A multi-standard analog front-end circuit for 13.56MHz RFID reader
A multi-standard analog front-end architecture SoC(System on Chip)for 13.56MHz radio frequency is proposed.It consists of a transmitter and a receiver.The transmitter adjusts its ASK modulation index with a digitally controlled mode select register,thus supporting RFID standards of ISO/IEC 14443 Type A/B.In the receiver,an envelope detector,a variable gain amplifier and a shaping circuit are introduced.The envelope detector based on operational amplifier can even detector signals with a magnitude of only 100mV.Different gain and compare voltage can be achieved through the variable gain amplifier and shaping circuit which controlled by registers.The proposed analog front-end is implemented in SMIC 0.18um CMOS process at 1.8V single supply.The simulation results indicate the analog front-end satisfies the ISO/IEC 14443 Type A/B standards.The proposed circuit is suitable for RFID reader and NFC transceiver.
RFID Analog front-end circuit ISO/IEC 14443 Transceiver Multi-standard
Jiangxu Wu Jianguo Hu
School of Electronics and Information Technology,Sun Yat-Sen University Sun Yat-Sen University Guangzhou,China
国际会议
重庆
英文
355-359
2017-10-03（万方平台首次上网日期，不代表论文的发表时间）