Multi-Band Fractal Antenna for WiMAX Application

The fractal antennas that have the multiband operation due to the self-similar property in fractal geometry, which plays a key role to create a fractal circular monopole patch antenna. The other important property that is, Space-filling property which actually determines the reduction in the size of the antenna. This property adds more electrical length in less volume which reduces the size of the antenna. Based on these two properties the fractal antennas are designed. These two properties of fractal geometry making the fractal antenna to apply for several advanced applications. The CPW feed also helps the antenna to achieve the bandwidth in the ratio of 6:1.Though it is difficult to construct a CPW feed for an antenna, but it exhibits wider bandwidth. The proposed antenna is designed by using the CPW feed for fractal antenna that is, Crown shaped CPW-fed circular monopole fractal antenna and implemented to effectively support mobile worldwide interoperability for microwave access (Mobile WiMAX), and WiMAX which operate in the 2.3/2.5 GHz (2.305–2.360 GHz/2.5–2.69) GHz.