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首页> 外文期刊>Applied Computational Electromagnetics Society journal >Omega-Shaped Tag Antenna with Inductively-Coupled Feeding Using U-Shaped Stepped-Impedance Resonators for RFID Applications
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Omega-Shaped Tag Antenna with Inductively-Coupled Feeding Using U-Shaped Stepped-Impedance Resonators for RFID Applications

机译：欧米茄形标签天线具有电感耦合馈电，用于使用U形级级阻抗谐振器进行RFID应用

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摘要

This study proposes a new omega-shaped tag antenna with inductively-coupled feeding (ICF) using U-shaped stepped- impedance resonators (SIRs). It aims at improving the performance of the tag antennas for Radio Frequency Identification (RFID) applications. The radiating body of the antenna is fed using two mirroring symmetrical U-shaped SIRs. This antenna is a simpler alternative for the existing antennas that match the impedance of the antenna to the chip impedance effectively applying varied reinforcement of the equivalent inductance of the radiating structure. In addition to the use of an omega-shaped structure, the proposed feeding technique boosts performance of the antenna impedance, dimensions, and peak gain. The measured size of the antenna was 50×55.55×1.6 mm3. It attains a peak gain of 1.8 dBi and radiation efficiency higher than 85% at its operating frequency. The experimental results revealed that this tag antenna has the characteristic of good impedance matching within the frequency range of 900-940 MHz, corresponding to a better power reflection coefficient of -3 dB. Comparison between the measured and simulated results verified that the proposed feeding method is capable to improve overall performance of RFID tag antennas.
机译：本研究提出了一种新的ω形标签天线，具有使用U形踩阻抗谐振器（SIR）的电感耦合馈电（ICF）。它旨在提高标签天线的性能进行射频识别（RFID）应用。使用两个镜像对称U形SIR馈送天线的辐射体。该天线是现有天线的更简单的替代方案，其与天线的阻抗与芯片阻抗相匹配，有效地应用于辐射结构的等效电感的变化。除了使用ω形状的结构之外，所提出的进给技术还提高了天线阻抗，尺寸和峰值增益的性能。天线的测量尺寸为50×55.55×1.6mm3。它在其工作频率下达到1.8 dBi的峰值增益和高于85％的辐射效率。实验结果表明，该标签天线在900-940MHz的频率范围内具有良好阻抗匹配的特性，对应于-3 dB的更好的功率反射系数。测量和模拟结果之间的比较验证了所提出的馈电方法能够提高RFID标签天线的整体性能。

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