Dispenser Printed Flexible Rectenna for Dual-ISM Band High-Efficiency Supercapacitor Charging

Wagih, Mahmoud; Weddell, Alex S.; Beeby, Steve

doi:10.1109/wptc51349.2021.9458070

Cited by 6 publications

(4 citation statements)

References 14 publications

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“…2. Furthermore, this is in line with previous works which have harvested Frequency Modulated (FM) signals from handheld two-way radios in the near-field, sufficing a DC-DC power management circuit [16] and charging a supercapacitor [17].…”

Section: B Energy Harvesting and Storage From Packetssupporting

confidence: 89%

Battery-Free Wireless Node Powered using High-Efficiency Harvesting of 900 MHz GFSK-Modulated Packets with a Compact Rectenna

Wagih¹

2022

2022 Wireless Power Week (WPW)

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Radio Frequency (RF) Simultaneous Wireless Information and Power Transfer (SWIPT) has attracted significant interest with a range of SWIPT-specific rectenna implementations. However, the impact of modulated waveforms on a capacitor charging time remains unknown, and a system powered off packets us yet to be demonstrated. This paper presents an RF-powered sub-1 GHz sensor node through modulated packages with a sub-0 dBm sensitivity without any DC-DC power management circuitry. Using Gaussian Frequency Shift Keying (GFSK) modulated signals from a commercial IoT transceiver, the RF-DC power conversion efficiency (PCE) is investigated for both a resistive and capacitive load. It is shown that GFSK modulation with varying data rates has minimal influence on the PCE. A miniaturized rectenna is demonstrated charging a supercapacitor powering a sub-1 GHz sensor node for over 32 s, charged using 40 GFSK packets transmitted in 62 s, at 1.6 m from a 4 W circularly-polarized source at 900 MHz. The demonstrated rectenna exhibits over an order of magnitude improvement in the sensitivity over previous works harvesting modulated packets.

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Section: B Energy Harvesting and Storage From Packetssupporting

confidence: 89%

Battery-Free Wireless Node Powered using High-Efficiency Harvesting of 900 MHz GFSK-Modulated Packets with a Compact Rectenna

Wagih¹

2022

2022 Wireless Power Week (WPW)

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“…Wearable and flexible rectennas were not restricted to far-field operation, flexible and printed rectennas have been demonstrated harvesting up-link power in the near-field of phones [55] and two-way radios [22], [56]. In fact, an early spectral survey in a busy environment, i.e.…”

Section: ) Rectennas and Far-field Harvestingmentioning

confidence: 99%

“…Therefore, powering wearable rectennas from co-located high-power transmitters, e.g. phones, could be an alternative means of scavenging energy [22]; 5 s in close proximity with a transmitting 446 MHz (0.5 W) two-way radio was found to yield over 47 mJ [56].…”

Section: ) Rectennas and Far-field Harvestingmentioning

confidence: 99%

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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“…[ 319 ] In that research, an inductive loop feed was incorporated in the printed 2 GHz microstrip meshed antenna design, resulting in 72% highest rectenna PCE, with 82% theoretical transparency. In another work, [ 320 ] his team proposed a dual‐band antenna for power transfer in the 915 MHz band and energy harvesting from two‐way radio at 433 MHz. This rectenna charged a 6.8 mF supercapacitor without power management circuity, with 47.2% efficiency in 433 MHz and 33.3% efficiency in the 915 MHz Band.…”

Section: Printed Electronics Techniques Applications In Energy Harves...mentioning

confidence: 99%

Printed Electronics in Radiofrequency Energy Harvesters and Wireless Power Transfer Rectennas for IoT Applications

Skarżyński

Słoma

2023

Adv Elect Materials

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The Internet of Things is currently one of the fastest-growing branches in electronics. The development of energy storage systems and the miniaturization of dedicated printed circuit boards significantly influence that growth. However, the need for batteries and traditional printed circuit boards still limits devices' minimum size, weight, and cost, narrowing the application area. Energy harvesters and wireless power transfer systems fabricated with printed electronics can significantly reduce such devices' weight, size, and cost. Printed electronics technology provides scalable tools for many electronics applications, shortening the validation time and enabling new low-cost or disposable solutions on lightweight and flexible substrates embedded inside 3D printed structures and directly on device housings. Energy harvesting and wireless power transfer systems in electronic devices can provide enough power to minimize battery capacity and size or even eliminate the need for batteries in low-power applications. This review presents an adaptation of printed electronics technology in the fabrication of radio frequency energy harvesters and wireless power transfer rectennas for IoT applications. Last, perspectives for development towards greater integration with microsystems, transient electronics with ecofriendly materials, adaptation for next-generation telecommunication systems, and 3D structural electronics solutions are briefly discussed.

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Dispenser Printed Flexible Rectenna for Dual-ISM Band High-Efficiency Supercapacitor Charging

Cited by 6 publications

References 14 publications

Battery-Free Wireless Node Powered using High-Efficiency Harvesting of 900 MHz GFSK-Modulated Packets with a Compact Rectenna

Battery-Free Wireless Node Powered using High-Efficiency Harvesting of 900 MHz GFSK-Modulated Packets with a Compact Rectenna

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

Printed Electronics in Radiofrequency Energy Harvesters and Wireless Power Transfer Rectennas for IoT Applications

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