Design of Wideband Fractal MIMO Antenna using Minkowski and Koch Hybrid Curves on Half Octagonal Radiating Patch with High Isolation and Gain for 5G Applications

Abstract

This article represents a Multiple Input Multiple Output (MIMO) hybrid fractal antenna with a wider bandwidth. The hybrid fractal MIMO antenna is created by integrating Minkowski and Koch curves on a half octagonal radiating patch. A wider impedance bandwidth 20. 4GHz (1. 0 to 21. 4GHz) and 6. 10GHz (23. 9 to 30GHz) along with fractional bandwidth of 182. 14% and 22. 63% has been achieved by using an amalgamated fractal configuration and a tapered microstrip feed line. The proposed antenna retains high isolation between-20 to-50dB in the entire frequency range along with a DG value greater than 9. 99 dB, ECC less than 0. 02 and acceptable value of gain. Hence, the proposed hybrid fractal MIMO antenna is a proficient candidate for 5G, 3. 5GHz band (3. 4 – 3. 6GHz), 5G NR (New Radio) frequency bands (3. 3 – 5. 0GHz), LTE band 46 (5. 15 – 5. 925GHz), EU (European Union) 5G frequency band (5. 9 – 6. 4GHz), UWB applications (3. 1 – 10. 6GHz) and 5G 26GHz frequency band.