Self-Biased Differential Rectifier with Enhanced Dynamic Range for Wireless Powering

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

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

A self-biased, cross-coupled, differential rectifier is proposed with enhanced power-conversion efficiency over an extended range of input power. A prototype is designed for UHF 433MHz RF power-harvesting applications and is implemented using 0.18μm CMOS technology. The proposed rectifier architecture is compared to the conventional cross-coupled rectifier. It demonstrates an improvement of more than 40% in the rectifier power conversion efficiency (PCE) and an input power range extension of more than 50% relative to the conventional crosscoupled rectifier. A sensitivity of -15.2dBm (30μW) input power for 1V output voltage and a peak power-conversion efficiency of 65% are achieved for a 50kω load. © 2004-2012 IEEE.
Original languageEnglish (US)
Pages (from-to)515-519
Number of pages5
JournalIEEE Transactions on Circuits and Systems II: Express Briefs
Volume64
Issue number5
DOIs
StatePublished - Aug 29 2016

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