Abstract A circular polarization generation technique is implemented in the rectangular dielectric resonator antenna (DRA) using graphene material. A partial coating of graphene material on the faces of DR is being used instead of the conventional metallic coating for obtaining the circularly polarized response. This coating acts like the electric wall is arranged in orthogonal fashion on the faces of DR. It generates the orthogonal degenerate modes inside the DR which is amenable for the generation of circular polarization. The proposed antenna provides a wide 10-dB impedance bandwidth of 48.86% and 7.06% of overlapped 3-dB axial-ratio (AR) bandwidth. The wideband response is obtained due to the merging of higher-order modes inside the rectangular DR. Furthermore, the AR bandwidth can be tuned at different frequencies within the operating passband by varying the arrangement of orthogonal coating.

中文翻译：

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用于太赫兹应用的具有圆极化产生技术的宽带石墨烯涂层介电谐振器天线

摘要 在使用石墨烯材料的矩形介质谐振器天线 (DRA) 中实现了圆极化生成技术。DR 表面上的部分石墨烯材料涂层被用来代替传统的金属涂层，以获得圆偏振响应。这种涂层的作用就像电墙以正交方式排列在 DR 的表面上。它在 DR 内生成正交简并模式，可用于生成圆偏振。建议的天线提供 48.86% 的 10-dB 阻抗带宽和重叠的 3-dB 轴向比 (AR) 带宽的 7.06%。宽带响应是由于矩形 DR 内高阶模式的合并而获得的。此外，