Horse-Shoe ShapedStacked Microstrip Patch Antenna for WLAN, WiMAX and IMT Applications

This paper illustrates the design and performance analysis of proposed stacked horse-shoe shaped micro strip patch antenna. In the proposed stacked antenna design, a rigid substrate having thickness 1.57mm and flexible substrate having thickness 0.2mm has been stacked. In the proposed antenna design, there are total two layers of substrates, where the flexible substrate has been placed on the upper surface of rigid substrate. The rigid and flexible substrates employed in the proposed antenna design are of duroid material having dielectric constant of 2.2. In the proposed antenna design, the rigid substrate has ahorse-shoe shaped patch on the upper surface and a ground on the bottom surface. The performance of the proposed antenna design has been analysed in terms of resonant frequency, impedance bandwidth, VSWR, impedance, return loss, gain and directivity. The proposed antenna design has resonant frequencies at 2.18 GHz and 5.2 GHz having return loss of -22.496dBand -55.012dB, respectively. The proposed design has two operating bands having operating frequency range of 2.02GHz-2.43GHz and 3.22GHz-6.13GHz. The proposed antenna has been designed and simulated using CST microwave studio 2014. The proposed antenna design can be used for WLAN, WiMAX and IMT applications.