This paper proposes a graphene patch antenna for dual-band operation while maintaining a low profile. The antenna consists of the metasurface-based 4 x 4 AMC configuration and the square graphene patch driven through the aperture coupling. The fundamental TM₁₀ mode of graphene patch excites the first resonance frequency, while the TM₁₀ and antiphase TM₂₀ modes of metasurface simultaneously excite the second wide frequency band. The first resonance frequency excited by the graphene patch can be reconfigured by varying the external DC bias voltage on the graphene patch. An equivalent circuit of antenna using lumped elements has also been proposed using a vector fitting algorithm. The proposed antenna with a profile height of $0.12{\lambda }_0$ (where ${\lambda }_0$ is free space wavelength) at a center frequency of 1.14 THz achieves the gain from 7.06 dB to 10.4 dB in the first band and an average gain of 10 dB in the second band.

本文提出了一种用于双频操作的石墨烯贴片天线，同时保持低调。该天线由基于超表面的 4 x 4 AMC 配置和通过孔径耦合驱动的方形石墨烯贴片组成。石墨烯贴片的基本 TM ₁₀模式激发第一个共振频率，而超表面的 TM ₁₀和反相 TM ₂₀模式同时激发第二个宽频带。石墨烯贴片激发的第一共振频率可以通过改变石墨烯贴片上的外部直流偏置电压来重新配置。还使用矢量拟合算法提出了使用集总元件的天线等效电路。建议的天线的轮廓高度为$0.12{\lambda }_0$（在哪里${\lambda }_0$是自由空间波长）在 1.14 THz 的中心频率下，在第一个波段中实现从 7.06 dB 到 10.4 dB 的增益，在第二个波段中实现 10 dB 的平均增益。