Effective Magnetic Sheet Loading Method for Near Field Communication Antennas

Takaho SEKIGUCHI; Yoshinobu OKANO; Satoshi OGINO

doi:10.1587/transele.E99.C.1211

Special Section on Microwave and Millimeter-Wave Technology

Effective Magnetic Sheet Loading Method for Near Field Communication Antennas

Takaho SEKIGUCHI, Yoshinobu OKANO, Satoshi OGINO

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Keywords: near field communication, radio frequency identification tags, impedance matching, inductance

JOURNAL RESTRICTED ACCESS

2016 Volume E99.C Issue 10 Pages 1211-1214

DOI https://doi.org/10.1587/transele.E99.C.1211

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Abstract

Near field communication (NFC) antennas are often lined with magnetic sheets to reduce performance degradation caused by nearby metal objects. Though amorphous sheets have a high permeability and are suitable magnetic sheets for lining, their magnetic loss is also high. Therefore, this paper suggests a technique of suppressing magnetic loss by modifying the shape of the sheet without changing its composition. The utility of the proposed technique was investigated in this study.

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