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http://dx.doi.org/10.5515/KJKIEES.2009.20.8.753

A Planar Spiral Antenna of Multi-Tabs for Wireless Power Transmission of Inductive Coupling  

Kim, Jin-Wook (Dept. of Power Electrical Equipment Information and Communication Eng., Univ. of Science & Tech.(UST))
Son, Hyeon-Chang (Division of Electrical Eng. and Computer Science, Hanyang University)
Jeong, Seung-Ho (Division of Electrical Eng. and Computer Science, Hanyang University)
Kim, Seung-Gyun (Division of Electrical Eng. and Computer Science, Hanyang University)
Kim, Kwan-Ho (KERI)
Park, Young-Jin (KERI)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.20, no.8, 2009 , pp. 753-760 More about this Journal
Abstract
In this paper, a novel planar spiral antenna of multi-tabs is proposed for wireless power transmission system based on low frequency magnetic inductive coupling. The proposed antenna has higher transmission efficiency than conventional antennas such a rectangular spiral antenna and a spiral antenna. Also, it has a useful property of uniform power transmission in the region of the antenna aperture. For verification, a transmitting antenna and a receiving one for a wireless power transmission system using magnetic inductive coupling of 132 kHz low frequency are designed and tested. The transmitting antenna has three-tabs spiral of unequal-space for higher uniform magnetic coupling in the antenna aperture. For reducing the receiving antenna size, two receiving antennas of unequal space two-tabs on one-side and series double sides as well are designed, respectively. From measurement, transmission efficiency of the proposed antennas is improved up to $3{\sim}10$ dB compared to conventional antennas.
Keywords
Inductive Coupling; Wireless Power Transmission(WPT); Multi-Tabs Spiral Antenna;
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