Ultra-low power analog front-end for passive UHF RFID tags

Author

Shen, J.P. ; Wang, X.A. ; Liu, Siyuan ; Huang, Jhin Fang

Author_Institution

Key Lab. of Integrated Microsyst., Peking Univ., Shenzhen, China

fYear

2012

fDate

7-9 Dec. 2012

Firstpage

1

Lastpage

4

Abstract

This paper presents an ultra-low power analog front-end circuit for passive UHF RFID tags. To improve power conversion efficiency, Schottky barrier diode based rectifier is adopted. The design of an area-efficient ASK demodulator with a novel average generator is discussed in detail. Most of the analog blocks are designed to work under sub-1v to reduce power consumption. The analog front-end circuit is implemented in 0.18 μm CMOS process. Measurement results show that with a 110kΩ resistor load, the power conversion efficiency of the rectifier reaches as high as 33.6%. The total power consumption of the analog front-end circuit is only 2.4 μW.

Keywords

CMOS analogue integrated circuits; amplitude shift keying; energy consumption; power conversion; radiofrequency identification; rectifiers; resistors; CMOS process; Schottky barrier diode based rectifier; area-efficient modulator; passive UHF RFID tag; power consumption reduction; power conversion efficiency; resistor load; ultra-low power analog front-end circuit; RFID; demodulator; low power; rectifier;

fLanguage

English

Publisher

iet

Conference_Titel

Information Science and Control Engineering 2012 (ICISCE 2012), IET International Conference on

Conference_Location

Shenzhen

Electronic_ISBN

978-1-84919-641-3

Type

conf

DOI

10.1049/cp.2012.2369

Filename

6755748