Analytical solution and simulation of multiband fractal Antenna for IoT applications

This paper would give an insight into finding analytical solution for designing fractal antennas of Koch curve type fractal geometries. An analytical equation to generalize for any Koch curve length is derived, which meet the basic nature of any Koch curve type fractal geometries. A numerical example detailed explains the validity and generality of the derived analytical solution. A micro-strip patch of snowflake structured fractal geometry considered for multi-band antenna, fulfill the needs of antenna for IoT applications. The dimensions of the fractal antenna are related to the resonance frequencies and input impedance. The figures of merit of fractal antennas are analyzed by simulating microstrip patch antenna of Koch curve type snowflake fractal geometries, using HFSS tool.. The fractal antenna simulated would fit with the specifications of Internet of Things (IoT) applications, like Omni directionality and the frequencies of operation. The simulated results have resonant frequencies 5.58GHz, 12.50GHz and 18.56GHz ,corresponding return loss, S11 of -15.6392dB, -17.9265dB, -16.2633dB and its bandwidth of operation 1.9 GHz,1.29 GHz and 1.43 GHz respectively.