一种顶部加载型Sierpinski垫片天线的分析

将分形几何应用于天线设计可以产生具有多频段或小型化特征的分形天线。传统的多频段分形天线Sierpinski垫片天线由于是有限次迭代生成的,它存在截取效应低端谐振频率比值几乎是其几何相似性因子的两倍,从而限制了其实际应用。本文针对一种小型化的加载型Sierpinski垫片天线进行了有效的研究,证实了加载对降低天线高端谐振频率的有效性,同时分析了结构参数对其工作频段的影响并提出了增大天线张角的方式以进一步小型化天线。

Analysis of a Top-loaded Sierpinski Gasket Antenna

Fractal geometry can be applied to antenna design to achieve multi-band or miniaturized fractal antennas.Traditional multi-band fractal antenna-Sierpinski gasket antenna can be obtained through a finite number of iteration with a result of truncation effect,leading to a ratio of lower resonant frequencies almost twice of its geometry similarity factor,which limits its practical application.A miniaturized loading Sierpinski gasket monopole antenna is investigated effectively in this paper to verify the availability of the loading element.Meanwhile,the effect of the geometry parameters on the working bands of the antenna is analyzed,and a new method of increasing the flare angle is proposed to miniaturize the antenna.