Title :
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
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;
Conference_Titel :
ASIC (ASICON), 2011 IEEE 9th International Conference on
Conference_Location :
Xiamen
Print_ISBN :
978-1-61284-192-2
Electronic_ISBN :
2162-7541
DOI :
10.1109/ASICON.2011.6157286
