3D tag with improved read range for UHF RFID applications using Additive Manufacturing
3D tag with improved read range for UHF RFID applications using Additive Manufacturing
复制标题
使用增材制造提高 UHF RFID 应用读取范围的 3D 标签
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
T. Weller
中科院分区：
文献类型：
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作者：
Ramiro A. Ramirez;E. Rojas;T. Weller
本文提出了一种用于UHF RFID系统的3D标签天线几何结构。使用直接数字制造和传统的光刻和铜蚀刻，在具有相似特性的不同电介质材料上构建两个天线。天线臂和无源RFID集成电路之间的阻抗匹配是用H槽匹配技术实现的，具有模拟的10 dB回波损耗带宽，允许标签分别在902-928 MHz和864-868 MHz的美国和欧洲ISM RFID频带中操作。将天线的尺寸、重量和读取距离与市售标签进行比较，显示相对于测试的最佳标签，读取范围提高了136%（阈值功率为30 dBm）。相对于平面2D模型，还实现了78%的长度减少。测量了辐射图，显示了全方向波束图。
In this paper a 3D tag antenna geometry is proposed for UHF RFID systems. Two antennas were built over different dielectric materials with similar properties using both Direct Digital Manufacturing and traditional photolithography and copper etching. The impedance matching between the antenna arms and the passive RFID integrated circuit was accomplished with the H-slot matching technique with a simulated 10 dB return loss bandwidth that allows the tag to operate in the American and European ISM RFID bands of 902-928 MHz and 864-868 MHz, respectively. The antennas were compared to commercially available tags in size, weight and read distance, showing a read range improvement of 136% (for a threshold power of 30 dBm) with respect to the best tag tested. A reduction in length of 78 % with respect to a planar 2D model was also achieved. The radiation patterns were measured, showing an omni-directional beam pattern.