面向电磁场赋形的时间反演实现方法与设计  

Design of Time Reversal for Electromagnetic Field Shaping

作　　者：孔明昊 肖龙 吴雨 陈亮[1,2] KONG Minghao;XIAO Long;WU Yu;CHEN Liang(China Ship Development and Design Center,Wuhan 430064;Science and Technology on Electromagnetic Compatibility Laboratory,Wuhan 430064)

机构地区：[1]中国舰船研究设计中心,武汉430064 [2]电磁兼容性重点实验室,武汉430064

出　　处：《舰船电子工程》2023年第3期202-208,218,共8页Ship Electronic Engineering

摘　　要：时间反演电磁波具有良好的空时聚焦特性,可用于电磁场赋形。论文探究了啁啾变换方法、时间透镜方法、方向回溯方法和数字处理方法这几种时间反演的实现方法,进行了数值仿真与分析,并提出了一种面向电磁场赋形的时间反演异构设计。论文基于此设计构建了墙壁环境的信道模型,并基于时间反演完成了特定图案的电磁场赋形仿真。论文的工作对时间反演在无线传能、医学诊疗、工业加工、电磁干扰等领域的实际应用具有一定的参考意义。Time-reversal electromagnetic wave has good space-time focusing characteristics,and can be used for electromag⁃netic field shaping.In this paper,chirp transform method,time-lens method,retrodirective array method and digital signal process⁃ing method are discussed and analyzed.A heterogeneous design of time reversal for electromagnetic field shaping is proposed.Based on this design,the channel model of the wall environment is constructed,and the electromagnetic field shaping simulation of the specific pattern is completed based on time reversal.The work of this paper has certain reference significance for the practical appli⁃cation of time reversal in wireless power transmission,medical diagnosis and treatment,industrial processing,electromagnetic in⁃terference and other fields.

关 键 词：时间反演 电磁场赋形 啁啾变换 外插混频 

分 类 号：TP39[自动化与计算机技术—计算机应用技术]