A 0.18 Um CMOS reconfigurable digital baseband transceiver with 2FSK for RFID

This paper presents a digital baseband transceiver in 0.18 um CMOS technology. The PHY layer of the baseband supports multi-rate 2FSK modulation and demodulation with fully digital way. The proposed demodulator reaches 10^-4 BER for 14dB SNR and 100Kbps. The 2FSK receiver sensitivity reaches -94dbm when PER is 10^-2. Using 0.18 um CMOS process, the demodulator occupies an active area of 0.19mm². The MAC layer is compatible with IEEE 802.15.4 protocol. The Protocol layer is processed by the MCU. The digital baseband is a part of SOC, which is multi-channel and multi-mode. And it works at 400 MHz or 2.4 GHz. This chip is mainly applied to short-range wireless communication system such as RFID or WBAN.