两种新型树状结构的分形天线研究  

Study on Two Novel Tree-shaped Fractal Antennas

作　　者：周文平[1] 张卫[1,2] 刘金梅[1,2] 王小良[1,2] 

机构地区：[1]暨南大学信息科学技术学院 [2]喀山联邦大学信息技术及分形信号处理联合实验室,广州510632

出　　处：《科学技术与工程》2012年第20期5031-5034,共4页Science Technology and Engineering

基　　金：国家自然科学基金(10872079);广东省科技计划项目(2010B050900016)资助

摘　　要：结合分形技术的优点,研究了2种新型分形天线。分别对这2种天线进行了0阶、1阶、2阶仿真分析比较。其中一种新型树状分形结构应用于传统印刷偶极子天线,研究表明2阶分形天线的工作频点相对于0阶工作频点下降了59.7%,具有非常好的尺寸减缩性。另一种将圆弧应用于单极子天线中,具有良好的多频性,相邻谐振频点的比值是变化的,这也使得天线设计更加灵活。这2种树状分形结构具有设计简单、易制作,对于天线的小型化和多频性的研究和设计提供了较好的参考价值。Two novel treeshaped fractal antennas are proposed which are based on the theory of Fractal . Two different antennas are investigated by simulating analysis which the help of electromagnetic simulation software. One of the antennas was developed by the applying of a novel tree-shaped fractal structure to the dipole antenna which could be used in printing The resonant frequency of the two-iterative fractal antenna is 59.7% that is lower than that of the zero-iterative fractal one. It can be shown that it has a good size-reduction feature. The other one of the antenna was developed by the applying of arc branch to the monopole antenna. The simulation analysis results show that it has the good muhi-band characteristics. The adjacent of resonance frequency ratio is changing. It also makes the antenna design more flexible. The both of two fraetal tree structures have the features of simplification and valua- ble easier to produce. For the miniaturization of antenna and the multi-band antenna design the paper provide a good reference.

关 键 词：树状分形天线 多频性 小型化 

分 类 号：TN823.16[电子电信—信息与通信工程]