Abstract-An ambient RF energy harvesting sensor node with onboard sensing and communication functionality was developed and tested. The minimal RF input power required for sensor node operation was -18 dBm (15.8 µW). Using a 6 dBi receive antenna, the most sensitive RF harvester was shown to operate at a distance of 10.4 km from a 1 MW UHF television broadcast transmitter, and over 200 m from a cellular base transceiver station. A complete ambient RF-powered prototype was constructed which measured temperature and light level and wirelessly transmitted these measurements.
Parks et al. REF demonstrated a sensor node harvesting ambient RF energy from both digital TV and cellular radio waves that operates at a distance of 10.4 km from a 1 MW UHF television broadcast tower, and over 200 m from a cellular base transceiver station.
A wireless sensing platform utilizing ambient RF energy
2013 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems
2013 IEEE Topical Conference on Biomedical Wireless Technologies, Networks, and Sensing Systems
Computer Science