A design of NFC analog front-end with the frequency selector

Abstract

We have designed the NFC analog front-end including the frequency selector using 0.18μm CMOS Process. The NFC analog front-end satisfied the ISO/IEC-14443A/B. It consists of the power supply block and the data transmitter block. The power supply block has the DC rectifier, voltage multiplier, bandgap reference, and regulator. The data transmitter block has the demodulator and the load modulator. The frequency selector distinguishes NFC signal which satisfies the ISO/IEC- 14443A standard and the wireless power transfer signal which satisfies Rezence standard. If the frequency selector receives the frequency signal of 6.78MHz, output becomes 1V. If the frequency selector receives the frequency signal of 13.56MHz, output becomes 0V and the data transmitter block of NFC analog front-end is turned on. © 2016 IEEE.