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首页> 外文期刊>Optical and quantum electronics >Antenna gain enhancement by using metamaterial radome at THz band with reconfigurable characteristics based on graphene load
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Antenna gain enhancement by using metamaterial radome at THz band with reconfigurable characteristics based on graphene load

机译：通过在THz频段上使用具有石墨烯负载可重构特性的超材料天线罩来增强天线增益

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摘要

The reconfigurable concept of a graphene loaded patch antenna with increasing gain is proposed in this paper. We have developed the patch antenna with inset feed for THz band application for which graphene load is used to obtain the reconfigurable characteristic. It has been shown that by increasing the graphene chemical potential, the antenna resonant frequency shifted and the gain increased drastically up to 4 dBi. Additionally, we have shown that antenna efficiency is improved up to 78% which shows more than 100% of enhancement in comparison to basic antenna by increasing the graphene chemical potential. Finally, considering the antenna gain improvement, we have implemented the metamaterial layer over the antenna. In this case, the gain is increased more than 5-6 dBi. In addition, when we put the metamaterial layer over the antenna, the graphene layer shows more linear characteristics. By using parametric studies, we have defined the best point for metamaterial layer around 0.58λ. The final antenna gain is more than 11 dBi, which is useful for THz communication and THz medical imaging systems.
机译：提出了增益增加的石墨烯负载贴片天线的可重构概念。我们已经开发了用于THz频段应用的带有嵌入式馈电的贴片天线，其中使用石墨烯负载来获得可重构特性。已经表明，通过增加石墨烯的化学势，天线谐振频率发生了偏移，并且增益急剧增加，直至4 dBi。此外，我们已经表明，通过提高石墨烯化学势，天线效率可以提高到78％，与基础天线相比，提高了100％以上。最后，考虑到天线增益的提高，我们在天线上实现了超材料层。在这种情况下，增益增加超过5-6 dBi。另外，当我们将超材料层放在天线上时，石墨烯层显示出更多的线性特性。通过使用参数研究，我们为超材料层定义了约0.58λ的最佳点。最终天线增益大于11 dBi，这对于THz通信和THz医学成像系统很有用。

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