Ultra Wide band fractal antenna based on pentagonal geometry has been proposed in this thesis. Fractal shapes and their properties are discussed. The proposed antenna is microstrip line fed and its structure is based on fractal geometry where the resonance frequency of antenna is lowered by applying iteration techniques. Analysis of fractal antenna is done by using Software named CST Microwave Studio Suite 12. This antenna has low profile, is lightweight and easy to be fabricated and has successfully demonstrated multiband and broadband characteristics. The antenna size inclusive of the ground plane is compact with dimensions 7 X 7 cm2 and has wide operating bandwidths of 8 GHz. The antenna exhibits omnidirectional direction radiation coverage with a gain from 2 to 6.5 dBi in the entire operating band. Measured results show that this antenna operates from 4.7 to 12.7 GHz with a fractional bandwidth of above 90% and has relatively stable radiation patterns over its whole operation band.
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机译：本文提出了一种基于五边形几何形状的超宽带分形天线。分形形状及其性质进行了讨论。所提出的天线是微带线馈电的，其结构基于分形几何形状，其中通过应用迭代技术降低了天线的谐振频率。分形天线的分析是使用名为CST Microwave Studio Suite 12的软件完成的。该天线外形小巧，重量轻且易于制造，并已成功展示了多频带和宽带特性。包括接地平面在内的天线尺寸非常紧凑，尺寸仅为7 X 7 cm2，具有8 GHz的宽工作带宽。该天线在整个工作频段内具有从2到6.5 dBi的增益的全方向辐射覆盖。测量结果表明，该天线的工作频率为4.7至12.7 GHz，分数带宽超过90％，并且在整个工作频带内具有相对稳定的辐射方向图。
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