作者：牛国柱, 梁海燕, 孙罡

作者单位：南京理工大学, 江苏 南京 210094

关键词：射频识别技术; 天线; 性能测试; 金属环境

摘要：

天线是射频识别技术(radio frequency identification,RFID)中读写器的重要组成部分.实验测定了天线尺寸、品质因数、天线电感值以及金属环境对天线性能的影响,发现天线的读写距离大约为天线内部直径的2倍;品质因数最好为13～20;最佳电感值为700 H;金属环境会对天线性能的影响包括读写器天线与金属距离、金属材料、金属板开孔大小以及应答器安装孔的大小,最后给出了改善天线性能的4种方法.

Research of wireless RFID reader antenna

NIU Guo-zhu, LIANG Hai-yan, SUN Gang

Nanjing University of Science and Technology, Nanjing 210094, China

Abstract: Antenna is an important component of RFID reader. The effects of antenna size, quality factor, inductance and metal environment to the performance of antenna were tested in the experiment. From the experiment results, it could be seen that the read/write distance of antenna was about twice antenna's internal diameter, the best quality factor was between 13 and 20 and the best inductance was 700 μH. In addition, the metal environment which included the distance of reader's antenna to metal, metal material, the hole of metal and the hole of transponder's fixed metal can affect on the performance of antenna. In the end, several methods to improve the performance of antenna were given in the article.

Keywords: RFID; antenna; performance test; metal instrument

2011, 37(3): 5-8  收稿日期: 2010-6-18;收到修改稿日期: 2010-9-4

基金项目: 

作者简介: 朱国柱(1969-),男,江苏泗洪县人,副教授,主要从事计量技术及仪器研究工作.

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