Design and analysis of a multiband koch fractal monopole antenna

This work presents the design and investigation of the monopole and Koch fractal antenna. The fractal concept and geometry has been used in antenna design to obtain multi-band behavior and miniaturized size, as both of these characteristics are important requirements in current antenna design trends. The aim of this paper is to evaluate the antenna performance between monopole antenna and third iteration Koch fractal antenna. Antenna properties such as reflection coefficient (S₁₁), bandwidth, gain and radiation pattern are analyzed and discussed in this paper. The result shows that both antennas can operate well at respective designed resonances. However, the third iteration Koch fractal antenna is also proven to be advantageous over the planar monopole - more number of resonant frequencies, larger bandwidth and smaller size.