Design and implementation of an analog front-end circuit for semi-passive HF RFID tag

Author

Zou Xuecheng ; Lin Huan ; Lin Hui ; Liu Dongsheng ; Guo Liang ; Yao Ke

Author_Institution

Sch. of Opt. & Electron. Inf., Huazhong Univ. of Sci. & Technol., Wuhan, China

fYear

2014

fDate

1-3 June 2014

Firstpage

389

Lastpage

392

Abstract

This paper presents an analog front-end circuit for semi-passive HF RFID tag compatible to ISO/IEC 14443 Type A. System architecture is constructed. The proposed AFE has realized much longer recognition distance than passive tags and can work normally when the magnetic field is 0.3 A/m. It was fabricated with HHNEC 0.13 μm 1P4M CMOS technology with its layout area of 416 μm×472 μm. Measurement results show that this AFE can successfully demodulate the 100% ASK modulated signal and the index of the subcarrier modulation can achieve as high as 16.4%. Its power consumption is as low as 129.6 μW. This chip met the demands of an HF semi-passive tag and made it possible to implant the temperature sensor in the tag.

Keywords

CMOS analogue integrated circuits; IEC standards; ISO standards; radiofrequency identification; ASK modulated signal; HHNEC 1P4M CMOS technology; ISO-IEC 14443 type A; analog front-end circuit; magnetic field; power 129.6 muW; recognition distance; semipassive HF RFID tag; size 0.13 mum; subcarrier modulation; system architecture; temperature sensor; Batteries; Capacitance; Demodulation; Radiofrequency identification; Rectifiers; Temperature sensors; AFE; HF RFID; Semi-passive; Wake-up;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits Symposium, 2014 IEEE

Conference_Location

Tampa, FL

ISSN

1529-2517

Print_ISBN

978-1-4799-3862-9

Type

conf

DOI

10.1109/RFIC.2014.6851749

Filename

6851749