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http://dx.doi.org/10.5515/KJKIEES.2016.27.2.163

The Design of Resonator for Miniaturization of Magnetic Resonance Wireless Power Transfer System  

Kang, Seok Hyon (Graduate School of NID Fusion Technology, Seoul National University of Science and Technology)
Jung, Chang Won (Graduate School of NID Fusion Technology, Seoul National University of Science and Technology)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.27, no.2, 2016 , pp. 163-169 More about this Journal
Abstract
In this paper, we miniaturized the loop and coil in magnetic resonance wireless power transfer(MR-WPT) system for application to the small mobile device. The proposed disk type double coil resonator was designed to cause resonance at 6.87 MHz. It is composed of thin copper on both-side of acrylic substrate structured 2 mm width, 1 mm pitch and 8 turns. The outer radius of spiral coil pattern is 9 cm. And the proposed loop was made of the copper wire 5 mm diameter of cross-section. The size of loop is 10 cm diameter. For resonance at 6.87 MHz, the capacitor with 3,300 pF was connected in series on the loop. We rearranged the resonators and organized several WPT systems which is rearranged by resonators. The highest transfer efficiency of miniaturized WPT system was 35.67 %. This proposed design of spiral double coil will contribute to make resonator smaller for appling small and thin mobile device.
Keywords
Miniaturization; Magnetic Resonance; Small Mobile Application; Wireless Power Transfer; Resonator;
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