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

fYear

2008

fDate

Nov. 30 2008-Dec. 3 2008

Firstpage

73

Lastpage

76

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/APCCAS.2008.4745963

Filename

4745963