Circularly polarized tunable graphene-dielectric resonator based hybrid MIMO radiator with multidirectional pattern diversity for THz application

In this paper, a four-port graphene-dielectric resonator based MIMO radiator is structured and examined. The exclusive properties of designed radiating structure are: (i) designed aperture creates the circularly polarized (CP) waves in between 2.51 and 2.75 THz; (ii) proposed multiport aerial is structured so that every port is radiated in different direction; and (iii) change in the chemical potential of graphene creates the reconfigurable property in the designed antenna. The proposed antenna design works well between 2.49 and 2.85 THz with the isolation level approx. 20 dB among antenna ports. Radiator gain is about 4.5 dBi within the working band. The proposed antenna has stable far-field characteristics and a decent value of the MIMO parameter. All these features make the designed radiator employable for wireless communication systems at THz frequency.