Wideband Fractal Microstrip Antenna for Wireless Applications

Abstract

The necessity for wireless communication and its estoric nature is enlarge during the two decades. In future, it is deduced to be more challenging and elaborate with evolution of different types of fractal antennas. Nowadays, smaller size of electronic equipment demand same size antenna element in order to place properly in the wireless devices without changing the radiation properties of antenna. Antenna plays an important role in WLAN communication system because it performance depend upon the quality of wireless communication. There are different types of fractal antennas like Sierpinski Gasket, Sierpinski Carpet and Minkowski fractal antenna for wireless communication. In Sierpinski Gasket, an equilateral triangle patch antenna is designed by the iterative procedure. Two or more copies of this triangle are generated attached to the original triangle. Sierpinski Carpet fractal antenna consists of square patch antenna which is also obtained by iterative procedure. Maximum iteration is applied to designed antenna is3.The behavior of designed antennas are enquired into such as return loss, gain and ultrawidebandwidth. The various types of slot on the patch helps in increasing the ultrawideband and give well planned result. In this thesis report, different antennas design are given and then study the various effects of different parameter like patch length, patch width, substrate height and dielectric constant for WLAN and WIMAX applications. These antennas are designed using CST 2014 microwave studio. The antennas parameter like return loss, resonating frequency, gain and bandwidth are allocated for each antenna design in order to get the desired antenna.