Multiband Ambient RF Energy Harvesting for Autonomous IoT Devices

This letter presents a novel multiband rectenna for the ambient wireless energy harvesting of an autonomous internet of thing (IoT) sensor. A bow-tie antenna with slits is proposed to obtain four frequency bands at 840 MHz, 1.86, 2.1, and 2.45 GHz, respectively. Furthermore, a multiband rectifying c...

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Bibliographic Details
Published inIEEE microwave and wireless components letters Vol. 30; no. 12; pp. 1189 - 1192
Main Authors Vu, Hong Son, Nguyen, Ngan, Ha-Van, Nam, Seo, Chulhun, Thuy Le, Minh
Format Journal Article
LanguageEnglish
Published IEEE 01.12.2020
Subjects
Antenna measurements
Bow-tie antenna
Energy harvesting
multiband rectenna
power management circuit
Power system management
Radio frequency
radio frequency energy harvesting (RF-EH)
Rectennas
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Summary:This letter presents a novel multiband rectenna for the ambient wireless energy harvesting of an autonomous internet of thing (IoT) sensor. A bow-tie antenna with slits is proposed to obtain four frequency bands at 840 MHz, 1.86, 2.1, and 2.45 GHz, respectively. Furthermore, a multiband rectifying circuit combined of four single ring-loop rectifiers is designed with high conversion efficiency. Finally, a power management circuit with storing and converting the harvested voltage is proposed for smoothing dc output voltage. The energy harvester can be used in practical wireless sensor applications.
ISSN:1531-1309
1558-1764
DOI:10.1109/LMWC.2020.3029869