 and thickness $\mathrm{h}=1.6$ mm. The antenna primarily consists of an asymmetrical coplanar waveguide with inverted U-slotted patch and excite by a $50\ {\Omega}$ CPW feed line for impedance matching to generate wide quad operating bands. This antenna is suitable for the range from 2.51 GHz to 3.96 GHz and 5.2–5.9 GHz. It is designed miniaturized CPW-Fed microstrip patch antenna has a compact size $35\ \mathrm{mm} \times 39\ \mathrm{mm}$. This antenna to improve the gain, impedance bandwidth and also have lower return losses, better impedance matching. The main purpose of this work is to propose a wideband and improved gain antenna for mobile WiMAX, Wi-Fi/WLAN as well as military applications. The simulated results show that the proposed antenna has achieved wider bandwidth with a satisfactory gain by introducing a probe fed with shorting pin in the assistant of the partial ground plane.