Low-Cost Inkjet-Printed Fully Passive RFID Tags for Calibration-Free Capacitive/Haptic Sensor Applications
Low-Cost Inkjet-Printed Fully Passive RFID Tags for Calibration-Free Capacitive/Haptic Sensor Applications
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DOI：
10.1109/jsen.2014.2366915
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发表时间：
2015-06-01
影响因子：
4.3
通讯作者：
Tentzeris, Manos M.
中科院分区：
文献类型：
--
作者：
Kim, Sangkil;Kawahara, Yoshihiro;Tentzeris, Manos M.
提出了一种用于电容式感测和其他物联网应用的全无源、紧凑且低成本的电容式无线射频识别（RFID）使能感测系统。这种免校准传感器采用双标签拓扑结构，由两个紧密间隔的RFID标签组成，标签上带有偶极天线和连接到其中一个标签的印刷电容传感器组件。一个串联的LC谐振器被用来既减少天线的尺寸和提高两个天线之间的隔离度和设计/优化步骤进行了详细讨论。除RFID芯片外的所有组件都使用银纳米颗粒墨水喷墨印刷在现成的相纸上。完整的传感器尺寸为84 mm x 95 mm，该传感器兼容EPC Class 1 Gen 2（UHF）标准读取器技术，频率为915 MHz。
A fully passive, compact, and low-cost capacitive wireless radio frequency identification (RFID)-enabled sensing system for capacitive sensing and other Internet of Things applications is proposed. This calibration-free sensor utilizes a dual-tag topology, which consists of two closely spaced RFID tags with dipole antennas and printed capacitive sensor component connected to one of the tags. A series LC resonator is used to both reduce the antenna size and improve the isolation between the two antennas and the design/optimization steps are discussed in detail. All components except for the RFID chips are inkjet printed on an off-the-shelf photopaper using a silver nanoparticle ink. The complete sensor dimension is 84 mm x 95 mm and the sensor is compatible with EPC Class 1 Gen 2 (UHF) standard reader technology at 915 MHz.