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“卐”字分形贴片天线设计
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摘要
在微带贴片天线的基础上,利用"卐"字分形结构,设计出了分形微带贴片天线。根据天线的电场与辐射贴片的表面电流分布探究了天线的工作原理和双频段特征,仿真优化了天线的结构参数,深入研究了其驻波、方向图和天线增益等特性。仿真结果表明该天线在保持良好辐射特性的同时具有明显的双频段特征,设计的天线在无线通讯领域具有实际的工程应用价值。
A fractal patch antenna was designed with"卐"shape based on the microstrip patch antenna. According to electric field and the surface current distribution of the radiation patch for the antenna, the working principle and dual-band frequency had been demonstrated. Then the structural parameters of the antenna had been optimized. The VSWR, pattern, gain and other characteristics had been studied in this paper. The simulated results show that the antenna exhibited the obvious characteristics of miniaturization while maintaining good radiation. The antenna had the practical engineering values in the field of wireless communications.
引文
1.Sijia LI,Xiangyu CAO,Jun GAO,Yuejun ZHENG,Di ZHANG,Hongxi LIU,Fractal metamaterial absorber with three-order oblique cross dipole slot structure and its application for in-band RCS reduction of array antennas[J].Radio Engineering.2014,23(4):1092-1098.
    2 .李栋.小型化宽带天线及Koch分形天线研究[D].西安电子科技大学硕士论文.2013.
    3 .白雪伟.分形天线的优化研究与设计[D].哈尔滨工程大学硕士论文.2011.
    4 .李道铁.分形天线技术与设计研究[D].上海交通大学博士论文.2014.
    5 .D.Li,F.S.Zhang,Z.N.Zhao,L.T.Ma and X.N.Li.UWB Antenna Design Using Patch Antenna with Koch Fractal Boundary[C].Proceedings of the 2012 International Conference on Microwave and Millimeter wave Technology.2012:1111-1113.

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