A Novel Multi-band High-Gain Slotted Fractal Antenna using Various Substrates for X-band and Ku-band Applications

A novel geometry of a slotted fractal antenna is presented in this paper for the multi-band applications in X-band as well as Ku-band. The proposed antenna is designed for three commonly used substrates—FR4, RT Duroid and Teflon. The performance in terms of reflection coefficient, impedance bandwidth, radiation pattern and peak gain is analyzed for all the three substrates in high-frequency structure simulator (HFSS). The gain of the proposed multi-band fractal antenna is observed to be quite high keeping in view the small size of the antenna. The proposed antenna using FR4 substrate is also fabricated whose reflection coefficient characteristics and gain are found to be in agreement with the simulated results. The comparison of the proposed antenna with the earlier reported fractal antennas operating in X-band and Ku-band is also done in terms of many parameters to prove the significance of the proposed antenna.