An RF Energy Harvester With 44.1% PCE at Input Available Power of-12 dBm

被引：95

作者：

Hsieh, Ping-Hsuan ^{[1
]}

Chou, Chih-Hsien ^{[1
]}

Chiang, Tao ^{[2
]}

机构：

[1] Natl Tsing Hua Univ, Dept Elect Engn, Hsinchu 30013, Taiwan

[2] Natl Taiwan Univ, Grad Inst Elect Engn, Taipei 10617, Taiwan

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS | 2015年 / 62卷 / 06期

关键词：

DC-DC boost converter; energy harvesting; full-bridge differential rectifier; passively powered device; power conversion efficiency; radio-frequency energy harvesting; remotely powered device; wireless sensor network; wireless sensor node; INTERFACE CIRCUIT; CMOS RECTIFIER; SYSTEM;

D O I：

10.1109/TCSI.2015.2418834

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：

A 900-MHz radio-frequency energy harvester is designed and implemented for remotely powered devices. An efficient power path structure with adaptive control is proposed to maintain close-to-optimal power conversion efficiency. The control circuit consumes low power by adopting a novel open-loop asynchronous implementation and duty-cycled operation. A startup circuit is also presented. Measurement results show minimum input available power for startup of -17 dBm. With input available power of -12 dBm and load resistance of 144 k Omega, the measured output power is 27.8 mu W, giving an output voltage of 2 V. This corresponds to an end-to-end power conversion efficiency of 44.1%. The harvester consumes quiescent current of 1.56 mu A at output voltage of 2 V.

引用

页码：1528 / 1537

页数：10

共 28 条

[1]

Barnett Ray., 2007, ISSCC, P582

[2] A RF to DC Voltage Conversion Model for Multi-Stage Rectifiers in UHF RFID Transponders [J].