The Sierpinski Gasket fractal antennas can provide the best generic multiband behaviour among the several planar feed monopole antennas available for use in automotive applications. The Gasket geometries used in antennas can be classical, scale perturbed, or both scale and flare perturbed. When used in the planar feed configuration, the classical and perturbed Gasket fractal antennas suffer from considerable reflections at one or more multiband frequencies, rendering these frequencies unsuitable for usage. Therefore, a design modification in these antennas is essential. A novel design modification has been proposed in the Sierpinski Gasket fractal antennas in the present research work by utilizing metamaterial engineered substrates. It has been found that the metamaterials not only reduce reflections but these materials also lower Gasket antenna frequencies, thereby, facilitating reduction in the antenna size. The findings have been validated through the experimental investigations. The comprehensive design analysis presented in the present paper shall prove highly beneficial to the antenna designers in rapidly customizing the vehicular antennas.

在可用于汽车应用的几种平面馈电单极天线中，Sierpinski Gasket 分形天线可以提供最佳的通用多频带行为。天线中使用的垫圈几何形状可以是经典的、标度扰动的或标度和耀斑扰动的。当用于平面馈电配置时，经典和扰动垫圈分形天线在一个或多个多频带频率处会遭受相当大的反射，从而使这些频率不适合使用。因此，对这些天线进行设计修改是必不可少的。在目前的研究工作中，通过利用超材料工程基板，在 Sierpinski 垫圈分形天线中提出了一种新颖的设计修改。已经发现，超材料不仅减少反射，而且这些材料还降低垫片天线频率，从而促进天线尺寸的减小。这些发现已通过实验研究得到验证。本文中提供的综合设计分析将证明对天线设计人员快速定制车载天线非常有益。