期刊
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
卷 27, 期 5, 页码 521-523出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2017.2690853
关键词
Equivalent circuit model; optimal configuration; relay resonator; wireless power transfer (WPT)
资金
- Basic Science Research Program through the National Research Foundation of Korea - Ministry of Science, ICT & Future Planning [2015R1C1A1A01051747]
- National Research Foundation of Korea [2015R1C1A1A01051747] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
In this letter, the optimal placement of a transmitter is investigated under a given arrangement of a relay and a receiver for nonradiative wireless power transfer. Specifically, a closed-form equation is derived for the optimal coupling coefficient between the transmitter and the relay using an equivalent circuit model. Based on this theoretical analysis, it is found that the quality factor of the transmitter has a great effect on determining its optimal placement. In particular, the transmission efficiency can be improved by locating the resonator with a smaller quality factor (e.g., transmitter or receiver) closer to the relay. In order to support the validity of the analysis, the resonators, including the relay, receiver, and three different types of transmitters, are experimentally designed and fabricated. It is shown that our analytical results are well matched with the measured ones in various settings.
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