Study on Cavity Resonator wireless power transfer to sensors in an enclosed space with scatterers

Takano, Ippei; Furusu, Daigo; Watanabe, Yasuyuki; Tamura, Masaya

doi:10.1109/icmim.2017.7918861

Cited by 9 publications

(2 citation statements)

References 4 publications

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“…Wireless power transmission in fully-enclosed space has been investigated by numerous researchers in recent years. Specifically, feasibility of supplying wireless power to sensors and tags in certain practical fully-enclosed environments such as spacecrafts [1], engine compartments [2], [3], and greenhouses [4] has been studied. Wireless power transmission in fully-enclosed space has also enabled powering devices implanted in animal bodies wirelessly in medical experiments [5]- [7].…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable Wireless Power Transmission in Fully-Enclosed Space Using Antenna Array

Wang

et al. 2019

IEEE Access

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This paper studies employing antenna array to reconfigure wireless power transmission in fully-enclosed space (that is, environments enclosed by conducting walls, such as spacecrafts and engine compartments). Because strong coupling may appear among array elements, conventional phased array is not the best approach. We find parasitic array, which includes one driver element and multiple parasitic elements, an excellent candidate to achieve high power transmission efficiency in fully-enclosed space. Phased array and parasitic array are analyzed and compared with each other; closed-form expressions of maximum power transmission efficiency are derived when the array includes two elements. With the theoretical analysis as guideline, some experiments are conducted in a cubic box with size of 1 cubic meter and with aluminum walls. Experimental results demonstrate that, parasitic array offers higher power transmission efficiency than phased array in most of the scenarios. To be more specific, the power transmission efficiency could always reach 90% when a parasitic array includes 4 elements (i.e., 1 driver element and 3 parasitic elements) and when the receiver changes its location in a 60 cm by 60 cm region. INDEX TERMS Antenna arrays, cavities, microwave propagation, reconfigurable antennas, wireless power transmission.

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Section: Introductionmentioning

confidence: 99%

Reconfigurable Wireless Power Transmission in Fully-Enclosed Space Using Antenna Array

Wang

et al. 2019

IEEE Access

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“…We propose cavity mode wireless power transfer in a fully closed space utilizing frequency selected surfaces [8,9]. In this case, the shielded space can work as a cavity resonator as shown in Fig.…”

Section: Determination Of Wpt Frequencymentioning

confidence: 99%

Waveguide-mode wireless power transfer in shielded space with aperture plane

Tamura

Watanabe

Takano

2017

IEICE Electron. Express

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This paper introduces a novel method of waveguide-mode wireless power transfer (WPT) in a shielded space with an aperture plane. First, it is shown that the simplified model of the engine compartment behaves as a ridge waveguide. Next, the WPT efficiency at the resonant frequency of the dominant mode in the ridge waveguide is discussed using a monopole probe and a helical probe. The results obtained from these simulations and measurements indicate a possibility that WPT efficiency can be improved by our method. Finally, it is experimentally demonstrated that the line-ofsight and non-line-of-sight wireless sensors can operate using our method.

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Wireless power transmission based on retro-reflective beamforming technique

Wang,

2024

Space Solar Power and Wireless Transmission

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Study on Cavity Resonator wireless power transfer to sensors in an enclosed space with scatterers

Cited by 9 publications

References 4 publications

Reconfigurable Wireless Power Transmission in Fully-Enclosed Space Using Antenna Array

Reconfigurable Wireless Power Transmission in Fully-Enclosed Space Using Antenna Array

Waveguide-mode wireless power transfer in shielded space with aperture plane

Wireless power transmission based on retro-reflective beamforming technique

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