Polarimetric Radar Barcode: A Novel Chipless RFID Concept With High Data Capacity and Ultimate Tag Robustness
Polarimetric Radar Barcode: A Novel Chipless RFID Concept With High Data Capacity and Ultimate Tag Robustness
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偏振雷达条形码：一种新颖的无芯片 RFID 概念，具有高数据容量和终极标签稳健性
DOI：
10.1109/tmtt.2016.2601920
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发表时间：
2016
影响因子：
4.3
通讯作者：
M. Vossiek
中科院分区：
文献类型：
--
作者：
Maximilian Popperl;J. Adametz;M. Vossiek
本文提出了一种新颖的无芯片射频识别 (RFID) 概念，其中信息通过二维极化雷达条形码编码在标签上。我们利用这项技术实现了对于无芯片 RFID 来说非常出色的数据容量。尽管这些无芯片 RFID 标签很简单，但它们在恶劣环境中却非常坚固。偏振雷达条形码由一组几何结构形成，例如具有不同偏振反向散射行为的小型二面镜、平面元件或偶极元件。这些结构排列成二维阵列，以创建特定的偏振二维雷达条形码。该信息由偏振毫米波成像雷达读取。雷达的横向分辨率决定了最小可分辨元件尺寸，因此对于标签的最大数据容量至关重要。我们证明，理论上，如果使用毫米波多输入多输出雷达作为读取器，则可以在小于信用卡大小的表面上实现超过 800 位的数据容量。偏振编码反射器可以由金属或反射陶瓷结构形成，并且标签可以由单一材料组成。因此，标签的坚固性仅受所用材料的坚固性和耐热性的限制。我们通过在实验室测试装置中使用 20 位标签和中心频率为 77.5 GHz 的毫米波雷达系统进行的测量来验证所提出的无芯片 RFID 概念的性能和功能。
This paper presents a novel chipless radio frequency identification (RFID) concept where the information is encoded on the tag with a 2-D polarimetric radar barcode. We achieved a data capacity with this technique that is outstanding for chipless RFID. Even though these chipless RFID tags are simple, they are extremely robust in harsh environments. The polarimetric radar barcode is formed by a set of geometric structures like small dihedral mirrors, plane surface elements, or dipole elements with different polarimetric backscattering behaviors. These structures are arranged in a 2-D array to create a specific polarimetric 2-D radar barcode. The information is read by polarimetric millimeter-wave imaging radar. The lateral resolution of the radar determines the minimum resolvable element size and is therefore critical for the maximum data capacity of the tag. We show that, theoretically, a data capacity of more than 800 bit on a surface less than the size of a credit card can be achieved if a millimeter-wave multiple-input multiple-output radar is used as reader. The polarimetric encoded reflectors can be formed by metal or reflecting ceramic structures, and the tag can consist of a single material. Thus, tag robustness is limited only by the robustness and temperature resistance of the material used. We verify the performance and functionality of the proposed chipless RFID concept with measurements taken in a laboratory test setup with a 20-bit tag and a millimeter-wave radar system with 77.5-GHz center frequency.