Wireless Ambient Radio Power

  • Alanson P. Sample
  • Aaron N. Parks
  • Scott Southwood
  • Joshua R. Smith


Radio frequency (RF) signals provide a near ubiquitous energy source due to the large number of TV, radio, cellular, and Wi-Fi transmitters throughout our urban environments. While the traditional use of RF signals is for data transfer, it is possible to harvest, convert, and store the energy in these signals for use in a variety of applications. In general, the energy harvesting process includes four stages: excitation of current in an antenna by an incident electromagnetic wave, recti?cation of the resulting power at the antenna output, conversion of this power to optimal voltage and current levels, and ?nally, energy storage in a capacitor or battery for later use. This chapter describes a sensor node that is powered by UHF television broadcast signals. The sensor node transmits the measured data wirelessly over a short distance using a IEEE 802.15.4 radio. Typically broadcast television signals are considered to be sources of information, but this chapter demonstrates that these ubiquitous ambient signals can be used as a power source to do non-trivial work.


Sensor Node Radio Frequency Capacitor Bank Wireless Sensor Node Transmission Tower 
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  1. 1.
    S. Ahson and M. Ilyas. RFID handbook: applications, technology, security, and privacy. Boca Raton: CRC Press, 2008.CrossRefGoogle Scholar
  2. 2.
    W.C. Brown. The history of power transmission by radio waves. IEEE Transactions on Microwave Theory and Techniques, 32(9):1230–1242, Sep 1984.CrossRefGoogle Scholar
  3. 3.
    J.O. McSpadden and J.C. Mankins. Space solar power programs and microwave wireless power transmission technology. IEEE Microwave Magazine, 3(4):46–57, Dec 2002.CrossRefGoogle Scholar
  4. 4.
    A. Sample and J.R. Smith. Experimental results with two wireless power transfer systems. In 2009 IEEE Radio and Wireless Conference. (RAWCON 2009), pages 16–18, jan. 2009.Google Scholar
  5. 5.
    A.P. Sample, D.J. Yeager, P.S. Powledge, A.V. Mamishev, and J.R. Smith. Design of an RFID-based battery-free programmable sensing platform. IEEE Transactions on Instrumentation and Measurement, 57(11):2608–2615, Nov. 2008.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Alanson P. Sample
    • 1
  • Aaron N. Parks
    • 2
  • Scott Southwood
    • 3
  • Joshua R. Smith
    • 1
  1. 1.Department of Computer Science and Engineering and Department of Electrical EngineeringUniversity of WashingtonSeattleUSA
  2. 2.Department of Electrical EngineeringUniversity of WashingtonSeattleUSA
  3. 3.Department of Computer Science and EngineeringUniversity of WashingtonSeattleUSA

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