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1 results

  • High-efficiency D-TV energy harvesting system for low-input power

  • Tiago Moura, Nuno Borges de Carvalho, Pedro Pinho
  • Journal:
    Wireless Power Transfer / Volume 3 / Issue 1 / March 2016
    Published online by Cambridge University Press:
    06 April 2016, pp. 34-42
    Print publication:
    March 2016

  • In this work, a high-efficiency radio-frequency energy-harvesting system that takes use of the Portuguese Digital Television signal (750–758 MHz) to obtain DC power is proposed. To be useful, it is optimized to operate at low-power conditions. For the rectifier, three different solutions are presented: a single-series diode, a single-shunt diode, and a voltage-doubler configuration. The efficiency is similar for the three rectifiers – about 54% with a sine-wave excitation and −10.5 dBm of input power. Field measurements with the voltage-doubler have shown 63% efficiency for the same input power.