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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 signicantly enhanced impedance bandwidth of 2-13 GHz with VSWR ≤ 2.doi:10.17932/iau.ijemme.m.21460604.2016.6/3.1267-1274 fatcat:nb6gtcgbdzhw7gvjt4z5z3fwnq