低频RFID天线的谐振分析与仿真  

Low-frequency RFID antenna resonance analysis and simulation

作　　者：杨恒敏 YANG Hengmin(Yangzhou Branch of Jiangsu Union Technical Institute,Yangzhou 225003,China)

机构地区：[1]江苏联合职业技术学院扬州分院,江苏扬州225003

出　　处：《无线互联科技》2025年第6期6-11,共6页Wireless Internet Science and Technology

基　　金：扬州市教育科学“十四五”规划2021年度课题,项目名称:“五年制高职实训教学质量评价体系研究——以扬州市某学校电子信息工程技术专业为例”,项目编号:2021/P/138。

摘　　要：低频射频识别技术以其高穿透性和抗干扰能力,在短距离非接触识别中广泛应用。然而,在终端系统的设计与实现过程中,识别距离、信号稳定性和解码效率仍有提升空间。文章针对125 kHz射频识别系统的LC谐振电路,其电感值、电容值及品质因数等对谐振电路性能的影响,提出了一种优化设计方法,通过调整天线阻抗匹配和滤波设计,有效解决了谐振频率偏移与信号衰减问题。结合曼彻斯特编码特性,进一步改进数据传输的同步性和抗干扰能力。实验结果表明,优化后的系统在信号强度、识别距离及传输稳定性方面有显著提升,为RFID技术在半导体制造、门禁系统及工业生产线管理等领域的应用提供了理论与实践参考。Low-frequency RFID technology,known for its high penetration and anti-interference capabilities,has found extensive applications in short-range contactless identification.However,challenges remain in improving identification range,signal stability,and decoding efficiency in terminal system design and implementation.The article focuses on the LC resonance circuit of a 125 kHz RFID system,analyzing the impact of inductance,capacitance,and quality factor on circuit performance.An optimization method is proposed to address issues such as resonance frequency deviation and signal attenuation by fine-tuning antenna impedance matching and filter design.Additionally,Manchester encoding characteristics are utilized to enhance data transmission synchronization and anti-interference capabilities.Experimental results demonstrate significant improvements in signal strength,identification range,and transmission stability,providing theoretical and practical insights for applying RFID technology in semiconductor manufacturing,access control systems,and industrial production line management.

关 键 词：低频射频识别技术 LC谐振优化 曼彻斯特编码 短距离射频识别技术通信 

分 类 号：TN91[电子电信—通信与信息系统] TP39[电子电信—信息与通信工程]