On the backscattering from RFID tags installed on objects
On the backscattering from RFID tags installed on objects
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关于安装在物体上的 RFID 标签的反向散射
DOI：
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
F. Vega
中科院分区：
文献类型：
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作者：
Angelica P. Parra L;J. Pantoja;Ernesto Neira;F. Vega
本文讨论了在汽车挡风玻璃上放置RFID标签对后向散射功率的影响。首先分析的影响是由于RFID标签周围介质的变化而导致的RFID标签的天线与其芯片之间的不匹配。第二种效果是通过量化由于标签近场的改变而引起的标签有效增益的变化的增益惩罚来产生的。这两种影响都是使用三个标签的全波模拟计算的，并包括在功率链路预算中，以将后向散射功率的估计与测量进行比较。偏振挡风玻璃上的商业标签结果表明，功率预算主要受失配效应的影响，并可能对重要的功率损失负责。
This paper discusses the effects on the backscattered power of placing RFID tags on vehicular windshields. The first analyzed effect is the mismatch produced between the antenna of an RFID tag and its chip due to the changes of the surrounding medium of the RFID tag. The second effect is produced by the gain penalty which quantifies the variation of the tag effective gain due to the alteration of the tag near field. Both effects are calculated using full wave simulations for three tags and included in the power link budget to compare the estimation of the backscattered power with measurements. Results of commercial tags on polarized windshield glasses show that the power budget is mainly affected by the mismatch effect and can be responsible of important power losses.