Wide-Range Adaptive RF-to-DC Power Converter for UHF RFIDs

Mahmoud H. Ouda; Waleed Khalil; Khaled N. Salama

doi:10.1109/LMWC.2016.2586077

Wide-Range Adaptive RF-to-DC Power Converter for UHF RFIDs

Mahmoud H. Ouda, Waleed Khalil, Khaled N. Salama

Research output: Contribution to journal › Article › peer-review

55 Scopus citations

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 conven- tional, cross-coupled rectifiers without degrading sensitivity. A prototype is designed for UHF RFID applications, and is imple- mented using 0.18 μ m CMOS technology. On-chip measurements demonstrate a sensitivity of − 18 dBm for 1 V output over a 100 k Ω load and a peak RF-to-DC power conversion efficiency of 65%. A conventional, fully cross-coupled rectifier is fabricated along- side 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

Original language	English (US)
Pages (from-to)	634-636
Number of pages	3
Journal	IEEE Microwave and Wireless Components Letters
Volume	26
Issue number	8
DOIs	https://doi.org/10.1109/LMWC.2016.2586077
State	Published - Jul 27 2016

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01

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10.1109/LMWC.2016.2586077

https://repository.kaust.edu.sa/bitstream/10754/618021/1/07523314.pdf

Cite this

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AU - Khalil, Waleed

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Wide-Range Adaptive RF-to-DC Power Converter for UHF RFIDs

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