Optimal Wireless Power Transfer to Systems in an Enclosed Resonant Cavity

被引：19

作者：

Mei, Henry ^{[1
]}

Huang, Yu-Wen ^{[1
]}

Thackston, Kyle A. ^{[1
]}

Irazoqui, Pedro P. ^{[2
,3
]}

机构：

[1] Purdue Univ, Weldon Sch Biomed Engn, Ctr Implantable Devices, W Lafayette, IN 47907 USA

[2] Purdue Univ, Ctr Implantable Devices, W Lafayette, IN 47907 USA

[3] Purdue Univ, Sch Elect & Comp Engn, W Lafayette, IN 47907 USA

来源：

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS | 2016年 / 15卷

关键词：

Admittance inverter; bandpass filter; resonant cavity; wireless power transfer;

D O I：

10.1109/LAWP.2015.2490542

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This letter describes the development and implementation of an impedance-matching (IM) method for achieving optimal power transfer efficiencies (PTE's) in cavity resonator wireless power transfer (WPT) systems. Specifically, we develop a bandpass filter (BPF) circuit model and utilize network analysis to predict and realize maximum achievable PTE to miniature systems enclosed within a hollow metallic cylindrical cavity excited in TM010 resonant mode. Measured PTE results are demonstrated matching closely with the developed theory and circuit simulations. We achieve a peak PTE of 33% to a 5-mm-diameter receive coil that occupies a volume that is 5.23 x 10(6) times smaller than the volume of the cylindrical cavity. Our achieved PTE is 4 times larger than the PTE achieved to a system with no optimal IM network but only a single resonant capacitor connected in series with the receive coil. The model and results presented illustrate our optimal design methodology for realizing maximum achievable PTE in cavity resonator WPT systems.

引用

页码：1036 / 1039

页数：4

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