The comprehensive review of hybrid fractal antenna (HFA) has been presented in this article. Distinguished researchers have designed, analyzed, and investigated numerous types of HFA's as per the requirement of the market. Firstly, it gives introduction about the fractal antennas (FAs) along with the need of integration of the fractal geometries then research motivation. The extensive literature survey has been divided into three different parts as, fusion of same type of fractal geometries, amalgamation of two distinct fractal geometries and concoction of three different fractal geometries, further, the comparative analysis among these HFA's has been made on the basis of their size, geometries used for designing, number of resonant frequency bands, gain, bandwidth, radiation efficiency, circular polarization, and their applications. The juxtaposition among different HFA's has also been delineated in tabular form for more limpidity along with the findings of individual research article. The challenges faced by researchers while designing the antennas are also being portrayed in this article. This review may be supportive for the novices to carry out their research on HFA as such type of comparative analysis on HFA's is not existing in the open state of art literature as per best of authors knowledge.

中文翻译：

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混合分形天线的比较分析：综述

本文对混合分形天线 (HFA) 进行了全面回顾。杰出的研究人员根据市场需求设计、分析和研究了多种类型的 HFA。首先，它介绍了分形天线（FA）以及分形几何集成的需要，然后是研究动机。广泛的文献调查被分为三个不同的部分，即同类型分形几何的融合、两种不同分形几何的融合和三种不同分形几何的混合，进一步，在这些 HFA 的基础上进行了比较分析。它们的尺寸、用于设计的几何形状、谐振频带的数量、增益、带宽、辐射效率、圆极化及其应用。不同 HFA 之间的并列也以表格形式描绘出来，以便与个别研究文章的发现更加清晰。本文还描述了研究人员在设计天线时面临的挑战。这篇综述可能有助于新手开展他们对 HFA 的研究，因为据作者所知，这种对 HFA 的比较分析在开放的艺术文献中并不存在。