THREE ANTENNAS DESIGN USED BY ULTRA-WIDEBAND WIRELESS SYSTEMS

Communication

Abstract

As there are many challenges in indoor and outdoor wireless propagation, high gain and sensitive antenna design plays crucial role in ultra wideband (UWB) small size systems. In this work, a design of UWB printed microstrip antennas that fed by microstrip transmission line were presented and printed on a substrate Taconic TLY-5 material with relative dielectric constant of 2.2. The proposed antennas were designed to cover the area of UWB frequency range (7.5 GHz) to be suitable for applications of wireless communication systems. The antennas of printed patch shapes are; rectangular patch, circular patch, and as-shaped patch designs with the same dimensions of feeder and ground plane. The proposed antennas were simulated using a package of Computer Simulation Test (CST) microwave studio software through range of 2 to 12 GHz operating frequency. Simulation results and comparison for reflection coefficient (S11), radiation patterns, were presented and discussed over the UWB frequency. These results make the designs are very useful for UWB technology future applications because of the small size low cost.