In this paper, the design and analysis of a complementary Sierpinski Knopp fractal antenna are presented. It is realized by applying the Sierpinski Knopp space-filling curve on the basic square monopole antenna. The performance metrics of the antenna such as S11 (reflection coefficient), voltage standing wave ratio, radiation pattern, gain and current distribution at resonant frequencies are analyzed by using ANSYS Electronic Desktop software package. FR4 dielectric material is used as a substrate in which the radiating element of an antenna is printed. Vector network analyzer and anechoic chamber are used for measuring the fabricated antenna in order to validate the simulated data. The proposed antenna resonates at three frequencies that are 2.08, 4.93, and 6.46 GHz with a reflection coefficient of −20.5, −23.1, and −24.3 dB, respectively. The suggested antenna covers the frequency bands for mobile satellite service, Public Protection and Disaster Relief communication devoted to the emergency management system and INSAT C band applications.

中文翻译：

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用于应急管理系统的互补 Sierpinski Knopp 分形天线

本文介绍了互补谢尔宾斯基诺普分形天线的设计和分析。它是通过在基本方形单极天线上应用Sierpinski Knopp 空间填充曲线来实现的。天线的性能指标，例如小号11（反射系数）、电压驻波比、辐射方向图、增益和谐振频率下的电流分布采用ANSYS Electronic Desktop软件包进行分析。FR4 介电材料用作基板，其中印刷天线的辐射元件。矢量网络分析仪和消声室用于测量制造的天线，以验证模拟数据。所提出的天线在 2.08、4.93 和 6.46 GHz 三个频率上谐振，反射系数分别为 -20.5、-23.1 和 -24.3 dB。建议的天线涵盖用于应急管理系统和 INSAT C 波段应用的移动卫星服务、公共保护和救灾通信的频段。