Wide-Range Adaptive RF-to-DC Power Converter for UHF RFIDs
Author(s)
Ouda, MH
Khalil, W
Salama, KN
Type
Journal Article
Abstract
A wide-range, differential, cross-coupled rectifier is proposed with an extended dynamic range of input RF power that enables wireless powering from varying distances. The proposed architecture mitigates the reverse-leakage problem in conventional, cross-coupled rectifiers without degrading sensitivity. A prototype is designed for UHF RFID applications, and is implemented using 0.18 μm CMOS technology. On-chip measurements demonstrate a sensitivity of -18 dBm for 1 V output over a 100 kΩ load and a peak RF-to-DC power conversion efficiency of 65%. A conventional, fully cross-coupled rectifier is fabricated alongside for comparison and the proposed rectifier shows more than 2× increase in dynamic range and a 25% boosting in output voltage than the conventional rectifier.
Date Issued
2016-07-27
Date Acceptance
2016-04-06
Citation
IEEE Microwave and Wireless Components Letters, 2016, 26, pp.634-636
ISSN
1531-1309
Publisher
Institute of Electrical and Electronics Engineers
Start Page
634
End Page
636
Journal / Book Title
IEEE Microwave and Wireless Components Letters
Volume
26
Subjects
Science & Technology
Technology
Engineering, Electrical & Electronic
Engineering
AC-DC converter
adaptive
CMOS
energy harvesting
rectifiers
RFID
self-bias
UHF
wireless powering
CMOS RECTIFIER
NETWORKS
0906 Electrical And Electronic Engineering
1005 Communications Technologies
0205 Optical Physics
Networking & Telecommunications
Publication Status
Published
OA Location
http://repository.kaust.edu.sa/kaust/handle/10754/618021
Article Number
8