A dual-channel UHF passive CMOS RFID tag design

Author

Chia-Yu Yao ; Wei-Chun Hsia ; Yi-Hsin Ko

Author_Institution

Dept. of Electr. Eng., Nat. Taiwan Univ. of Sci. & Technol., Taipei, Taiwan

fYear

2012

fDate

4-7 Dec. 2012

Firstpage

1145

Lastpage

1147

Abstract

This paper presents a highly efficient 15-bit UHF passive radio-frequency-identification (RFID) tag chip. The tag operates at dual bands: 866.4 MHz/2.45 GHz or 925 MHz/2.45 GHz. The power-link uses low band (866.4 or 925 MHz) and the data-link uses high band (2.45 GHz). Neither a VCO nor a regulator is included in our design. A novel decoder circuit for the pulse-interval encoding (PIE) symbol is presented. The conversion efficiency of RF to dc power is around 30%. The lowest RF power that our tag can work is -21.86 dBm. Our RFID tag chip is implemented in TSMC 0.18 μm 1P6M CMOS technology. Its area is 0.958×0.931 mm².

Keywords

CMOS integrated circuits; codecs; integrated circuit design; radiofrequency identification; RFID tag chip; TSMC 1P6M CMOS technology; UHF passive radio-frequency-identification tag chip; conversion efficiency; data-link; decoder circuit; dual-channel UHF passive CMOS RFID tag design; frequency 2.45 GHz; frequency 866.4 MHz; frequency 925 MHz; power-link; pulse-interval encoding symbol; size 0.18 mum; word length 15 bit; CMOS integrated circuits; Charge pumps; Decoding; Passive RFID tags; Radio frequency; Regulators; VCO-less tag design; energy harvesting; passive RFID;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings (APMC), 2012 Asia-Pacific

Conference_Location

Kaohsiung

Print_ISBN

978-1-4577-1330-9

Electronic_ISBN

978-1-4577-1331-6

Type

conf

DOI

10.1109/APMC.2012.6421851

Filename

6421851