A Stage-Stage Dead-Band Compensated Multiband RF Energy Harvester for Sensor Nodes

Dutta, Asudeb (2023) A Stage-Stage Dead-Band Compensated Multiband RF Energy Harvester for Sensor Nodes. IEEE Sensors Journal, 23 (5). pp. 4940-4950. ISSN 1530-437X

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This article presents a dead-band compensated multiband stacked electromagnetic energy harvester for powering sensor nodes. It is adaptive for typical ambient radio frequency (RF) power levels found within the environment. A stage-stage feedforward technique is adopted in the proposed harvester to enhance the output voltage, in turn, harvested power and sensitivity. Moreover, a compensation circuit is included in the design for bypassing the inactive bands to avoid unexcited band rectifier diodes. A prototype is designed to cover four frequency bands GSM (900 and 1800 MHz), 4G-LTE (2.3 GHz), and Wi-Fi (2.4 GHz) and further integrated with a TI BQ25570 power converter. The analytical, simulated, and measured results show the increment in the output voltage with the frequency bands. The measured efficiency of the RF-to-dc converter is 44.2% at -20-dBm input power and 89% at 0 dBm. The efficiency is improved by 13% on average under dead-band compensation. With the multiband stacking, the harvester achieves a start-up voltage of 320 mV at -24 dBm and is found to be efficient to drive a temperature sensor STLM20 at -12-dBm input power.

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IITH Creators:
IITH CreatorsORCiD
Dutta, Asudebhttps://orcid.org/0000-0003-3883-2083
Item Type: Article
Uncontrolled Keywords: Dead band; impedance matching network; multiband; power management; radio frequency (RF) energy harvesting; rectifier; Electric rectifiers; Electromagnetic waves; Impedance matching (electric); Power management; Rectifying circuits; Sensor nodes; Energy harvesting; Deadbands; Energy Harvester; Impedance-matching network; Multi band; Output voltages; Radiofrequencies; Rectifier; RF energy harvesting; Stackings; Wide-band
Subjects: Electrical Engineering
Electrical Engineering > Instruments and Instrumentation
Divisions: Department of Electrical Engineering
Depositing User: Mr Nigam Prasad Bisoyi
Date Deposited: 27 Aug 2023 09:39
Last Modified: 27 Aug 2023 09:39
URI: http://raiith.iith.ac.in/id/eprint/11635
Publisher URL: https://doi.org/10.1109/JSEN.2023.3237544
OA policy: https://v2.sherpa.ac.uk/id/publication/3570
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