Title :
A low-power RF front-end of passive UHF RFID transponders
Author :
Ma, Changming ; Xingjun Wu ; Zhang, Chun ; Wang, ZhiHua
Author_Institution :
Beijing Tsinghua Tongfang Microelectron., Co., Ltd., Beijing
fDate :
Nov. 30 2008-Dec. 3 2008
Abstract :
This paper presents in details the architecture and most of RF front-end building blocks of a fully integrated passive radio frequency identification (RFID) transponder operating at UHF 902 MHz to 928 MHz. A novel architecture for the transponder IC and a new low power on-off keying (OOK) demodulator are proposed in this paper. For realizing the system, a low power CMOS full-wave rectifier achieving a power conversion efficiency of 31.9% has been integrated in this transponder. Simulation results show that the global input power of front-end circuits is only about 21 muw in order to drive a load of 1.8 muA at the rectifier output and the power consumption of the proposed demodulator is less than 0.4 muw. The transponder is fabricated in a 0.18 mum mixed-mode CMOS technology and has the area of 0.70 mm2.
Keywords :
CMOS integrated circuits; demodulators; low-power electronics; microwave integrated circuits; mixed analogue-digital integrated circuits; passive networks; radiofrequency identification; transponders; RFID transponders; current 1.8 muA; frequency 902 MHz to 928 MHz; low power RF front end; mixed mode CMOS technology; on off keying demodulator; passive UHF; power consumption; rectifier output; CMOS technology; Circuit simulation; Demodulation; Energy consumption; Passive RFID tags; Power conversion; Radio frequency; Radiofrequency identification; Rectifiers; Transponders;
Conference_Titel :
Circuits and Systems, 2008. APCCAS 2008. IEEE Asia Pacific Conference on
Conference_Location :
Macao
Print_ISBN :
978-1-4244-2341-5
Electronic_ISBN :
978-1-4244-2342-2
DOI :
10.1109/APCCAS.2008.4745963
