Circularly Polarized Slot Antenna for wireless Applications

Abstract

This letter presents a new design for a circularly polarized square slot antenna with an enhanced impedance bandwidth. The antenna structure includes a pair of inverted-L grounded arms, around two opposite corners which can result the CP bandwidth of the proposed antenna at 5.14-7.78 GHz .The designed Circularly Polarized Slot Antenna with size 25 mm (length) ×25mm (width) ×0.8 mm (height) is greatly improved for achieving a significantly enhanced impedance bandwidth of 2–13 GHz with VSWR ≤ 2. The simulation results have been showed that using inverted-L grounded arms, circular and strip patches are increasing the CP bandwidth and reduce the size of the proposed antenna.