Paper Info
Title
A 900 MHz RF energy harvesting system in 40 nm CMOS technology with efficiency peaking at 47% and higher than 30% over a 22dB wide input power range.
Abstract
A 900 MHz RF energy harvesting system is proposed for a far-field wireless power transfer application. The topology of a single-stage CMOS rectifier loaded with an integrated boost DC-DC converter is implemented in a 40 nm CMOS technology. The co-design of a cross-coupled CMOS rectifier and an impedance matching network is described to optimize RF-DC conversion efficiency for the target input power. Two tuning techniques are employed to improve the power conversion efficiency of the entire system over a wide input power range, which include using an input-regulated DC-DC converter to control the rectifier with an optimal output voltage, and tuning an impedance matching network to compensate the input impedance variation of the rectifier. The measurement results show the proposed system can achieve an end-to-end power conversion efficiency higher than 30% over a 22dB input power range (-10 to 12 dBm) with a peak value of 47% at 0 dBm for a 1.5 V output voltage. The maximum output voltage of the system is 2.45V with a sensitivity of -15 dBm.
Year
Venue
Keywords
2017
ESSCIRC 2017 - 43RD IEEE EUROPEAN SOLID STATE CIRCUITS CONFERENCE
RF energy harvesting (RFEH),far-field wireless power transfer (WPT),available input power,power conversion efficiency (PCE),cross-coupled CMOS rectifier,tunable matching network,input-regulated boost DC-DC converter
Field
DocType
Citations 
Energy conversion efficiency,Wireless power transfer,Rectifier,Computer science,Energy harvesting,Impedance matching,Power factor,CMOS,Control engineering,Electronic engineering,Input impedance
Conference
0
PageRank 
References 
Authors
0.34
8
6
Name
Order
Citations
PageRank
Jialue Wang100.34
Yang Jiang245.15
Johan Dijkhuis3144.80
Guido Dolmans442453.52
Hao Gao5178.67
Peter G. M. Baltus67420.38