Zaid Jamal, E Abdulhadi Abdulhadi, A Denidni Tayeb
Institut national de la Recherche scientifique Centre, Centre Énergie Matériaux Télécommunications 800, De La Gauchetière Ouest Bureau 6900, Montréal, QC H5A 1K6, Canada.
Sensors (Basel). 2019 Apr 28;19(9):1982. doi: 10.3390/s19091982.
In this paper, a miniaturized Ultra High Frequency Radio Frequency Identification (UHF-RFID) tag-based sensor antenna using a magneto- dielectric substrate (MDS) for wireless identification and sensor applications is presented. Two models of RFID tag-based sensors are designed, fabricated and measured. The first model uses two RFID tags; both of the tags are incorporated with two RFID chips. A passive sensor is also integrated in one of the proposed tags to serve as a sensor node, while the other tag is used as a reference node. Based on the difference in the minimum power required to activate the reference and sensor nodes, the sensed data (temperature or humidity) can be determined. The magneto-dielectric substrate layer is placed underneath the patch antenna to reduce the size of the proposed sensor by about 75% compared to a conventional RFID tag-based sensor. The magneto-dielectric layer is thin enough to embed in the planer circuit. To reduce the size of the proposed sensor, a multi-port tag for including the reference and sensor node in one antenna is also presented. The proposed RFID tag-based sensors have several features such as small size, they are completely capable for two objectives at the same time and easy to integrate with a planer circuit.
本文提出了一种基于小型化超高频射频识别（UHF-RFID）标签的传感器天线，该天线使用磁电介质基板（MDS）用于无线识别和传感器应用。设计、制造并测量了两种基于RFID标签的传感器模型。第一个模型使用两个RFID标签；两个标签都集成了两个RFID芯片。一个无源传感器也集成在所提出的其中一个标签中作为传感器节点，而另一个标签用作参考节点。基于激活参考节点和传感器节点所需的最小功率差异，可以确定感测数据（温度或湿度）。磁电介质基板层放置在贴片天线下方，与传统的基于RFID标签的传感器相比，可将所提出的传感器尺寸减小约75%。磁电介质层足够薄，可以嵌入平面电路中。为了减小所提出传感器的尺寸，还提出了一种用于在一个天线中包含参考节点和传感器节点的多端口标签。所提出的基于RFID标签的传感器具有几个特点，如尺寸小、完全能够同时实现两个目标且易于与平面电路集成。
