Title :
A wireless sensing platform utilizing ambient RF energy
Author :
Parks, A.N. ; Sample, A.P. ; Yi Zhao ; Smith, J.R.
Author_Institution :
Electr. Eng. Dept., Univ. of Washington, Seattle, WA, USA
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.
Keywords :
broadcast communication; cellular radio; energy harvesting; receiving antennas; television transmitters; wireless sensor networks; ambient RF energy harvesting sensor node; ambient RF-powered prototype; cellular base transceiver station; communication functionality; distance 10.4 km; onboard sensing; power 1 MW; power 15.8 muW; receive antenna; wireless sensing platform; Charge pumps; Energy harvesting; Radio frequency; Sensors; Temperature measurement; Wireless communication; Wireless sensor networks;
Conference_Titel :
Silicon Monolithic Integrated Circuits in RF Systems (SiRF), 2013 IEEE 13th Topical Meeting on
Conference_Location :
Austin, TX
Print_ISBN :
978-1-4673-1552-4
Electronic_ISBN :
978-1-4673-1551-7
DOI :
10.1109/SiRF.2013.6489489
