Wide band Slotted Microstrip Antenna for Wireless communications

The proposed antenna design approach is based on a single-layer, rectangular patch (Length=80mm and Width=60mm) with inverted U-slot, horizontal and vertical edge slots on the patch with coaxial probe feed. The proposed antenna is modeled using IE3D electromagnetic (EM) simulation packages namely IE3D from Zeland. The proposed antenna shows the return loss below -10dB in the frequency range from 3.5GHz to 8.3GHz.The maximum directive gain is 4.8 dBi at 6.0GHz and minimum VSWR isfound1.6 at 4.0 GHz. The antenna design is suitable for wireless local area network (WLAN) operation in the 5.2/5.5/5.8 GHz band. However, to further support the worldwide interoperability for microwave access (WiMAX) applications and sufficiently large bandwidth to cover the 5.8 GHz WiMAX bands.