三叉树弧形分形偶极子天线的优化设计与实现

doi:10.16182/j.issn1004731x.joss.17-0087

系统仿真学报 ›› 2019, Vol. 31 ›› Issue (2): 306-315.doi: 10.16182/j.issn1004731x.joss.17-0087

三叉树弧形分形偶极子天线的优化设计与实现

张小红¹, 南晓晓¹, 杨义先^{1, 2}

1.江西理工大学信息工程学院,江西赣州 341000;
2.北京邮电大学网络空间安全学院,北京 100876

收稿日期:2017-02-19 修回日期:2017-04-27 出版日期:2019-02-15 发布日期:2019-02-15
作者简介:张小红(1966-),女,河北昌黎,博士,教授,研究方向为非线性动力学,视频保密通信。
基金资助:
国家自然科学基金(51665019, 61763017),江西省自然科学基金(20161BAB206145),江西省研究生创新专项资金(YC2015-S290)

Optimal Design and Implementation of Fractal Dipole Antenna Based on Arc of Trigeminal Tree Structure

Zhang Xiaohong¹, Nan Xiaoxiao¹, Yang Yixian^{1, 2}

1.School of Information Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China;
2.School of Network Space Security, Beijing University of Post and Telecommunications, Beijing 100876, China

Received:2017-02-19 Revised:2017-04-27 Online:2019-02-15 Published:2019-02-15

摘要/Abstract

摘要： 设计了一种基于弧形三叉树状结构的RFID分形偶极子贴片天线,该天线采用相对介电常数ε_r=4.4,介质损耗角正切tanδ=0.035的环氧玻璃板为介质基片,利用简单的微带巴伦结构进行馈电,通过平行双线结构实现更优的阻抗匹配。软件HFSS电磁性能仿真分析结果表明,该分形天线的回波损耗RL比二叉树弧形分形天线的16 dB更高,可以达到36 dB,阻抗匹配效果比较理想。对天线进行实物加工与测试,天线输入反射系数S11和方向图实测结果与软件仿真非常吻合。利用三叉树弧形分形结构的空间填充性,设计出的天线尺寸比二叉树弧形分形天线尺寸减少了80%,同时辐射面积相对二叉树有所提高,辐射性能均匀可靠。

关键词: 射频识别, 分形理论, 三叉树弧形, 偶极子天线, 阻抗匹配

Abstract: A RFID fractal dipole antenna is designed with the arc of the trigeminal tree structure, which is fed by simple microstrip balun to achieve better impedance matching within employing double parallel line structure and by using the dielectric substrate withε_r=4.4 and tan δ=0.035. The results of electromagnetic property simulation analysis of HFSS show that the return loss can reach 36dB, which is much higher than binary arc-shaped fractal antenna which is 16dB; and the impedance matching is very ideal. By physical processing and testing of the antenna, the measured results are in very good agreement with simulation calculation. Using the space filling of arc fractal structure, the material antenna size is reduced by 80% in comparison with binary arc-shaped fractal antenna. Moreover, the total medium radiation area is relative increased; and the radiation performance is uniform and reliable.

Key words: RFID, fractal theory, arc of the trigeminal tree, dipole antenna, impedance matching

中图分类号:

TN823

张小红, 南晓晓, 杨义先. 三叉树弧形分形偶极子天线的优化设计与实现[J]. 系统仿真学报, 2019, 31(2): 306-315.

Zhang Xiaohong, Nan Xiaoxiao, Yang Yixian. Optimal Design and Implementation of Fractal Dipole Antenna Based on Arc of Trigeminal Tree Structure[J]. Journal of System Simulation, 2019, 31(2): 306-315.

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三叉树弧形分形偶极子天线的优化设计与实现

Optimal Design and Implementation of Fractal Dipole Antenna Based on Arc of Trigeminal Tree Structure

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