ABSTRACT
Recent technology advances have made it conceivable to place wireless sensor networks in many applications. The wireless nodes of these networks will be comprised of a transducer (sensor or actuator), communications circuitry, and behavior logic. These nodes will be embedded in ceiling tiles, in factory equipment, in farmland, and on the battlefield, and will locate things, sense danger, and control the environment with minimal human effort. Crucial to the success of these ubiquitous networks is the availability of small, lightweight, low-cost nodes. Even more important, the nodes must consume ultra-low power to eliminate frequent battery replacement.
