A 1 V Wireless Transceiver for an Ultra-Low-Power SoC for Biotelemetry Applications Alan Chi Wai Wong, Ganesh Kathiresan, Chung Kei Thomas Chan, Omar Eljamaly, Okundu Omeni, Declan McDonagh, Alison J. Burdett, and

Abstract

This paper presents a 1 V RF transceiver for biotelemetry and wireless body sensor network (WBSN) applica- tions, realized as part of an ultra low power system-on-chip (SoC), the Sensium™. The transceiver utilizes FSK/GFSK modulation at a data rate of 50 kbit/s to provide wireless connectivity between target sensor nodes and a central base-station node in a single-hop star network topology operating in the 862–870 MHz European short-range-device (SRD) and the 902–928 MHz North American Industrial, Scientific & Medical (ISM) frequency bands. Con- trolled by a proprietary media access controller (MAC) which is hardware implemented on chip, the transceiver operates half-du- plex, achieving 102 dBm receiver input sensitivity (for 1E-3 raw bit error rate) and up to 7 dBm transmitter output power through a single antenna port. It consumes 2.1 mA during receive and up to 2.6 mA during transmit from a 0.9 to 1.5 V supply. It is fabricated in a 0.13 m CMOS technology and occupies 7 mm /50 in a SoC die size of 4 4m m/50.