提高RFID标签的稳定读取范围,使用槽口和容量间隙用于户外定位应用程序
Redouane Jouali1, Hassan Ouahmane1, Jalal Khan2
1LTI Laboratory, Ecole Nationale des Sciences Appliquées, Chouaib Doukkali University, El Jadida 24000, Morocco.
Micromachines
|July 29, 2023
概括
这项研究介绍了一种紧的UHF RFID标签天线,读取范围为17米. 容量槽和空隙增强阻抗匹配,以提高RFID性能.
科学领域:
- 电气工程 电气工程
- 电磁学 电磁学 电磁学 电磁学
- 天线设计天线设计
背景情况:
- 提高超高频 (UHF) RFID标签天线性能对于各种应用至关重要.
- 阻抗匹配是将传统的工业RFID芯片与设计的天线集成的一个关键挑战.
研究的目的:
- 提出和研究一个小尺寸的UHF RFID标签天线.
- 分析电容槽和空隙对天线阻抗匹配和性能的影响.
- 为了实现UHF RFID系统的大读取范围.
主要方法:
- 设计和模拟一个在860-960 MHz运行的紧型UHF RFID标签天线.
- 对电容槽和空隙进行阻抗匹配的调查.
- 使用三维电磁 (EM) 模拟 (CST MWS).
- 对天线原型的制造和实验测试.
主要成果:
- 容量槽和空隙显著改善了返回损失和阻抗匹配.
- 在 870 MHz 实现最佳阻抗匹配,输入阻抗为 Z = 16 + j184 Ω.
- 显示最大读取范围高达17米,回报损失为-14dB.
- 天线表现出一个全向的辐射模式,在180°的水平变化中保持读取范围.
结论:
- 拟议的小型UHF RFID标签天线有效地增强了读取范围和阻抗匹配.
- 该设计验证了容量槽和空隙对于RFID天线优化的实用性.
- 由于其性能和辐射特性,天线显示出本地化应用的巨大潜力.
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