The National Natural Science Foundation of China (General Program, Key Program, Major Research Plan)
太赫兹通信由于其具有传输速率高及容量大等特点,在未来无线通信中具有独特的优势。以方环单极子天线单元为基础,设计了一种太赫兹频段的超宽带圆极化微带阵列天线,通过改变环形天线单元结构使天线表面的电流实现不对称流动,同时利用三角微扰改变电流纵横比,实现圆极化；天线阵列由2×4天线单元组成,和天线单元相比,不仅增加了天线的增益,而且优化了天线的方向性,仿真结果表明该天线阵列工作在天线81-112 GHz,相对带宽为32%,最大增益可达15 dBi,在太赫兹通信中有着很好的应用前景。
Terahertz communication has unique advantages in future wireless communication because of its high transmission rate and large capacity. Based on the square ring monopole element antenna, an ultra wideband (UWB)circularly polarized (CP)microstrip array antenna in terahertz band is designed. By changing the structure of the ring element antenna, the current on the antenna surface can flow asymmetrically At the same time, triangular perturbation is used to change the aspect ratio of current to realize circular polarization; The antenna array is composed of 2 × 4 antenna elements, Compared with the antenna unit, it not only increases the gain of the antenna, but also optimizes the directivity of the antenna. The simulation results show that the antenna array works at 81 GHz-112 GHz, the relative bandwidth is 32%, the maximum gain is 15dBi, and has the characteristics of wide bandwidth, simple design and low profile. It has a good application prospect in terahertz communication.