多谐振器无芯片RFID标签设计

Design of multi-resonator chipless RFID tag

设计和分析了一种无芯片射频识别(RFID)标签。标签由多个按规律排列C形谐振器构成,通过频率编码实现有效的带宽利用,提出新的"0"位编码方式,提高了标签雷达散射截面(RCS)响应的鲁棒性。根据标签结构特性提出了一种新的编码方法,使标签的编码密度增加2倍,在22 mm×40 mm的尺寸内实现20位的编码容量。观测标签对应的RCS曲线得到仿真结果:相比之前的无芯片标签,设计的标签具有更稳定的RCS响应和更高的编码容量,更适用于实际的需求。

A chipless radio frequency identification（RFID） tag is designed and analyzed. The tag consists of some regularly arranged C-shaped resonators. The bandwidth is effectively used by frequency coding and the corresponding radar cross section（RCS） curve of the tag is observed. A new ＇0＇ bit coding method is proposed to improve the robustness of the tag RCS response, and a new coding method is proposed according to structure characteristics of tag, which double encoding density and achieve 20 bits capacity in a size of 22 mm × 40 mm. Through the simulation, the RCS curve corresponding to the tag is obtained. Compared with previous chipless tags, the tag has more stable RCS response and higher coding capacity, which is more suitable for practical needs.