Design of Hybrid Fractal Antenna for Multiband Applications

Abstract

This paper takes research on design of multiband microstrip patch antenna. The proposed patch antenna can resonate at four unique frequencies between 2 GHz and 9GHz out of which two are considered to be useful bands. To accomplish multiband frequency, proposed finite element method is employed to design the rectangular Microstrip Patch Antenna (MPA). The circular patch is designed and then united with more circles to make a new design. The proposed antenna is designed on FR4 Epoxy substrate with specifications: relative permittivity = 4.4, relative permeability = 1, di-electric loss tangent =0.02 and thickness = 1.6 mm .The return loss for all the resonant frequencies is less than-10dB. The proposed design exhibits the overall gain of 9.5 dB On other hand, individual gain of antenna is 9.3 dB and 1.9 dB at 5.09 GHz and 9.36 GHz respectively in the final iteration, and is used for many satellite communications transmissions, some Wi-Fi devices, some cordless telephones as well as some surveillance and weather radar systems.