Title :
UHF RFID front-end with magnetic sensor
Author :
Zhou, Sheng-Hua ; Wu, Nan-Jian
Author_Institution :
Inst. of Semicond., Chinese Acad. of Sci., Beijing
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;
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
DOI :
10.1109/ICSICT.2006.306351
