Basic Analysis of Two-Coils Structure Based on Magnetically-Coupled Resonant Technology for SWIPT Application

MA Biyun; CHEN Boheng; LI Sumei; WANG Yide; WEI Gang

doi:10.1049/cje.2015.10.031

Volume 24 Issue 4

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Article Navigation > Chinese Journal of Electronics > 2015 > 24(4): 852-856

MA Biyun, CHEN Boheng, LI Sumei, et al., “Basic Analysis of Two-Coils Structure Based on Magnetically-Coupled Resonant Technology for SWIPT Application,” Chinese Journal of Electronics, vol. 24, no. 4, pp. 852-856, 2015, doi: 10.1049/cje.2015.10.031

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MA Biyun, CHEN Boheng, LI Sumei, et al., “Basic Analysis of Two-Coils Structure Based on Magnetically-Coupled Resonant Technology for SWIPT Application,” Chinese Journal of Electronics, vol. 24, no. 4, pp. 852-856, 2015, doi: 10.1049/cje.2015.10.031

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Basic Analysis of Two-Coils Structure Based on Magnetically-Coupled Resonant Technology for SWIPT Application

doi: 10.1049/cje.2015.10.031

1.
School of Electronic and Information, South China University of Technology, Guangzhou 510641, China;
2.
IETR UMR 6164, Polytech Nantes, University of Nantes, Nantes 44306, France

Funds: This work is supported by the National Natural Science Foundation of China (No.61327005, No.61401158, No.61302056), the National Engineering Technology Research Center for Mobile Ultrasonic Detection (No.2013FU125X02), and the Guangdong Provincial Key Laboratory of Short-Range Wireless Detection and Communication (No.2010A060801002).

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Corresponding author: CHEN Boheng (corresponding author)was born in 1989. He received theB.S. degree from Guilin University of electronictechnology in 2012. He is currentlypursuing the Ph.D degree in South ChinaUniversity of technology. His research interestsinclude circuit design, signal processingand pattern recognition. (Email:eechenboheng@sina.com)
Received Date: 2015-02-05
Rev Recd Date: 2015-05-26
Publish Date: 2015-10-10

Abstract

Abstract

The Magnetically-coupled resonant (MCR) technology is exploited in this paper to realize Synchronous wireless information and power transfer (SWIPT) function, which means that the power carriers also transmit information. The circuit structure of SWIPT system is analyzed and the existence of two optimal frequencies in power efficiency under small resistance circumstance is proved. The physical parameters having influences on the two optimal frequencies are discussed, such as the distance between coils, impedance characteristics of coils and loads. These results provide a way to increase the bandwidth of MCR technology, while maintaining high power efficiency to realize SWIPT function. Simulations and experimental results are presented to verify the feasibility of the proposed system and obtained theoretical expressions.

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References(17)

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