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An Energy-Efficient OOK Transceiver for Wireless Sensor Networks

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2 Author(s)
Daly, D.C. ; MIT, Cambridge, MA ; Chandrakasan, A.P.

A 1-Mb/s 916.5-MHz on-off keying (OOK) transceiver for short-range wireless sensor networks has been designed in a 0.18-mum CMOS process. The receiver has an envelope detection based architecture with a highly scalable RF front-end. Untuned RF circuits are leveraged and optimized in the receiver to achieve superior energy efficiency compared to tuned RF circuits. The receiver power consumption scales from 0.5 mW to 2.6 mW, with an associated sensitivity of -37 dBm to -65 dBm at a BER of 10 -3. The transmitter consumes 3.8 mW to 9.1 mW with output power from -11.4 dBm to -2.2 dBm. The receiver achieves a startup time of 2.5 mus, allowing for efficient duty cycling

Published in:

Solid-State Circuits, IEEE Journal of  (Volume:42 ,  Issue: 5 )