基于空间角度信息编码的无芯RFID标签设计

Design of Chipless RFID Tag Based on Space Angle Information

提出了一种基于空间角度信息编码的无芯射频识别标签,该标签的散射单元具有明显的空间角度特性,如V形结构.本文通过测量水平和垂直两个极化方向上的反向散射电场来实现对标签的识别.实验过程中使用复散射场来识别标签,可以去除环境噪声的干扰,提高识别效果.所设计标签在不同的编码状态下使用相同的频谱,提高了频谱的利用率.

This paper presents a novel chipless radio frequency identification（RFID）tag that encodes data based on space angle information.The scattering element of the proposed tag has the obvious character of the space angle,such as V-shape patch.The proposed tag is identified by measuring the back scattering field in two orthogonal polarization directions.It is convenient to remove the influence of environment static noise and helpful to improve the recognition effect.In addition,the proposed tag can encode 3.32 bits using one resonant frequency and the efficiency of spectrum can be improved.The realized tag operates in the 1.9GHz band and the identification error is less than 2.9.