DESIGN OF MODIFIED FRACTAL MICROSTRIP PATCH ANTENNA FOR MULTIBAND APPLICATIONS

In this paper a modified fractal microstrip patch antenna is designed and simulated. The three iterative forms of the designed antennas is considered. The designed antennas have the multiband wireless applications such as IEEE 802.11 a (5 GHz), b (2.4 GHz) g (2.4GHz) and n (2.4/5 GHz). The designed antennas also show the wide band behavior at different resonating frequencies. The radiation pattern of the designed antennas is omnidirectional in all the fractal geometries. The band width at the resonating frequency of 2.4 GHz is nearly   one GHz with a return loss of – 11 dB. The return loss achieved at 3.6 GHz is 13.5 dB and at 5 GHz is 16 dB. The antenna also shows the wide band behavior between 5 GHz and 6 GHz. The simulation of these antennas is done using HFSS.

Keywords: Fractal, Microstrip, Multiband Antenna.