A high-efficient energy harvest chain for ultra-low power passive UHF RFID tags

Lin Ke,Wang Bo,Wang Xin'an,Hou Jiali,Wang Chaoxun,Zhang Xing

Proceedings - 2014 IEEE 12th International Conference on Solid-State and Integrated Circuit Technology, ICSICT 2014（2014）

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摘要

This paper presents a high-efficient energy harvest chain for ultra-low power passive UHF RFID tags. In this design, a high-efficiency differential-drive CMOS rectifier is adopted, a novel voltage limiter is used to provide a stable limiting voltage against temperature and process variation, and a voltage reference using peaking current source together with a high performance regulator with dynamic tail current source are utilized to meet the low-power low-voltage requirement. Measurement results show that the total current dissipation of our proposed energy harvest chain is less than 2.25μA with a peak power conversion efficiency (PCE) of 51.34%@ -10dBm. This high-efficient energy harvest chain is designed and implemented in TSMC 0.18 μm CMOS process with an area of 290μm×140μm. © 2014 IEEE.

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关键词

CMOS integrated circuits,energy harvesting,integrated circuit reliability,low-power electronics,radiofrequency identification,rectifying circuits,reference circuits,telecommunication power management,TSMC CMOS process,differential drive CMOS rectifier,high efficient energy harvesting chain,limiting voltage,process variation,size 0.18 mum,size 140 mum,size 290 mum,temperature variation,ultra low power passive UHF RFID tags,voltage reference,

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