Impulse-based scheme for crystal-less ULP radios

Authors:
Salvatore Drago;Fabio Sebastiano;Lucien J. Breems;Domine M. W. Leenaerts;Kofi A. A. Makinwa;Bram Nauta
Affiliations:
NXP Semiconductors, Eindhoven, The Netherlands;NXP Semiconductors, Eindhoven, The Netherlands;NXP Semiconductors, Eindhoven, The Netherlands;NXP Semiconductors, Eindhoven, The Netherlands;Electronic Instrumentation Laboratory, Delft University of Technology, Delft, The Netherlands;IC Design Group, CTIT Research Institute, University of Twente, Enschede, The Netherlands
Venue:
IEEE Transactions on Circuits and Systems Part I: Regular Papers - Special issue on ISCAS2008
Year:
2009

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Abstract

This study describes a method of implementing a fully integrated ultra-low-power (ULP) radio for wireless sensor networks (WSNs). This is achieved using an ad hoc modulation scheme (impulse radio), with a bandwidth of 17.7 MHz in the 2.4 GHz--ISM band and a specific medium access control (MAC) protocol, based on a duty-cycled wake-up radio and a crystal-less clock generator. It is shown that the total average power consumption is expected to be less than 100µW with a clock generator inaccuracy of only 1%.