▎ 摘　　要

Design and analysis of a graphene-based suspended nanostrip line for integrated circuit applications at terahertz (THz) frequencies are presented. A suspended nanostrip waveguide structure has been analyzed using a full wave electromagnetic (EM) simulator to obtain its transmission line characteristics, such as propagation constant and characteristic impedance. Closed form expressions have been developed for the same. Later, graphene-based plasmonic resonators have been analyzed. Coupled resonators have been used to implement a filter-based diplexer. A split ring resonator has been used to design a sensor for measuring refractive index variation. The transmission spectra of the designed graphene-based SRR have been discussed in detail with the help of full-wave EM simulation tools, providing a vivid vision of the sensing potential of the proposed sensor structure. The simulation results depict two surface plasmon resonance peaks in the transmission spectrum, showing a linear relationship with the dielectric constant of the material under sensing. The tuning capability of the graphene tunable sensor allows its usage in the field of nanodevices and sensor applications. (C) 2018 Society of Photo-Optical Instrumentation Engineers (SPIE)