▎ 摘　　要

In this paper, agraphene-based (MIMO) antenna is designed and examined. Two unique properties of the proposed terahertz (THz) MIMO antenna are (1) circular polarization is achieved through an asymmetrical cross slot, etched over the graphene patch; and (2) a bidirectional radiation pattern is achieved through oppositely oriented identical antenna ports. Mutual coupling between the antenna ports is less than -35 dB. Due to the inclusion of the pattern diversity concept, a low value of envelope correlation coefficient is achieved. The proposed THz radiator operates over the frequency range of 4.67-4.87 THz, along with a 3 dB axial ratio between 4.76 and 4.81 THz. This type of antenna is widely employable for biomedical applications. (c) 2022 Optica Publishing Group