Title :
Analysis, design and implementation of semi-passive Gen2 tag
Author :
Che, Wenyi ; Yang, Yuqing ; Xu, Conghui ; Yan, Na ; Tan, Xi ; Li, Qiang ; Min, Hao ; Tan, Jie
Author_Institution :
State Key Lab. of ASIC & Syst., Fudan Univ., Shanghai
Abstract :
An EPCglobal Gen2 compatible semi-passive (or be called battery-assisted passive) tag is proposed. The transmission link is studied to optimize power distribution in a backscatter RFID system. For long read range consideration, design targets for low power tag are given. The tag chip is implemented in SMIC 0.18 mum standard CMOS technology. A high efficiency AC-DC charge pump serves as a rectifier. A low power wake-up circuit detects the input energy level and controls a button cell battery to supply the chip. The equivalent tag power is 230 nW by measurement.
Keywords :
CMOS integrated circuits; charge pump circuits; radiofrequency identification; radiofrequency integrated circuits; telecommunication power supplies; AC-DC charge pump; backscatter RFID system; cell battery; input energy level; low power wake-up circuit; power 230 nW; power distribution optimisation; semipassive Gen2 RFID tag; size 0.18 mum; standard CMOS technology; transmission link; Backscatter; Battery charge measurement; CMOS technology; Charge pumps; Circuits; Energy states; Power distribution; Power measurement; Radiofrequency identification; Rectifiers; Semi-passive tag; low power; power conversion efficiency; read range;
Conference_Titel :
RFID, 2009 IEEE International Conference on
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4244-3337-7
Electronic_ISBN :
978-1-4244-3338-4
DOI :
10.1109/RFID.2009.4911208
