Enhanced Loop Structure of NFC Antenna for Mobile Handset Applications

A new structure of an NFC loop antenna for mobile handset applications is proposed. The proposed antenna consists of conventional loop elements and a parasitic loop embedded capacitor to enhance its performance. Although the sintered ferrite sheets with higher relative permeability ( μ r ≈ 200 ) hav...

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Bibliographic Details
Published in:International journal of antennas and propagation 2014-01, Vol.2014 (2014), p.1-6
Main Authors: Lee, Byungje, Yang, Sunghyun, Kim, Byeongkwan
Format: Article
Language:English
Subjects:
Antennas
Approximation
Battery
Cell phones
Cellular telephones
Deterioration
Loop antennas
Manufacturing
Performance enhancement
Permeability
R&D
Research & development
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Summary:A new structure of an NFC loop antenna for mobile handset applications is proposed. The proposed antenna consists of conventional loop elements and a parasitic loop embedded capacitor to enhance its performance. Although the sintered ferrite sheets with higher relative permeability ( μ r ≈ 200 ) have been used to reduce the performance deterioration due to the eddy current on the battery pack of a mobile handset, their costs are high, and they are considerably breakable. In this paper, with the proposed structure, we effectively enhance the performance of an NFC loop antenna by employing the ferrite-polymer composite with lower relative permeability ( μ r ≈ 55 ) .
ISSN:1687-5869
1687-5877
DOI:10.1155/2014/187029