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

Published online by Cambridge University Press:  06 April 2016

Tiago Moura*
Affiliation:
Departamento de Electrónica, Instituto de Telecomunicações, Telecomunicações e Informática, Universidade de Aveiro, Aveiro, Portugal. Phone: +351 234 377 900
Nuno Borges de Carvalho
Affiliation:
Departamento de Electrónica, Instituto de Telecomunicações, Telecomunicações e Informática, Universidade de Aveiro, Aveiro, Portugal. Phone: +351 234 377 900
Pedro Pinho
Affiliation:
Departamento de Electrónica, Instituto de Telecomunicações, Telecomunicações e Informática, Universidade de Aveiro, Aveiro, Portugal. Phone: +351 234 377 900 Instituto Superior de Engenharia de Lisboa, Lisboa, Portugal
*
Corresponding author: T. Moura Email: [email protected]
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Abstract

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.

Type
Research Article
Copyright
Copyright © Cambridge University Press 2016 

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References

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