A Star Shaped Superwide Band Fractal Antenna for 5G Applications

A superwide band (SWB) microstrip fractal antenna for 5G communication is proposed in this paper and a snowflake like structure is achieved using star shaped fractal geometry. The configuration of the proposed design has a substrate of Rogers RT5880 having thickness of 0.787mm, dielectric constant of 2.2 and loss tangent of 0.0009. The presented antenna is simulated using CST Microwave studio and parameters of the proposed structure are optimized so that it is suitable to be operated in the frequency range from 17.22GHz to 180GHz with the fractional bandwidth of 165%. The overall dimension of the antenna is just $20\text{mm}\times 20\text{mm}$ which is very compact. The peak gain of 10dBi and average gain of 6.4dBi is acquired and over all appreciated gain is maintained throughout the entire range. Result curves such as S-parameter, VSWR, radiation pattern, gain and Input impedance have been depicted and discussed in the paper.