Owing to unique electromagnetic properties and support of surface plasmon polariton at terahertz frequency, graphene has gained momentum for the realization of the graphene plasmonic THz antenna. The appropriate selection of substrate for graphene THz antennas can provide an effective performance to the antenna. In this paper, we investigated the performance of graphene THz antennas over silicon-based substrates such as silicon, silicon dioxide, silicon nitride, and silicon carbide in order to study the impact of silicon-based substrates on graphene THz antennas. Antennas are analyzed in terms of the reflection coefficient, resonant frequency, impedance bandwidth, radiation pattern, half-power beamwidth, front to back ratio, and directivity. The proposed graphene THz antennas over silicon-based substrates will be promising for THz short-range communication, sensing, and biomedical application.

由于太赫兹频率具有独特的电磁特性和表面等离子体激元的支持，石墨烯为实现石墨烯等离子体激元THz天线提供了动力。基底的石墨烯的THz天线适当的选择可以提供有效的性能到天线。在本文中，我们研究了石墨烯太赫兹天线在诸如硅，二氧化硅，氮化硅和碳化硅等硅基衬底上的性能，以研究硅基衬底对石墨烯太赫兹天线的影响。分析天线的反射系数，谐振频率，阻抗带宽，辐射方向图，半功率波束宽度，前后比和方向性。