A Supply-Rail-Coupled eTextiles Transceiver for Body-Area Networks

作者：Mercier Patrick P^*; Chandrakasan Anantha P

来源：IEEE Journal of Solid-State Circuits, 2011, 46(6): 1284-1295.

DOI：10.1109/JSSC.2011.2120690

• BAN
• body-area networks
• conductive fabrics
• electronic textiles
• eTexiltes
• PAN
• personal area networks
• power line communication
• supply-rail coupled
• transceiver

This paper presents a transceiver that communicates over electronic textiles as an alternative, energy-efficient communication medium for body-area network (BAN) applications. The proposed eTextiles network architecture consists of a two-wire conductive yarn medium, body-worn nodes, and a basestation used for data collection and medium-access control. Fabricated in 0.18 mu m CMOS technology, the eTextiles transceiver employs supply-rail-coupled differential signaling to efficiently time-share the eTextiles medium between communication and remote charging activities. Remote charging achieves up to 96% power transfer efficiency when a basestation battery is used to charge remote ultra capacitors, which are used as the power supplies of body-worn nodes. Operating at 0.9 V and at 10 Mb/s, the receiver and transmitter front-ends together consume 3.2 pJ/bit over 1 m, which is at least 20X more efficient than conventional BAN receiver front-ends. The transceiver also contains an integrated digital baseband and medium access controller, which, together with the receiver front-end, consume 110 mu W during continuous operation.

• 出版日期2011-6