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

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

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 present...

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Veröffentlicht in:Wireless power transfer 2016-03, Vol.3 (1), p.34-42
Hauptverfasser: Moura, Tiago, de Carvalho, Nuno Borges, Pinho, Pedro
Format: Artikel
Sprache:eng
Schlagworte:
Digital broadcasting
Energy
Radio frequency
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Beschreibung
Zusammenfassung: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.
ISSN:2052-8418
2052-8418
DOI:10.1017/wpt.2015.22