Design and Simulation of a Novel Dual Band Microstrip Patch Antenna with Defected Ground Structure for WLAN/WiMAX

In this paper, we present a novel planar rectangular microstrip-fed patch antenna for 2.4 GHz and 5.5 GHz. This configuration radiates at 2.43GHZ (2.27‐2.55 GHz) and 5.52 GHz (5.14‐5.90 GHz) for 2.4, 5.2 and 5.8GHz WLAN bands adopting IEEE 802.11b, IEEE 802.11e and IEEE 802.11a WLAN standards, respectively. The proposed antenna is designed and simulated using CST Microwave Studio 2012 electromagnetic solver based on Finite Integration Technique. The antenna utilizes an H‐shaped defected ground structure (HSDGS) cell on the ground plane which has a triangular cut on one side for dualband properties. The effect of different dimensions of HSDGS on return loss is also studied. The condensed size, low cost, ease of fabrication, large bandwidth and excellent radiation parameters in comparison with earlier reported designs are the advantages of the proposed antenna. Further the simulated parameters like gain, bandwidth, VSWR, and return loss are in good conformity with ISM (Industrial Scientific and Medical) and industry standards.