上海大学学报(自然科学版) ›› 2014, Vol. 20 ›› Issue (5): 541-549.doi: 10.3969/j.issn.1007-2861.2014.04.003

• 特稿 • 上一篇    下一篇

微波无线输能技术研究进展与系统设计

杨雪霞, 周华伟, 周永金, 梅欢   

  1. 上海大学特种光纤与光接入网省部共建重点实验室, 上海200072
  • 收稿日期:2014-09-22 出版日期:2014-10-30 发布日期:2014-10-30
  • 通讯作者: 杨雪霞(1969—), 女, 教授, 博士生导师, 博士, 研究方向为微带天线、微波输能和计算电磁学. E-mail:xxyang@staff.shu.edu.cn
  • 基金资助:

    国家自然科学基金资助项目(61271062); 上海市特种光纤与光接入网重点实验室开放课题(SKLSF02013-03)

Research Progress in Microwave Wireless Power Transmission Technologies and System Efficiency Evaluation

YANG Xue-xia, ZHOU Hua-wei, ZHOU Yong-jin, MEI Huan   

  1. Key Laboratory of Specialty Fiber Optics and Optical Access Networks, Shanghai University, Shanghai 200072, China
  • Received:2014-09-22 Online:2014-10-30 Published:2014-10-30

摘要: 微波无线输能(microwave wireless power transmission, MPT)技术应用于不易获取直流电能的场合, 是研制太阳能卫星、近空间飞行器的关键技术, 也可应用于无线传感器网络节点供能及环境低微微波能量的回收. 比较了微带线型和共面带状线型2种典型整流天线的单元和阵列性能, 提出了对接收天线和整流电路的要求; 以获得最大微波波束捕获效率为目标, 分析了发射天线拓扑结构及高斯削尖口径电平分布. 在研究以上关键技术的基础上设计了一套C波段微波输能系统, 该系统从发射端到接收端的直流-直流效率为35%. 最后指出了微波无线输能技术存在的问题和未来发展方向.

关键词: 天线, 微波无线输能, 整流电路, 整流天线, 转换效率

Abstract: Microwave wireless power transmission (MPT) are the key technology of solar power satellite and aircraft in near space, it could also be applied in charging the wireless sensors and harvesting the ambient electromagnetic power. After comparing the microstrip and coplanar waveguide rectenna element and arrays, the demands on receiving antennas and rectifying circuits are summarized. The topological models and truncated Gauss aperture level distribution of the transmitting antenna are analyzed to obtain the maximum microwave beam capture efficiency. Based on above key technique, a C-band MPT system is designed and 35% dc-dc (direct current-direct current) efficiency is evaluated. The remaining problems and the development of MPT technology are discussed at the end.

Key words: antenna, conversion efficiency, microwave wireless power transmission (MPT), rectenna, rectifying circuit

中图分类号: