用于增益增强的u形电感耦合馈电RFID标签天线

2013 IEEE International Conference on RFID-Technologies and Applications (RFID-TA) Pub Date : 2013-09-01 DOI:10.1109/RFID-TA.2013.6694498

A. Alhawari, A. Ismail, A. Jalal, R. Abdullah, M. Rasid

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引用次数: 8

摘要

为了提高RFID标签天线的性能，提出了一种新型的电感耦合馈电技术。所应用的进料概念包括两个相对对称的u形结构，用于进料辐射体。通过对辐射体进行等效电感的柔性增强，使天线阻抗与芯片阻抗有效匹配，是一种简单的替代方案。在50 × 70 × 1.6 mm3的尺寸下，该馈电方法在天线尺寸、阻抗和增益方面具有更好的性能预期。该标签天线在工作频率下的峰值增益为2.5 dBi，是传统标签天线中最高的。实测结果表明，该标签天线在904 ~ 937 MHz范围内具有良好的阻抗匹配特性(功率反射系数优于-3 dB)。仿真结果与实测结果的对比验证了所提出的技术能够提高标签天线的整体性能。

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U-shaped inductively coupled feed RFID tag antenna for gain enhancement

An inductively coupled feed novel technique is proposed to enhance the performance of RFID tag antennas. The applied feeding concept comprises of two opposing symmetrical U-shaped structures to feed a radiating body. It is a simple alternative to effectively match between the antenna impedance with the chip impedance from the flexible augmentation of equivalent inductance to the radiating body. The proposed feeding method offers better expectation of performance among antenna size, impedance, and gain at the size of 50 × 70 × 1.6 mm3. The peak gain of the proposed tag antenna is 2.5 dBi at its operating frequency, which is higher among conventional tag antennas. Measured results indicate that this tag antenna has a good impedance matching characteristic at 904-937 MHz (power reflection coefficient better than -3 dB). The comparison between the simulation and measurement results verified the proposed technique capability to improve overall performance of the tag antennas.

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来源期刊

2013 IEEE International Conference on RFID-Technologies and Applications (RFID-TA)

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