Title :
A 900MHz RFID reader chip with RC calibration
Author :
Shouxian, Mou ; Kaixue, Ma ; Seng, Yeo Kiat
Author_Institution :
Circuits & Syst. Div., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
An RFID scanner chip targeted to operation frequency range of 860MHz to 960MHz is designed and fabricated. To reduce chip performance degradation due to process and temperature variation, resistor and capacitor calibration is adopted. Resistor calibration output codes are used to adjust main circuit blocks´ biasing current. Capacitor calibration output codes are used to fine tune filter operating range and DAC conversion accuracy. The reader is implemented with a 90nm standard CMOS process and has a chip area around 3.1mm × 3.3mm. The chip is packaged with QFN48 and mounted on PCB. The proposed RFID reader consumes around 90mW power, which is possible to be integrated on a mobile phone or for other applications.
Keywords :
CMOS integrated circuits; calibration; capacitors; digital-analogue conversion; electronics packaging; printed circuits; radiofrequency identification; resistors; DAC conversion accuracy; PCB; RC calibration; RFID reader; RFID reader chip; RFID scanner chip; capacitor calibration output code; chip area; circuit block biasing current; fine tune filter operating range; frequency 900 MHz; mobile phone; performance degradation; resistor calibration output code; standard CMOS process; CMOS integrated circuits; Calibration; Capacitors; Radiofrequency identification; Resistors; System-on-a-chip; Voltage-controlled oscillators; CMOS; RC calibration; RFID; resistor calibration;
Conference_Titel :
Integrated Circuits (ISIC), 2011 13th International Symposium on
Conference_Location :
Singapore
Print_ISBN :
978-1-61284-863-1
DOI :
10.1109/ISICir.2011.6131894
