An ultra low power ASK demodulator for passive UHF RFID tag

Author

Zong, Hongqiang ; Shen, Jinpeng ; Liu, Shan ; Jiang, Mei ; Ban, Qingyuan ; Tang, Ling ; Meng, Fanyu ; Wang, Xin´an

Author_Institution

Shenzhen Grad. Sch., Key Lab. of Integrated Microsyst., Peking Univ., Beijing, China

fYear

2011

fDate

25-28 Oct. 2011

Firstpage

637

Lastpage

640

Abstract

In this paper, an Amplitude Shift Keying (ASK) demodulator circuit for passive UHF Radio Frequency Identification (RFID) tag is designed with ultra low power. Full chip area of the tag is 0.38mm²@0.18μm CMOS process (without test pads) and consumes only 4.28μW. As a significant module of the tag, the proposed ASK demodulator is powered by on-chip power of only 0.95V and consumes ultra small average current of 0.23μA for typical 300mV RF input voltage. Meanwhile, the demodulator can also be powered from external pad, in which way the supply voltage can be as low as 0.5V with 0.21μA current consumption.

Keywords

CMOS integrated circuits; UHF integrated circuits; amplitude shift keying; low-power electronics; radiofrequency identification; CMOS process; amplitude shift keying; current 0.21 muA; current 0.23 muA; passive UHF RFID tag; power 4.28 muW; radio frequency identification; size 0.18 micron; ultra low power ASK demodulator; voltage 0.5 V; voltage 0.95 V; voltage 300 mV; Amplitude shift keying; Current measurement; Demodulation; Hysteresis; Power measurement; Radio frequency; Radiofrequency identification; Amplitude Shift Keying; RFID; demodulator; low power; tag; transponder;

fLanguage

English

Publisher

ieee

Conference_Titel

ASIC (ASICON), 2011 IEEE 9th International Conference on

Conference_Location

Xiamen

ISSN

2162-7541

Print_ISBN

978-1-61284-192-2

Electronic_ISBN

2162-7541

Type

conf

DOI

10.1109/ASICON.2011.6157286

Filename

6157286