Flexible and Wearable Hybrid RF and Solar Energy Harvesting System

Yu, Buyun; Wang, Zhehan; Ju, Lu; Zhang, Chao; Liu, Zhenguo; Tao, Li; Lu, Wei‐Bing

doi:10.1109/tap.2021.3118814

Cited by 37 publications

(20 citation statements)

References 22 publications

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“…Table 1 presents a comprehensive comparison of the solar cell performance between the present work and the published design. Simple stacking of solar cells and antennas limits the design integration, 1–5 whereas shading, that is, having less than 100% exposure to sunlight, decreases the solar cell utilization 3–5 . The use of the solar cell as the ground plane and its integration with the antenna improve the versatility of solar cells 6–11 .…”

Section: Resultsmentioning

confidence: 99%

“…To improve compatibility, additional filter circuits have been introduced, 13–17 which is contrary to the original intention of cost reduction and miniaturization. Based on the above discussion, the solar cell SPA with high gain and wideband has obvious advantages over previously proposed designs 1–22 …”

Section: Resultsmentioning

confidence: 99%

“…Simple stacking of solar cells and antennas limits the design integration, 1-5 whereas shading, that is, having less than 100% exposure to sunlight, decreases the solar cell utilization. [3][4][5] The use of the solar cell as the ground plane and its integration with the antenna improve the versatility of solar cells. [6][7][8][9][10][11] However, the upper layer components block the solar cells 6,10 (less than 100% solar cell exposure rate), and inconsistency between the radiation direction and the light-receiving direction 7 restricts the application of solar cell antennas.…”

Section: Discussionmentioning

confidence: 99%

“…Rapid development in optoelectronic devices has accelerated the integration of solar cells into wireless communication devices. In recent years, the codesign of antennas and solar cells has led to the development of smaller and lighter wireless communication devices with low power consumption and has gained considerable attention 1–22 …”

Section: Introductionmentioning

confidence: 99%

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A broadband and high‐gain differentially fed suspended plate antenna integrated with solar cells

Lai

Luo

Yan

et al. 2022

Micro & Optical Tech Letters

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This paper proposes a differentially fed suspended plate antenna (SPA) integrated with solar cells. A structure of hollow cylinders is used to support the patch and enhance the gain by suppressing any unwanted high-order mode. More importantly, the cathode of the solar cells is connected to the antenna ground to improve the compatibility of the antenna and solar cells without introducing additional filters. Differentially fed L-shaped coaxial probes feed the SPA to enhance the bandwidth. The anode and the cathode of the two solar cells are connected and located directly above the patch. A prototype of the solar cell SPA is fabricated and measured to verify the stability of its radiation and energy-harvesting performance. The measurement results show that the bandwidth of the proposed solar cell SPA is 3.2-5.1 GHz for wideband application, and its gain is higher than 9.51 dBi in the operating band.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A broadband and high‐gain differentially fed suspended plate antenna integrated with solar cells

Lai

Luo

Yan

et al. 2022

Micro & Optical Tech Letters

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“…The emergence of the internet of everything (IoE) as an evolution of the internet of things (IoT) promises the concept of smart management of the environment at homes, factories, and cities. The IoE provides the connection of people, sensors, and machines to the Internet, and so they can be considered as parts of the information network [1][2][3][4][5]. The implementation of the IoE requires extensive installation of sensors in the buildings to detect variations of the environment in terms of moisture, temperature, etc.…”

Section: Introductionmentioning

confidence: 99%

Printed Fractal Folded Coplanar-strips-fed Array Rectenna for IoE Applications

Badamchi¹,

Trinh²,

Bois³

et al. 2022

PIER C

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This paper presents a low-cost antenna integrable to a large set of indoor common building materials. Employing the printing technology on thin transparent polyethylene terephthalate material and using available building materials not only leads to a low-cost environmentally friendly solution for the expected massive sensor deployment but also eliminates the dispersive behavior of the materials that are interacting with them. A coplanar-strips fed fractal folded antenna element was designed and validated experimentally with four different materials including gypsum, plywood, and plexiglass. The aesthetically viable ground-free antenna achieves wideband performance and radiates in the broadside plane perpendicularly to the wall. The single antenna element covers the frequency band of 2.18-3.96 GHz with a gain of 1 dBi at 2.4 GHz. To take advantage of the large available surface, a high efficiency 2.4 GHz array rectenna for powering electronic devices intended for IoE technology is proposed. The proposed array rectenna has a dimension of 384 × 354 × 6.475 mm 3 and employs a single diode as the rectifier element. The measured results for the presented array rectenna reveal an AC-DC powerconversion-efficiency (PCE) of more than 20% for input powers as low as 0.025 µW/cm 2 with a peak PCE of 61.3% at 4.03 µW/cm 2 .

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Wearable All‐Fabric Hybrid Energy Harvester to Simultaneously Harvest Radiofrequency and Triboelectric Energy

Kou,

Zhang,

et al. 2024

Advanced Science

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Distributed micro‐energy harvesting devices offer the flexibility, sustainability, and multi‐scenario applicability that will be critical to wearable electronic products in the Internet of Things. The radiofrequency and triboelectric (RF‐TE) hybrid energy harvester (HEH) concept and prototype is presented for the first time, to simultaneously capture the energy from ambient electromagnetic waves and biological motions. The proposed hybrid energy harvesting system consists of a wearable rectenna, a triboelectric nanogenerator (TENG), and a power management circuit (PMC). Among them, the all‐fabric rectenna exhibits good impedance matching characteristics in the ISM frequency. The flexible TENG unit can generate a maximum power density of 0.024 µW cm−2. The designed multifunctional fabric‐based PMC can considerably enhance the controllability of harvested hybrid energy. Additionally, a normalizable fabric circuit board quasi surface mount technology (FCB‐SMT) is proposed to integrate all modules on the same fabric substrate in one step, making the entire system superior mechanical robustness. The proposed wearable fabric‐based RF‐TE hybrid energy harvester is capable of successfully driving consumer electronics (such as sensors, watches, etc.). It provides a new energy solution strategy for self‐powered wearable electronic devices and is anticipated to encourage the efficient utilization of renewable energy.

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Flexible and Wearable Hybrid RF and Solar Energy Harvesting System

Cited by 37 publications

References 22 publications

A broadband and high‐gain differentially fed suspended plate antenna integrated with solar cells

A broadband and high‐gain differentially fed suspended plate antenna integrated with solar cells

Printed Fractal Folded Coplanar-strips-fed Array Rectenna for IoE Applications

Wearable All‐Fabric Hybrid Energy Harvester to Simultaneously Harvest Radiofrequency and Triboelectric Energy

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