面向无线传能的磁耦合通信射频链路解耦设计
Decoupling Design of Magnetic Coupling Communication RF Link for Wireless Power Transfer System
谢孟 1向乾尹 2魏清新 1邓红梅 2杜娟 1马红波2
作者信息
- 1. 北京机电工程研究所,北京 100074
- 2. 西南交通大学信息科学与技术学院,四川成都 611756
- 折叠
摘要
针对磁耦合无线能量数据协同传输中传能链路与通信链路的解耦需求,在采用 DD型通信线圈与传能线圈实现空域解耦的基础上,开展了滤波网络与线圈的协同设计,提升了通信链路通带阻抗匹配特性和带外抑制能力,并进一步引入带阻滤波网络,增强了与传能线圈的频域解耦.在耦合距离为 30 mm时,搭建了与 167 kHz无线传能天线共口径的磁耦合通信天线与滤波馈电网络硬件,在中心频率 14.8 MHz实现了 4 MHz的-3 dB通带带宽,该解耦天线系统相比 DD线圈天线对传能信号提高了 85 dB的抑制能力.
Abstract
To meet the decoupling requirements of the power transmission link and communication link in the wireless power and data simultaneous transmission system,based on the spatial decoupling of DD communication coil and power transmission coil,the integrated design of filtering feeding network and coil antenna is carried out,which improves the passband impedance matching characteristics and out of band suppression ability of the communication link,and further introduces the bandstop filter network to enhance the frequency domain decoupling with power transmission coil.When the coupling distance is 30 mm,the hardware of magnetic coupling communication filtering feeding antenna with the same aperture as 167 kHz wireless power transmission coil antenna is built,and the-3 dB passband bandwidth of 4 MHz is realized at the center frequency of 14.8 MHz.Compared with DD coil antenna,the decoupling antenna system improves the suppression ability of wireless power transmission signal by 85 dB.
关键词
磁耦合/无线数电同传/解耦/DD线圈Key words
magnetic coupling/wireless power and data simultaneous transmission/decoupling/DD coil引用本文复制引用
基金项目
国家自然科学基金面上项目(61771408)
四川省自然科学基金面上项目(2022NSFSC0566)
出版年
2024
国家科技期刊平台
NSTL
维普
万方数据