Short-Distance Wireless Power Transfer Based on Microwave Radiation via an Electromagnetic Rectifying Surface

Duan, Xin; Zhou, Lin; Zhou, Yonghong; Tang, Yuzhu; Chen, Xing

doi:10.1109/lawp.2020.3032854

Cited by 10 publications

(2 citation statements)

References 22 publications

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“…Still, the frequency range of its band and the energy capacity are significantly different, while the MW-WPT can even realize the wireless transmission of MW-level energy. MW-WPT and US-WPT transmissions are radiant, so a large portion of the power is dissipated by radiation during transmission and cannot be captured by the receiving side, resulting in extremely low transmission efficiency [ 70 ]. With the improved antenna technology, directional antennas can already achieve directional MW-WPT [ 71 ].…”

Section: History Theory and Applications Of Wptmentioning

confidence: 99%

Modern Advances in Magnetic Materials of Wireless Power Transfer Systems: A Review and New Perspectives

et al. 2022

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The magnetic coupling resonant wireless power transfer (MCR-WPT) system is considered to be the most promising wireless power transfer (WPT) method because of its considerable transmission power, high transmission efficiency, and acceptable transmission distance. For achieving magnetic concentration, magnetic cores made of magnetic materials are usually added to MCR-WPT systems to enhance the coupling performance. However, with the rapid progress of WPT technology, the traditional magnetic materials gradually become the bottleneck that restricts the system power density enhancement. In order to meet the electromagnetic characteristics requirements of WPT systems, high-performance Mn-Zn and Ni-Zn ferrites, amorphous, nanocrystalline, and metamaterials have been developed rapidly in recent years. This paper introduces an extensive review of the magnetic materials of WPT systems, concluding with the state-of-the-art WPT technology and the development and application of high-performance magnetic materials. In addition, this study offers an exclusive reference to researchers and engineers who are interested in learning about the technology and highlights critical issues to be addressed. Finally, the potential challenges and opportunities of WPT magnetic materials are presented, and the future development directions of the technology are foreseen and discussed.

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Section: History Theory and Applications Of Wptmentioning

confidence: 99%

Modern Advances in Magnetic Materials of Wireless Power Transfer Systems: A Review and New Perspectives

et al. 2022

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“…In particular, mid-range applications made in the radiative near-field or far-field region have gained significant attention. The traditional WPT operating in the VHF band has focused on a non-radiative near-field region, and the use of high-frequency applications in recent years permits the use of WPT systems realized in a radiative near-field region, which are known as “radiative mid-range” [ 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 ]. The mid-range applications allow the device to communicate through using the radiation characteristics of two antennas.…”

Section: Introductionmentioning

confidence: 99%

Revisiting the Analysis of Radiative Mid-Range Wireless Link for Pacemakers

Kim

Choi

Lee

2022

Sensors

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The development of a wireless link for biomedical applications requires an accurate estimation of the delivered power to implanted devices. In particular, a variety of mid-range applications in the biomedical area have gained significant attention. An appropriate method for the mid-range wireless link is required to implement a continuous wireless link through human tissue. Even though formulas used in this work are all based on previous works, this paper presents an implementation of the diverse formulas for the mid-range wireless link of an implanted antenna used for a pacemaker system based on the understanding on radiation properties varied with the distances from the antenna. The formulas based on input far-field data are successfully applied to compute the power transmission for the implanted devices, whose range includes radiative near-field and far-field regions. The wireless link for a pacemaker system is evaluated through using a patch antenna immersed with different depths of human tissue. A comparison of the computed and measured results shows an excellent agreement where the validity of the evaluation is demonstrated.

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Topology optimization of metamaterial microstructure for wireless power transfer with high power transmission efficiency

Shi

Qin

Cao

et al. 2021

Journal of Magnetism and Magnetic Materials

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Short-Distance Wireless Power Transfer Based on Microwave Radiation via an Electromagnetic Rectifying Surface

Cited by 10 publications

References 22 publications

Modern Advances in Magnetic Materials of Wireless Power Transfer Systems: A Review and New Perspectives

Modern Advances in Magnetic Materials of Wireless Power Transfer Systems: A Review and New Perspectives

Revisiting the Analysis of Radiative Mid-Range Wireless Link for Pacemakers

Topology optimization of metamaterial microstructure for wireless power transfer with high power transmission efficiency

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