Far-Field RF-Powered Variable Duty Cycle Wireless Sensor Platform

Erez Falkenstein, Daniel Costinett, Regan Zane, Zoya Popovic
2011 IEEE Transactions on Circuits and Systems - II - Express Briefs  
This brief discusses a low-power wireless sensor based on commercial components for sensing and data transmission. The sensor is wirelessly powered from the far field through an integrated single or dual-polarization antenna, rectifier, and power management module. Since the unit is intended for mobile use, the variable available power is monitored, and the duty cycle for wireless data transmission adaptively adjusted through the use of a low-power microcontroller and a custom power management
more » ... m power management circuit. In sleep mode, the circuit consumes 1 µA at 2.5 V.
doi:10.1109/tcsii.2011.2173964 fatcat:vcdzvfsy2fhujpbkwpvxcu4ewe