Theoretical Energy-Conversion Efficiency for Energy-Harvesting Circuits Under Power-Optimized Waveform Excitation

被引：72

作者：

Valenta, Christopher R. ^{[1
]}

Morys, Marcin M. ^{[2
]}

Durgin, Gregory D. ^{[2
]}

机构：

[1] Georgia Tech Res Inst, Electroopt Syst Lab, Atlanta, GA 30332 USA

[2] Georgia Inst Technol, Dept Elect & Comp Engn, Atlanta, GA 30332 USA

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2015年 / 63卷 / 05期

关键词：

Energy harvesting; power-optimized waveforms (POWs); RF identification (RFID); wireless power transfer (WPT);

D O I：

10.1109/TMTT.2015.2417174

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：

Closed-form equations have been developed that calculate the maximum output power and energy-conversion efficiency for an energy-harvesting circuit under power-optimized waveform excitation. The theoretical model predicts how signals with high peak-to-average power ratios increase the output power available at low input powers and decrease the maximum energy-conversion efficiency at high input powers. The model shows agreement to within 0.7 dB with ideal simulated components. Additionally, the model provides a theoretical bound for a realized microwave energy-harvesting circuit prototyped at 5.8 GHz.

引用

页码：1758 / 1761

页数：4

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