Partially reflecting surface loaded graphene–silicon ceramic-based frequency reconfigurable MIMO antenna with pattern diversity for THz applications

Abstract

In this paper, a two-port graphene–silicon-based aerial is planned and inspected. Features that make the planned radiator unique include the following: (i) aperture expended to stimulate the dielectric makes CP waves from 2.4 to 2.56 THz; (ii) loading of partial reflecting surface over the dual-port radiator creates beam tilting by an amount of ±45∘; and (iii) mirror positioning of the feeding slot provides the polarization diversity and enhances the separation close to 25 dB. A layer of graphene above the silicon ceramic with varying chemical potential makes the radiator frequency reconfigurable. After comparing the optimized outcome obtained from HFSS with a CSTEM simulator, it is established that the planned radiator operates efficiently between 2.35 and 3.15 THz with a peak gain of 6.5 dBi. The addition of pattern diversity features improves the MIMO parameters of the proposed antenna and makes it appropriate for THz built cellular applications.