Design of multi-band frequency reconfigurable micro-strip patch antenna

Abstract

This document confers a multi-band frequency reconfigurable micro-strip patch antenna applied to different system applications. The proffered antenna consists of 3x monopole radiators , 3x rectangular tuning strips with a microstrip feed line. With these structures incorporated, the antenna can resonate on 3x different frequencies while maintaining low profile and uncomplicated shape. To verify the results simulated, a sample of this antenna has been designed , fabricated and tested. The simulated and measured (tested) return losses, radiation patterns are depicted. Measured results show that the antenna can be designed to resonate on the frequency bands of around 2.5 GHz for the GPS systems and for the IEEE 802.11b&g WLANs systems, 3 GHz for the WiMAXs systems and 5 GHzs for the IEEE 802.11a WLAN systems.