This paper presents the architecture and design trade-off of a compact, programmable, battery-less UHF-RFID sensor tag for environmental monitoring. The node is based on a single UHF monopole matched to a dual-path rectifier for both energy harvesting purposes and wake-up radio capabilities. The based-band circuit includes a power management unit (PMU) to supply the microcontroller unit which is in charge of implementing the EPC Gen 2 Class 1 standard protocol fully working with European ETSI compliant readers. The prototype was built with off-the-shelf components in a 95x31 mm2 PCB with low losses Rogers 4350B substrate. The proposed circuit can wake-up starting from a fully discharged state and operate at distances up to 9.70 m from a 2W ERP source in the UHF 865- 868 MHz frequency band, with a power sensitivity of -16 dBm, while performing temperature sensing and radio-frequency communication. If an on-board battery is added, the battery-assisted solution is able to work as far as 15 m from the interrogator reaching the highest sensitivity of -17.8 dBm while the energy harvesting circuits replenishing the battery

Long range battery-less UHF-RFID platform for sensor applications

Fabbri D.;Masotti D.;Costanzo A.;Dardari D.;Romani A.
2019

Abstract

This paper presents the architecture and design trade-off of a compact, programmable, battery-less UHF-RFID sensor tag for environmental monitoring. The node is based on a single UHF monopole matched to a dual-path rectifier for both energy harvesting purposes and wake-up radio capabilities. The based-band circuit includes a power management unit (PMU) to supply the microcontroller unit which is in charge of implementing the EPC Gen 2 Class 1 standard protocol fully working with European ETSI compliant readers. The prototype was built with off-the-shelf components in a 95x31 mm2 PCB with low losses Rogers 4350B substrate. The proposed circuit can wake-up starting from a fully discharged state and operate at distances up to 9.70 m from a 2W ERP source in the UHF 865- 868 MHz frequency band, with a power sensitivity of -16 dBm, while performing temperature sensing and radio-frequency communication. If an on-board battery is added, the battery-assisted solution is able to work as far as 15 m from the interrogator reaching the highest sensitivity of -17.8 dBm while the energy harvesting circuits replenishing the battery
2019
2019 IEEE International Conference on RFID Technology and Applications, RFID-TA 2019
80
85
Fabbri D.; Berthet-Bondet E.; Masotti D.; Costanzo A.; Dardari D.; Romani A.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/707927
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