Scavenging Microwave Wireless Power:A Unified Model,Rectenna Design Automation,and Cutting-Edge Techniques  

作　　者：Si-Ping Gao Jun-Hui Ou Xiuyin Zhang Yongxin Guo 

机构地区：[1]Department of Electrical and Computer Engineering,National University of Singapore,Singapore 117576,Singapore [2]School of Electronic and Information Engineering,South China University of Technology,Guangzhou 510641,China [3]School of Future Technology,South China University of Technology,Guangzhou 511442,China

出　　处：《Engineering》2023年第11期32-48,共17页工程（英文）

基　　金：supported by the Singapore Ministry of Education Academic Research Fund Tier 1。

摘　　要：While sufficient review articles exist on inductive short-range wireless power transfer(WPT),long-haul microwave WPT(MWPT)for solar power satellites,and ambient microwave wireless energy harvesting(MWEH)in urban areas,few studies focus on the fundamental modeling and related design automation of receiver systems.This article reviews the development of MWPT and MWEH receivers,with a focus on rectenna design automation.A novel rectifier model capable of accurately modeling the rectification process under both high and low input power is presented.The model reveals the theoretical boundary of radio frequency-to-direct current(dc)power conversion efficiency and,most importantly,enables an automated system design.The automated rectenna design flow is sequential,with the minimal engagement of iterative optimization.It covers the design automation of every module(i.e.,rectifiers,matching circuits,antennae,and dc–dc converters).Scaling-up of the technique to large rectenna arrays is also possible,where the challenges in array partitioning and power combining are briefly discussed.In addition,several cutting-edge rectenna techniques for MWPT and MWEH are reviewed,including the dynamic range extension technique,the harmonics-based retro-directive technique,and the simultaneous wireless information and power transfer technique,which can be good complements to the presented automated design methodology.

关 键 词：Microwave wireless power transfer Microwave wireless energy harvesting Unified Rectifier model Automated rectenna design Emerging rectenna techniques 

分 类 号：TN92[电子电信—通信与信息系统]