Wide Band Circularly Polarized Antenna for (5–7GHz) WLAN/WiMAX/Wireless Applications

The antenna proposed in this paper exhibits wide band, circularly polarized characteristics for various wireless applications. A circular slot is cut from ground plane and a rectangular strip is protruded from the ground. A 50 ohm microstrip line of inverted L shape is attached on the opposite side of the ground. Two parasitic elements of inverted L shape are placed near to feed line. The proposed antenna has range of impedance bandwidth from (5.16-6.95GHz) and corresponding axial ratio bandwidth from (5.08-5.7GHz). The proposed antenna is applicable for WiMAX (5.5GHz) and WLAN (5.2/5.8GHz), ITS band (5.85-5.925GHz). All the results are simulated successfully.