Circuit Design Advances for Wireless Sensing Applications

Miniature wireless sensors with long lifetimes enable new applications for medical diagnosis, infrastructure monitoring, military surveillance, and environmental sensing among many other applications in a growing field. Sensor miniaturization leads to decreased on-sensor energy capacity, and lifetime requirements further constrain the sensor's power budget. To enable millimeter-scale wireless sensors with lifetimes of months to years, a new class of low-power circuit techniques is required. Wireless sensors collect and digitize environmental data before processing and transmitting the data wirelessly to base stations or other sensor nodes. Recent low-power advances for each of these functions shed light on how ubiquitous sensing can become a reality.

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