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

fYear

2009

fDate

27-28 April 2009

Firstpage

15

Lastpage

19

Abstract

An EPC_global 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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/RFID.2009.4911208

Filename

4911208