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Integration of Wireless Coil and Bluetooth Antenna for High Charging and Radiation Efficiencies
Wong, Sai-Wai1; Sun, Guang-Hua2,3; Zhu, Lei4; Chen, Zhi Ning5; Chu, Qing-Xin6
2018-07
Source PublicationIEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY
ISSN2156-3950
Volume8Issue:7Pages:1292-1299
Abstract

In this paper, a wireless charging coil integrated with a Bluetooth antenna is proposed. The equivalent circuit model is developed to analyze this multifunctional coil. The outermost turn of the coil is appropriately designed in order to improve the radiation efficiency of the antenna. In this way, the radiation frequency of the coil is determined by the length of the outermost coil. Meanwhile, the inductance of the coil is adjusted to achieve high charging efficiency. When the coil is taken as a Bluetooth antenna, the measured reflection coefficient has achieved a fractional bandwidth of 8.3%, covering a frequency range of 2.3-2.5 GHz, with vertical bar S-11 vertical bar < -10 dB. The measured radiation efficiency of the antenna is about 62% at 2.4 GHz. When the coil is applied, the system charging efficiency is about 61%. In particular, the entire circuit module is fabricated on the low-cost FR4 printed circuit board. It can be expected that both the radiation and charging efficiencies can further be improved by using low-loss substrate.

KeywordBluetooth Antenna Multifunctional Coil Wireless Charging
DOI10.1109/TCPMT.2018.2790000
URLView the original
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Manufacturing ; Engineering, Electrical & Electronic ; Materials Science, Multidisciplinary
WOS IDWOS:000438909700019
PublisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
The Source to ArticleWOS
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Document TypeJournal article
CollectionDEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING
Affiliation1.College of Information Engineering, Shenzhen University, Shenzhen 518060, China
2.State Key Laboratory of Millimeter Waves, Department of Electronic Engineering, City University of Hong Kong, Hong Kong
3.Shenzhen Key Lab of MWWC, Shenzhen Research Institute, City University of Hong Kong, Shenzhen 518057, China
4.Department of Electrical and Computer Engineering, Faculty of Science and Technology, University of Macau, Macau 999078, China.
5.Electrical and Computer Engineering Department, National University of Singapore, Singapore 117583
6.School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510640, China
Recommended Citation
GB/T 7714
Wong, Sai-Wai,Sun, Guang-Hua,Zhu, Lei,et al. Integration of Wireless Coil and Bluetooth Antenna for High Charging and Radiation Efficiencies[J]. IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY,2018,8(7):1292-1299.
APA Wong, Sai-Wai,Sun, Guang-Hua,Zhu, Lei,Chen, Zhi Ning,&Chu, Qing-Xin.(2018).Integration of Wireless Coil and Bluetooth Antenna for High Charging and Radiation Efficiencies.IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY,8(7),1292-1299.
MLA Wong, Sai-Wai,et al."Integration of Wireless Coil and Bluetooth Antenna for High Charging and Radiation Efficiencies".IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY 8.7(2018):1292-1299.
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