Novel design of a compact tunable dual band wireless power transfer(TDB-WPT)system for multiple WPT applications  

作　　者：Hany A.ATALLAH Rasha Hussein AHMED Adel B.ABDEL-RAHMAN 

机构地区：[1]Department of Communications and Electronics,Faculty of Engineering,South Valley University,Qena 83523,Egypt [2]Egypt-Japan University of Science and Technology,Alexandria 21934,Egypt

出　　处：《Frontiers of Information Technology & Electronic Engineering》2024年第4期616-628,共13页信息与电子工程前沿（英文版）

摘　　要：In this study we present the design and realization of a tunable dual band wireless power transfer(TDB-WPT)coupled resonator system.The frequency response of the tunable band can be controlled using a surface-mounted varactor.The transmitter(Tx)and the receiver(Rx)circuits are symmetric.The top layer contains a feed line with an impedance of 50Ω.Two identical half rings defected ground structures(HR-DGSs)are loaded on the bottom using a varactor diode.We propose a solution for restricted WPT systems working at a single band application according to the operating frequency.The effects of geometry,orientation,relative distance,and misalignments on the coupling coefficients were studied.To validate the simulation results,the proposed TDB-WPT system was fabricated and tested.The system occupied a space of 40 mm×40 mm.It can deliver power to the receiver with an average coupling efficiency of 98%at the tuned band from 817 to 1018 MHz and an efficiency of 95%at a fixed band of 1.6 GHz at a significant transmission distance of 22 mm.The results of the measurements accorded well with those of an equivalent model and the simulation.

关 键 词：Defected ground structure(DGS) Surface-mounted Tunable dual band wireless power transfer(TDB-WPT) VARACTOR 

分 类 号：TM724[电气工程—电力系统及自动化]