Design and Optimization of Multiband Fractal Microstrip Patch Antenna for Wireless Applications

This paper presents multiband I shaped fractal patch antenna. There are three iterations have been applied one by one on square patch which results in fractal patch antenna which resonates at 4.7 GHz, 6.5 GHz, 7.7 GHz and 8.5 GHz respectively with bandwidth of 150 MHz, 135 MHz, 520 MHz and 1.2 GHz at corresponding frequencies. This antenna finds applications for defense and secure communication, C band (4 GHz to 8 GHz) and X band (8 GHz to 12 GHz) applications where antenna can be used for satellite communication and RADAR application. Proposed antenna is designed using IE3D and results are analyzed in terms of gain, return loss, directivity, bandwidth and VSWR.