High gain circularly polarized graphene inspired dielectric resonator antenna for 6G IOT THz optical communication and optical refractive index Biosensing applications

In this article a high gain (≈13dBi) circularly polarized dielectric resonator antenna (DRA) has been designed with silicon and graphene based nano materials for 6G terahertz (THz) nano communication and bio sensing applications. This antenna having 2.2 % (4.32 to 4.42THz) 3 dB axial ratio and 3.72 % (4.32 to 4.5 THz) impedance bandwidth. Circular Polarization (CP) is achieved by the combination of Silicon/11.9 and Graphene based cylindrical dielectric resonator with 450 inclined rectangular silicon dielectric slab having height 8.4 µm. Patch top cylindrical dielectric resonator filled with Silicon/11.9 material along with graphene material having chemical potential 0.1 eV and relaxation time 0.1 ps at 3000 K temperature. Proposed DRA having 55 % radiation efficiency with 13dBi gain to utilize its directive property as a bio sensor application. Proposed DRA also use as high frequency optical beam to utilize this DRA works as bio sensor to detect the hemoglobin in bio molecules having average sensitivity 2750 GHz/RIU, FOM-11.38 and Q factor 71.0. So that above properties proposed DRA is good candidate for 6G optical /nano communication and bio sensing applications.