Microwave-band wireless power transfer system using ceramic dielectric resonators

Nishikawa, Kenta; Ishizaki, Toshio

doi:10.1109/wpt.2013.6556911

Cited by 4 publications

(1 citation statement)

References 5 publications

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“…These techniques are based on magnetic field induction between two coils placed in close proximity to each other [4]. In [5], ceramic dielectric resonators were used instead of conventional resonant coils to transfer power wirelessly. Ceramic dielectric resonators have very high unloaded Q factors; the resonators are typically covered with a metal surrounding to reduce the radiation loss [6].…”

Section: Introductionmentioning

confidence: 99%

A Retrodirective Array With Reduced Surface Waves for Wireless Power Transfer Applications

Fairouz¹,

Saed²

2014

PIER C

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A one-dimensional, dual frequency, active retrodirective array is proposed for wireless power transfer applications. Microstrip circular patch antennas with four shorting pins are used as array elements to suppress surface waves. The proposed design eliminates undesired coupling between array elements due to surface waves present in conventional microstrip antenna arrays in order to improve array performance. The antenna array uses circularly polarized microstrip elements with higher gain than conventional microstrip antennas. The proposed retrodirective array operates at 2.4 GHz for the interrogating signal and 5.8 GHz for the retransmitted signal, using up-converting mixers. The beam scanning inherent in retrodirective arrays ensures a constant power level available to the charging devices, regardless of their location within an angular sector over which retrodirectivity is achieved. A two-element experimental prototype provided uniform power density within a 60 • angular sector. The Design procedure, simulation results and experimental measurements are presented.

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Section: Introductionmentioning

confidence: 99%

A Retrodirective Array With Reduced Surface Waves for Wireless Power Transfer Applications

Fairouz¹,

Saed²

2014

PIER C

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Wireless power beam device using microwave power transfer

Ishizaki

Nishikawa

2014

2014 IEEE Wireless Power Transfer Conference

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A Comprehensive Review of Midrange Wireless Power Transfer Using Dielectric Resonators

Ali

Yasin

Ali

et al. 2021

International Journal of Antennas and Propagation

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Magnetic resonant coupling (MRC) is one of the techniques that are widely used in wireless power transfer (WPT) systems. The technique is commonly used for enhancing distance while maintaining power transfer efficiency (PTE). Many studies have investigated new technologies to extend the distance of MRC while maintaining high PTE values. The most promising technique to date in MRC is the addition of a resonator between the transmitter and the receiver coil. The implementation of the resonator varies based on different designs, sizes, and material types, although the outcomes remain unsatisfactory. By introducing dielectric material resonators, PTE can be improved by lowering the ohmic loss which becomes a problem on conventional resonators. This study presents a general overview on the use of dielectric material as a resonator in MRC WPT technology and its technological development. The basic operation of MRC WPT is summarized with up-to-date technical improvements related to dielectric material as a resonator in the field of WPT. An overview of the current limitations and challenges of this technique is also highlighted in this study.

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Microwave-band wireless power transfer system using ceramic dielectric resonators

Cited by 4 publications

References 5 publications

A Retrodirective Array With Reduced Surface Waves for Wireless Power Transfer Applications

A Retrodirective Array With Reduced Surface Waves for Wireless Power Transfer Applications

Wireless power beam device using microwave power transfer

A Comprehensive Review of Midrange Wireless Power Transfer Using Dielectric Resonators

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