基于时间反演的局域空间多目标均匀恒定长时无线输能  

Uniform and constant long-time wireless power transmission of multi-targets in local space based on time reversal

作　　者：张知原 李冰 刘仕奇[3] 张洪林 胡斌杰[4] 赵德双[5] 王楚楠[1] Zhang Zhi-Yuan;Li Bing;Liu Shi-Qi;Zhang Hong-Lin;Hu Bin-Jie;Zhao De-Shuang;Wang Chu-Nan(School of Electrical Engineering,Southwest Jiaotong University,Chengdu 611756,China;State Key Laboratory of Millimeter Waves,Southeast University,Nanjing 210096,China;College of Electronics and Information Engineering,Shenzhen University,Shenzhen 518060,China;School of Electronic and Information Engineering,South China University of Technology,Guangzhou 510641,China;School of Physics,University of Electronic Science and Technology of China,Chengdu 610054,China)

机构地区：[1]西南交通大学电气工程学院,成都611756 [2]东南大学,毫米波国家重点实验室,南京210096 [3]深圳大学电子与信息工程学院,深圳518060 [4]华南理工大学电子与信息学院,广州510641 [5]电子科技大学物理学院,成都610054

出　　处：《物理学报》2022年第1期83-93,共11页Acta Physica Sinica

基　　金：毫米波国家重点实验室开放课题(批准号:K202235);国家自然科学基金(批准号:61871193);广东省自然科学基金重点项目(批准号:2018B030311049);四川省应用基础研究项目(批准号:19YYJC0025)资助的课题。

摘　　要：在局域有限空间中,如何保证电磁能量的多目标精准均匀恒定无线传输是亟待解决的科学难题.本文针对此难题,以具有时空聚焦特性的时间反演技术为基础,提出一种自动区域选择信道匹配的恒定均匀无线输能方法.该方法不仅能够依据多径信号的贡献率,自适应性地补偿不同目标处的信道差异,还可以利用距离系数动态划分时间反演镜阵元的工作范围,降低不同目标间的相互影响.在提高能量聚焦精度的同时,解决微波无线输能(microwave power transmission,MPT)中多目标能量非均匀传输的问题,从而实现长时间恒定的多目标均匀MPT.The precise,uniform and constant wireless transmission of electromagnetic power to multiple targets in a local finite space is a scientific problem to be solved urgently.Aiming at this problem,in this paper we propose an automatic zone selection channel matching method based on time reversal technique which has the spatiotemporal focusing characteristics.The proposed method can not only adaptively compensate for the channel differences at different targets based on the contribution rate of the multipath signals,but also dynamically divide the working range of the time reversal mirror elements to eliminate the mutual influences between different targets through the use of the distance coefficient.While improving the accuracy of energy focusing,the proposed method also solves the problem that non-uniform microwave power transmission(MPT)of multiple targets,and therefore achieving the constant,uniform and long-time MPT of multi-targets.

关 键 词：时间反演镜 自动区域选择信道匹配 微波输能 均匀输能 

分 类 号：TM724[电气工程—电力系统及自动化]