一种超宽带能量收集整流天线设计  

Design of an ultra-wideband energy harvesting rectifier antenna

作　　者：薛亮 白雪[1] 徐雷钧[1] Xue Liang;Bai Xue;Xu Leijun(College of Electrical Engineering,Jiangsu University,Zhenjiang 212013,China)

机构地区：[1]江苏大学电气信息工程学院,江苏镇江212013

出　　处：《电子技术应用》2022年第2期96-100,共5页Application of Electronic Technique

摘　　要：为了更好地利用空间无线电波RF能量,设计了一款覆盖谐振频率为1~14 GHz宽带天线,并针对2.4 GHz进行整流天线设计。天线主体为一个圆形贴片,在地面通过开圆形槽的方式,改变辐射单元表面电流强度,实现宽带谐振和增强辐射的作用。天线在2.4 GHz处为最佳谐振点,此频段对应的最大增益为6.26 dBi。为了使整流天线小型化,将匹配整流电路与收集天线一体化设计。经过测试:整流天线在2.4 GHz时最大转换效率为56.76%,对应的最大输出直流电压为2.61 V。In order to make better use of RF energy of space radio waves,a broadband antenna covering resonant frequency from 1 to 14 GHz is designed,and a rectified antenna is designed for 2.4 GHz.The main part of the antenna is a circular patch.By opening a circular slot on the ground,the surface current intensity of the radiation unit is changed to achieve broadband resonance and enhance radiation.The antenna is the best resonant point at 2.4 GHz,and the maximum gain corresponding to this frequency band is 6.26 dBi.In order to miniaturize the rectifier antenna,the matching rectifier circuit and the collecting antenna are integrated.After testing:the maximum conversion efficiency of the rectifier antenna at 2.4 GHz is 56.76%,and the corresponding maximum output DC voltage is 2.61 V.

关 键 词：能量收集 整流效率 宽带整流天线 

分 类 号：TN710[电子电信—电路与系统]