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Ultra-Low-Cost RFID Based on Soft Magnetic Ribbons

机译:基于软磁条的超低成本RFID

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摘要

An ultra-low-cost radio-frequency identification tag is presented comprising a soft magnetic ribbon that is biased by an adjacent permanent magnet. The tag is read by measuring changes in the ribbon’s magnetization while applying magnetic ac and dc fields. A harmonic analysis of the response signal allows us to determine both the ribbons’ soft magnetic properties and the strength of the permanent magnet. When manufacturing the tags each of these two parameters can be independently chosen out of a set of well distinguishable values. This constitutes a two-digit identification system. A set of eight different tags was demonstrated to be identifiable.
机译:提出了一种超低成本射频识别标签,其包括由相邻的永磁体偏置的软磁条。通过在施加交流和直流磁场的情况下测量碳带磁化强度的变化来读取标签。通过对响应信号进行谐波分析,我们可以确定带的软磁特性和永磁体的强度。当制造标签时,这两个参数中的每一个都可以从一组很好区分的值中独立选择。这构成了一个两位数的识别系统。一组八个不同的标签被证明是可识别的。

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