The progressions in the field of wireless technology can be highly attributed to the development of antennas, which can access high data rates, provide significant gain and uniform radiation characteristics. One such antenna called the Vivaldi antenna has attracted the utmost attention of the researchers owing to its high gain, wide bandwidth, low cross-polarization, and stable radiation characteristics. Over the years, different procedures have been proposed by several researchers to improve the performance of the Vivaldi antennas. Some of these different approaches are feeding mechanisms, integration of slots, dielectric substrate selection, and radiator shape. Correspondingly, the performance of a Vivaldi antenna can be increased by including dielectric lens, parasitic patch in between two radiators, corrugations, as well as metamaterials. This paper gives a systematic identification, location, and analysis of a large number of performance enhancement methods of Vivaldi antenna design depicting their concepts, advantages, drawbacks, and applications. The principal emphasis of this article is to offer an outline of the developments in the design of Vivaldi antennas over the last few years, where the most important offerings, mostly from IEEE publications, have been emphasized. This review work aims to reveal a promising path to antenna researchers for its advancement using Vivaldi antennas.

中文翻译：

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维瓦尔第天线：历史回顾和当前状态

无线技术领域的进步可以高度归功于天线的发展，天线可以访问高数据速率，提供显着的增益和均匀的辐射特性。其中一种称为维瓦尔第天线的天线因其高增益、宽带宽、低交叉极化和稳定的辐射特性而引起了研究人员的极大关注。多年来，一些研究人员提出了不同的程序来提高 Vivaldi 天线的性能。其中一些不同的方法是馈电机制、槽的集成、介电基板选择和辐射器形状。相应地，可以通过包括介电透镜、两个辐射器之间的寄生贴片、波纹以及超材料来提高 Vivaldi 天线的性能。本文对维瓦尔第天线设计的大量性能增强方法进行了系统的识别、定位和分析，描述了它们的概念、优点、缺点和应用。本文的主要重点是概述过去几年 Vivaldi 天线设计的发展，其中强调了最重要的产品，主要来自 IEEE 出版物。这项审查工作旨在为天线研究人员揭示使用 Vivaldi 天线推进其发展的有希望的途径。本文的主要重点是概述过去几年 Vivaldi 天线设计的发展，其中强调了最重要的产品，主要来自 IEEE 出版物。这项审查工作旨在为天线研究人员揭示使用 Vivaldi 天线推进其发展的有希望的途径。本文的主要重点是概述过去几年 Vivaldi 天线设计的发展，其中强调了最重要的产品，主要来自 IEEE 出版物。这项审查工作旨在为天线研究人员揭示使用 Vivaldi 天线推进其发展的有希望的途径。