UHF RFID front-end with magnetic sensor

Author

Zhou, Sheng-Hua ; Wu, Nan-Jian

Author_Institution

Inst. of Semicond., Chinese Acad. of Sci., Beijing

fYear

2006

fDate

23-26 Oct. 2006

Firstpage

554

Lastpage

556

Abstract

A passive UHF RFID tag RF front-end with a low power CMOS magnetic sensor is presented in this paper. The front-end consists of a rectifier, a regulator, a modem, a clock generator and a magnetic sensor. The front-end is compatible with EPC Gen2 and its operating frequency range is 800~1000-MHz. The magnetic field sensitive device is magnetic MOSFET. The magnetic sensor is composed of a magnetic MOSFET mirror, an amplifier, a voltage-current converter and a current control oscillator. The front-end is implemented in a mixed signal 1p4m 0.35mum CMOS technology. The lowest RF input power is -14dBm. The sensitivity of the sensor is 12%/mT, the lowest resolution is 1mT and the measuring range is plusmn50mT. The lowest dc power consumption of the sensor is only 0.5muA at 1.3V supply voltage

Keywords

UHF devices; magnetic mirrors; magnetic sensors; radiofrequency identification; 0.35 micron; 0.5 muA; CMOS technology; UHF RFID front-end; amplifier; clock generator; current control oscillator; dc power consumption; low power CMOS magnetic sensor; magnetic MOSFET mirror; modem; rectifier; regulator; voltage-current converter; CMOS technology; Clocks; MOSFET circuits; Magnetic sensors; Modems; Passive RFID tags; Radio frequency; Radiofrequency identification; Rectifiers; Regulators;

fLanguage

English

Publisher

ieee

Conference_Titel

Solid-State and Integrated Circuit Technology, 2006. ICSICT '06. 8th International Conference on

Conference_Location

Shanghai

Print_ISBN

1-4244-0160-7

Electronic_ISBN

1-4244-0161-5

Type

conf

DOI

10.1109/ICSICT.2006.306351

Filename

4098164