FDD for Low Power Backscattering in Batteryless Sensor Nodes

Qaragoez, Yasser; Pollin, Sofie; Schreurs, Dominique

doi:10.23919/eumc50147.2022.9784258

Cited by 7 publications

(3 citation statements)

References 9 publications

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“…Passive communication using backscattering transponders has enabled a plethora of applications ranging from sensing [8], [10] to high data-rate communication [83]. The ultra-low power consumption of backscattering modulators, due to the lack of carrier generation or amplification leads to wide-scale adoption of backscattering in energy harvesting and energyconstrained systems [84]. With the evolution and foreseen rapid deployment of wearables, the adaptability of backscattering systems is increasingly important.…”

Section: ) Low-power Communication Backscattering and Software-define...mentioning

confidence: 99%

“…The signal can be decoded thanks to the nonlinear characteristics of the diode(s) in the energy harvesting part. Then, it is possible to interpret the information employing the same rectifying circuit without the need for a power-consuming local oscillator [84]. The battery-free sensor node contains BS module, energy harvesting, wake-up receiver, power management unit, and processor [96].…”

Section: ) Dynamic and Wearable Swipt Systemsmentioning

confidence: 99%

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Microwave-Enabled Wearables: Underpinning Technologies, Integration Platforms, and Next-Generation Roadmap

et al. 2023

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This paper presents a holistic and authoritative review of the role of microwave technologies in enabling a new generation of wearable devices. A human-centric Internet of Things (IoT) covering remote healthcare, distributed sensing, and consumer electronics, calls for high-performance wearable devices integrated into clothing, which require interdisciplinary research efforts to emerge. Microwaves, the "interconnect" of wireless networks, can enable, rather than solely connect, the next generation of autonomous, sustainable, and wearable-friendly electronics. First, enabling technologies including wireless power transmission and RF energy harvesting, backscattering and passive communication, RFID, and electromagnetic sensing are reviewed. We then discuss the key integration platforms, covering smart fabrics and electronic textiles, additive manufacturing, printed electronics, natively-flexible and organic RF semiconductors, and fully-integrated CMOS systems, where opportunities for hybrid integration are highlighted. The emerging This article has been accepted for inclusion in a future issue of this journal. Content is final as presented, with the exception of pagination. This article has been accepted for inclusion in a future issue of this journal. Content is final as presented, with the exception of pagination. This article has been accepted for inclusion in a future issue of this journal. Content is final as presented, with the exception of pagination. This article has been accepted for inclusion in a future issue of this journal. Content is final as presented, with the exception of pagination.

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Section: ) Low-power Communication Backscattering and Software-define...mentioning

confidence: 99%

Section: ) Dynamic and Wearable Swipt Systemsmentioning

confidence: 99%

Microwave-Enabled Wearables: Underpinning Technologies, Integration Platforms, and Next-Generation Roadmap

et al. 2023

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“…Furthermore, in the BackCom vision, communication is obtained by avoiding the implementation of most of the functional blocks in the transmitting/receiving chain (i.e., oscillators, mixers), reducing device complexity, and decreasing production costs [13,14]. Additionally, such node architectures usually involve EH and/or WPT to fully overcome the energy constraints and extend the battery life, as illustrated in [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Energy Efficient Enhancement in a 5.8 GHz Batteryless Node Suitable for Backscattering Communications

et al. 2023

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This work presents a compact batteryless node architecture suitable with the backscattering communication (BackCom) approach. The key functional blocks are demonstrated at 5.8 GHz, making use of commercially available components involving a DC/DC step-up converter, a 3.3 V data generator, and an ASK backscattering modulator based on a single GaAs HEMT in a cold-FET configuration. The node integrates a patch antenna exhibiting a non-50 Ω optimal port impedance; the value is defined by means of a source pull-based optimization technique aimed at maximizing the DC/DC input current supplied by the RF to DC converter. This approach maximizes the node compactness, as well as the wireless power conversion efficiency. A prototype was optimized for the −5 dBm power level at the input of the RF to DC converter. Under this measurement condition, the experimental results showed a 63% increase in the harvesting current, rising from 145 to 237 μA, compared to an identical configuration that used a microstrip matching network coupled with a typical 50-Ω patch antenna. In terms of harvested power, the achieved improvement was from −13.2 dBm to −10.9 dBm. The conversion efficiency in an operative condition improved from 15% to more than 25%. In this condition, the node is capable of charging a 100 μF to the operative voltage in about 27 s, and operating the backscattering for 360 ms with a backscattering modulation frequency of about 10 MHz.

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Integrated Dual-Mode Energy Harvesting for Self-Sustaining Sensor Nodes: Synergy of Solar and RF Energies

Qaragoez,

Pollin,

Schreurs

2024

2024 IEEE/MTT-S International Microwave Symposium - IMS 2024

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FDD for Low Power Backscattering in Batteryless Sensor Nodes

Cited by 7 publications

References 9 publications

Microwave-Enabled Wearables: Underpinning Technologies, Integration Platforms, and Next-Generation Roadmap

Microwave-Enabled Wearables: Underpinning Technologies, Integration Platforms, and Next-Generation Roadmap

Energy Efficient Enhancement in a 5.8 GHz Batteryless Node Suitable for Backscattering Communications

Integrated Dual-Mode Energy Harvesting for Self-Sustaining Sensor Nodes: Synergy of Solar and RF Energies

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