NFC天线磁片有效方向图的研究

2015 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT) Pub Date : 2015-08-01 DOI:10.1109/RFIT.2015.7377936

Takaho Sekiguchi, Y. Okano, Naoki Ohmura, S. Ogino

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引用次数: 2

摘要

如果在智能手机中安装了NFC(近场通信)/HF-RFID(无线射频识别)的支付系统，NFC天线在13.56MHz的通信性能会受到电池壳或电路板的影响。为了解决这个问题，将高磁导率的磁片插入NFC/HF-RFID天线和金属物体中。磁性化合物或烧结铁氧体已被用作高磁导率片。然而，这些薄片厚度不能抑制以提高NFC/HF-RFID天线的性能。为了使这些材料的厚度更薄，我们提出了非晶磁性片。此外，由于非晶磁性片的损耗大，还提出了抑制损耗的方法。

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Study on effective pattern of magnetic sheet attached on NFC antenna

In case of payment system with NFC (Near Field Communication)/HF-RFID (Radio Frequency IDentification) installed into the smart-phone, NFC antenna's communication performance at 13.56MHz is deteriorated by the battery case or circuit boards. To solve this problem, the magnetic sheet with high permeability is inserted into the NFC/HF-RFID antenna and metal object. Thin magnetic compound or sintered ferrite has been used as the high permeability sheet. However, these sheet thickness could not be suppressed to improve the NFC/HF-RFID antenna's performance. In order to make thickness of these materials thinner, we propose amorphous magnetic sheet. Besides because the loss of amorphous magnetic sheet is large, that loss suppression technique is also proposed.

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来源期刊

2015 IEEE International Symposium on Radio-Frequency Integration Technology (RFIT)

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