Multipart Compact Antenna for RF Energy Harvesting

Divakaran, Sleebi K; Krishna, Deepti Das; Nasimuddin, Nasimuddin; Antony, Joseph

doi:10.1109/apmc46564.2019.9038786

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…Energies 2023, 16, 5711 9 of 26 where P R represents the antenna received power, G R represents the receiving antenna gain, P T represents the transmitted power, G T represents the transmitting antenna gain, R represents separation distance between transmitting and receiving antenna, and λ 2 is the wavelength of the transmitting wave [54]. The path loss due to free space is given by Equation ( 4)…”

Section: Antenna Designmentioning

confidence: 99%

Harnessing Energy for Wearables: A Review of Radio Frequency Energy Harvesting Technologies

Nwalike,

Ibrahim,

Crawley

et al. 2023

Energies

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Wireless energy harvesting enables the conversion of ambient energy into electrical power for small wireless electronic devices. This technology offers numerous advantages, including availability, ease of implementation, wireless functionality, and cost-effectiveness. Radio frequency energy harvesting (RFEH) is a specific type of wireless energy harvesting that enables wireless power transfer by utilizing RF signals. RFEH holds immense potential for extending the lifespan of wireless sensors and wearable electronics that require low-power operation. However, despite significant advancements in RFEH technology for self-sustainable wearable devices, numerous challenges persist. This literature review focuses on three key areas: materials, antenna design, and power management, to delve into the research challenges of RFEH comprehensively. By providing an up-to-date review of research findings on RFEH, this review aims to shed light on the critical challenges, potential opportunities, and existing limitations. Moreover, it emphasizes the importance of further research and development in RFEH to advance its state-of-the-art and offer a vision for future trends in this technology.

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Section: Antenna Designmentioning

confidence: 99%

Harnessing Energy for Wearables: A Review of Radio Frequency Energy Harvesting Technologies

Nwalike,

Ibrahim,

Crawley

et al. 2023

Energies

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“…Regarding localization applications, a low-cost circularly polarized pentagonal patch-excited sectorized antenna is presented in [ 16 ], with a robust semi-spherical coverage. Moreover, in [ 17 ], a 3D compact antenna with six ports is used for RF energy harvesting systems, demonstrating that this type of antenna is suitable for IoT applications. Furthermore, the authors suggested that the rectifier circuit can be used in this scenario to power IoT devices by being excited by this 3D antenna.…”

Section: Introductionmentioning

confidence: 99%

3D Antenna Characterization for WPT Applications

Jordão

Pires

Belo

et al. 2021

Sensors

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The main goal of this paper is to present a three-dimensional (3D) antenna array to improve the performance of wireless power transmission (WPT) systems, as well as its characterization with over-the-air (OTA) multi-sine techniques. The 3D antenna consists of 15 antenna elements attached to an alternative 3D structure, allowing energy to be transmitted to all azimuth directions at different elevation angles without moving. The OTA multi-sine characterization technique was first utilized to identify issues in antenna arrays. However, in this work, the technique is used to identify which elements of the 3D antenna should operate to transmit the energy in a specific direction. Besides, the 3D antenna design description and its characterization are performed to authenticate its operation. Since 3D antennas are an advantage in WPT applications, the antenna is evaluated in a real WPT scenario to power an RF–DC converter, and experimental results are presented.

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