一种紧凑型高效率毫米波整流天线  

A compact efficient millimeter-wave rectenna

作　　者：岳震 胥鑫 李顺 林先其[1,2] 於阳 刘勇[2] YUE Zhen;XU Xin;LI Shun;LIN Xianqi;YU Yang;LIU Yong(University of Electronic Science and Technology of China,Yangtze River Delta Research Institute(Huzhou),Huzhou 313001,China;University of Electronic Science and Technology of China,Chengdu 611731,China)

机构地区：[1]电子科技大学长三角研究院(湖州),湖州313001 [2]电子科技大学电子科学与工程学院,成都611731

出　　处：《空间电子技术》2024年第3期56-61,共6页Space Electronic Technology

基　　金：浙江省科技计划项目(编号:2022C01093);国家自然科学基金(编号:62271122);中央高校基本科研项目(编号:ZYGX2021J008);电子科技大学长三角研究院(湖州)科研项目(编号:U03210007,U03210047,U05220004)。

摘　　要：为了提高毫米波无线输能系统的接收端效率,设计了一款基于缝隙耦合馈电的紧凑型高效率毫米波整流天线,该整流天线通过划分子阵,每个子阵单独进行能量转换,采用直流合成的方式进行整合输出,具有尺寸小、剖面低、易共形等特点。天线采用缝隙耦合馈电,馈线和辐射贴片分别在地板的两侧,有效的减少天线电路之间的影响,同时增大了天线的有效辐射面积。后端整流电路采用单二极管并联整流拓扑,利用扇形枝节作为直通滤波器进行直流滤波。该整流天线工作频率为35GHz,天线阵列增益为23.4dBi,实测在17dBm接收功率下具有最高58.65%的整流效率,可广泛应用于毫米波无线输能系统中。In order to improve the receiver efficiency of millimeter wave wireless power transmission system.In this paper,a compact high-efficiency millimeter-wave rectenna based on slot coupling feed is designed.The rectenna is divided by nine antenna subarrays,and each subarray is converted radio frequency power separately,and then the output is integrated by direct current synthesis,which has the characteristics of small size,low profile and easy conformal.The antenna is fed with slot coupling,and the feeder line and radiation patch are respectively on both sides of the floor,which can effectively reduce the influence between the antenna and rectifier,increases the effective radiation area of the antenna.The single diode parallel topology is adopted in back-end rectifier,the sector branch is used as the pass-through filter for direct current filtering.In 35GHz operating frequency,the array gain reaches 23.4dBi,and the rectifier has a maximum efficiency of 58.65%at 17dBm input power,which can be widely used in millimeter wave wireless power transfer systems.

关 键 词：整流天线 缝隙耦合 毫米波 高效率 

分 类 号：V443[航空宇航科学与技术—飞行器设计] TN253[电子电信—物理电子学]