论文信息 - A wireless sensing platform utilizing ambient RF energy

A wireless sensing platform utilizing ambient RF energy

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.

Yi Zhao | Alanson P. Sample | Joshua R. Smith | Aaron N. Parks

[1] Joshua R. Smith,et al. Experimental results with two wireless power transfer systems , 2009, 2009 IEEE Radio and Wireless Symposium.

[2] Alanson P. Sample,et al. Design of an RFID-Based Battery-Free Programmable Sensing Platform , 2008, IEEE Transactions on Instrumentation and Measurement.

[3] P.H. Chou,et al. Efficient Charging of Supercapacitors for Extended Lifetime of Wireless Sensor Nodes , 2008, IEEE Transactions on Power Electronics.

[4] K. Mayaram,et al. Efficient Far-Field Radio Frequency Energy Harvesting for Passively Powered Sensor Networks , 2008, IEEE Journal of Solid-State Circuits.

[5] Yoshihiro Kawahara,et al. Prototype implementation of ambient RF energy harvesting wireless sensor networks , 2010, 2010 IEEE Sensors.