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A Depolarizing Chipless RFID Tag with Humidity Sensing Capability

机译:具有湿度传感能力的消耗芯片RFID标签

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A novel compact depolarizing chipless RFID tag is investigated for humidity sensing. The proposed chipless tag is based on three nested scatterers with the resonant frequencies in the band covering from 4 GHz to 7.5 GHz. The innermost scatterer is used to monitor humidity variation, while the outer two resonators are introduced to encode 6-bit data through using frequency shift encoding method. Polyvinyl alcohol (PVA) film is deposited on the surface of the sensing resonator, making it sensitive to the humidity. The relative humidity information is encoded in the deviation of the resonant frequency. In addition, the tag has a compact size of 15 × 15 × 0.8 mm3 with depolarizing characteristic which can increase the robustness of detection in complex environments.
机译:研究了一种新型的小型芯片去极化芯片RFID标签,用于湿度感测。所提出的ChipleS标签基于三个嵌套散射脉,其中带中的谐振频率从4 GHz到7.5 GHz。最内散散射器用于监测湿度变化,而外部两个谐振器通过使用频移编码方法引入通过频移编码方法编码6位数据。聚乙烯醇(PVA)膜沉积在传感谐振器的表面上,使其对湿度敏感。相对湿度信息被编码在谐振频率的偏差中。此外,标签的紧凑型尺寸为15×15×0.8 mm 3 利用去极化特性,可以增加复杂环境中检测的稳健性。

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