Fully Integrated Energy Harvesting Circuit With −25-dBm Sensitivity Using Transformer Matching
Authors:
- 5 January 2015
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Circuits and Systems II: Express Briefs
- Vol. 62 (5) , 446-450
Abstract
This brief presents a circuit to harvest energy from radio-frequency electromagnetic waves. It has a front-end transformer that simultaneously matches the harvesting circuit to a standard 50-Ω antenna and provides voltage gain, reducing the “dead-zone” of an 18-stage rectifier. The circuit is designed and prototyped in a standard 130-nm CMOS process with an active area of 200 × 250 μm 2 . Experimental results show a sensitivity of -25 dBm (-22 dBm without transformer) at 1.3 GHz.Keywords
Funding Information
- FCT, Fundação para a Ciência e a Tecnologia (PEst-OE/EEI/LA0021/2013, DISRUPTIVE EXCL/EEI-ELC/0261/2012, SFRH/BD/79075/2011)
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