Brinker Katelyn, Zoughi Reza
Applied Mircorwave Nondestructive Testing Laboratory (amntl), Missouri University of Science and Technology Rolla, MO 65409, USA.
IEEE Int Instrum Meas Technol Conf. 2018 Jul 12;2018:1-6. doi: 10.1109/i2mtc.2018.8409670. Epub 2018 May 17.
The use of chipless RFID is rapidly growing with applications for both identification and sensing purposes. In existing chipless RFID technology for identification purposes, radar cross-section (RCS) vs. frequency information is often used to create a unique identification (binary) code of 1's and 0's. In contrast, for purposes such as environmental sensing (i.e., temperature, humidity, gas concentration, etc.), a shift in the RCS frequency response is then correlated to the sought-for information. In this paper the utility of embedding chipless RFID sensors in various dielectric materials is investigated, where changes in the material properties cause a shift in the RFID frequency response and the changes are translated to a change in its original binary code. To illustrate the efficacy of this unique technique for materials characterization, electromagnetic simulations and measurements were conducted, the result of which are presented in this paper.
无芯片射频识别技术的应用正在迅速增长，可用于识别和传感目的。在现有的用于识别目的的无芯片射频识别技术中，雷达散射截面（RCS）与频率信息通常用于创建由1和0组成的唯一识别（二进制）代码。相比之下，对于环境传感（即温度、湿度、气体浓度等）等目的，RCS频率响应的变化则与所需信息相关联。本文研究了将无芯片射频识别传感器嵌入各种介电材料中的效用，其中材料特性的变化会导致射频识别频率响应发生偏移，并且这些变化会转化为其原始二进制代码的变化。为了说明这种独特技术用于材料表征的有效性，进行了电磁仿真和测量，本文展示了其结果。
