S. Zuffanelli, P. Aguilà, G. Zamora, F. Paredes, F. Martín, J. Bonache
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引用次数: 7
摘要
本文提出了一种适用于以光盘金属层为主要辐射元件(今后以光盘为基础的标签)的超高频射频标签的阻抗匹配方法。这种方法提供了一种非常简单的分析方法,并允许我们在所需频率下获得任意匹配电平,只需使用一个功元作为匹配网络。作为演示,将该方法应用于基于DVD;R的标签设计,使用Alien Higgs 3 RFID ASIC,并在915 MHz处强制共轭匹配。说明了标签的设计和合成过程,并给出了带宽优化分析。仿真和实验结果验证了该方法的有效性。制作的标签在915 MHz时的读取距离达到8.3 m,具有50 MHz的半功率带宽。
An impedance matching method for optical disc-based UHF-RFID tags
An impedance matching method applicable to UHF-RFID tags mounted on optical discs, where the main radiating element is the disc metallic layer (from now on optical disc-based tags) is presented in this paper. Such a method provides a very simple analytical approach and allows us to obtain any arbitrary matching level at the desired frequency, by using only one reactive element as a matching network. As a demonstration, the method is applied to the design of a DVD;R based tag, using the Alien Higgs 3 RFID ASIC, and forcing conjugate matching at 915 MHz. The tag design and synthesis process is explained and a bandwidth optimization analysis is also provided. The validity of the method is confirmed by EM simulations and experimental measurements. The measured read range of the fabricated tag reaches 8.3 m at 915 MHz and presents 50 MHz half-power bandwidth.