【作者】 铁益恺； 张金玲； 昌敦宇； 董佳琦； 张晓娴；

【Author】 Tie Yi-kai;Zhang Jin-lin;Chang Dun-yu;Dong Jia-qi;Zhang Xiao-xian;School of Electronic Engineering, Beijing University of Posts and Telecommunications;

【机构】 北京邮电大学电子工程学院；

【摘要】 本文基于近场聚焦技术与电磁超表面波束调控,设计了工作在5.8GHz,能够实现对电磁波360°的精准相位控制及高效能量反射的超表面单元。通过几何光学理论分析,进一步确定了反射阵天线上任一单元所需的补偿相位,进而设计了一款由21×21个单元组成的无线能量传输反射阵列天线。仿真结果表明,该天线在0.5-3m范围内实现了波束聚焦,显著提高了电磁能量的集中度和传输效率。天线发射效率在3m处达到57.1%。更多还原

【Abstract】 This paper presents the design of a metasurface unit operating at 5.8GHz, capable of achieving precise 360° phase control and high-efficiency energy reflection of electromagnetic waves, based on near-field focusing technology and electromagnetic metasurface beam control. By analyzing the required compensation phase for any unit on the reflecting antenna array using geometric optics theory, a wireless energy transmission reflective array antenna composed of 21×21 units was designed. Simulation results show that the antenna achieves beam focusing within a range of 0.5 to 3 meters, significantly improving the concentration and transmission efficiency of electromagnetic energy. The antenna’s emission efficiency reaches 57.1% at a distance of 3 meters.更多还原