On the Convex Properties of Wireless Power Transfer With Nonlinear Energy Harvesting

被引:16
|
作者
Hu, Yulin [1 ]
Yuan, Xiaopeng [1 ]
Yang, Tianyu [2 ]
Clerckx, Bruno [3 ]
Schmeink, Anke [1 ]
机构
[1] Rhein Westfal TH Aachen, ISEK Res Area, D-52074 Aachen, Germany
[2] TU Berlin, Commun & Informat Theory Grp CommIT, D-10587 Berlin, Germany
[3] Imperial Coll London, Dept Elect & Elect Engn, South Kensington Campus, London SW7 2AZ, England
基金
英国工程与自然科学研究理事会;
关键词
Convex property; nonlinear energy harvesting; RF-to-DC conversion; wireless power transfer; WAVE-FORM DESIGN; RESOURCE-ALLOCATION; TRAJECTORY DESIGN; INFORMATION; NETWORKS;
D O I
10.1109/TVT.2020.2980683
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
The convex property of a nonlinear wireless power transfer (WPT) is characterized in this work. Following a nonlinear energy harvesting model, we express the relationship between the harvested direct current (DC) power and the power of the received radio-frequency signal via an implicit function, based on which the convex property is further proved. In particular, for a predefined rectifier's input signal distribution, we show that the harvested DC power of the nonlinear model is convex in the reciprocal of the rectifier's input signal power. Finally, we provide an example to show the advantages of applying the convex property in WPT network designs.
引用
收藏
页码:5672 / 5676
页数:5
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