Modified sierpinski monopole antenna for UWB applications with multibands

This thesis reports the modified design of Sierpinski fractal antenna with a ring structure for UWB applications. The fractal system is a method to miniaturize the antenna dimension to enhance its radiation and broadband properties. Due to the self-similarity property possessed by the fractal structure it has the multiband behavior. The proposed modified antenna with ring structure operates in the frequency range of 4.06 GHz to 9.13 GHz. The introduction of ring structure improves the bandwidth of the antenna. The proposed antenna developed two bands with the resonant frequencies of 4.76 GHz and 8.6 GHz. The each band operates with a return loss of −51db and −58.37db respectively. The design and performance analysis of the proposed antenna was done with CST Microwave Studio software.