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Journal Articles Microwave and Optical Technology Letters Year : 2019

A 900/1800 MHz dual-band high-efficiency rectenna

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Abstract

This article presents a high-efficiency dual-band rectenna, for RF energy harvesting in GSM bands (900-1800 MHz).The rectifier used is a dual-diode rectifier topology based on a Delon voltage doubler. To ensure, the highest efficiency as possible, source-pull simulations are used to determine the optimal diodes input impedance. The antenna is a spiral planar structure, where two slots ring resonators have been added to expand bandwidth at low frequencies without increasing its initial size. It is associated with a broadband balun to transform its impedance into the desired 50-Ω rectifier input impedance. The antenna and balun are sized for broadband operation to cover the main wireless communication bands. Measurement results show high RF-DC conversion efficiencies of 28% and 20% at 890 MHz and 1780 MHz, respectively,for a low RF input power of −20 dBm and with a 10 kΩ DC load. Efficiency reaches 43.5% with a dual-tone signal at −20 dBm.
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Dates and versions

hal-01988029 , version 1 (21-01-2019)

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Jérôme Tissier, Mohamed Latrach. A 900/1800 MHz dual-band high-efficiency rectenna. Microwave and Optical Technology Letters, 2019, 61 (5), pp.1278-1283. ⟨10.1002/mop.31704⟩. ⟨hal-01988029⟩
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