An innovative fractal monopole MIMO antenna for modern 5G applications

Proposed in this paper is the design of an innovative and compact antenna array which based on four radiating elements for multi-input multi-output (MIMO) applications used 5G communication systems. The are fractal curves excited using open-circuited feedline through a coplanar waveguide (CPW). electromagnetically coupled to inside edge element. array’s impedance bandwidth enhanced by inserting ground structure composed low–high-low between elements. low-impedance section staircase that inclined at angle follow input feedline. This inter-radiating element essentially suppresses near-field radiation adjacent radiators. A band reject filter composite right/left hand (CRLH) mounted back side reduce mutual coupling choking surface wave propagations can otherwise degrade performance antenna. CRLH Hilbert geometry, it was designed act like stop over desired frequency bands. proposed fabricated tested. It covers bands range from 2 3 GHz, 3.4–3.9 4.4–5.2 GHz. has maximum gain 6. 2dBi 3.8 GHz isolation better than ?20 dB. envelope correlation coefficient within acceptable limit. There good agreement simulated measured results.