A triple band-notched monopole antenna with reconfigurable characteristics is designed and investigated in this study for implementation in ultra-wideband (UWB) systems. A conventional rectangular monopole antenna is intended first to accomplish UWB performance characteristics. Further, to obtain triple notched characteristics, three U-shaped slots are etched on the rectangular radiating surface of the antenna. A wide frequency bandwidth ranging from 2.13 GHz to 10.50 GHz with three notched bands operating at 2.65 GHz (2.49–2.82 GHz), 3.43 GHz (3.18–3.68 GHz), and 4.08 GHz (3.93–4.22 GHz) have been successfully realized. By integrating three PIN diode switches, total eight reconfigurable states of operations have been realized in the UWB spectrum. A thorough analytical investigation along with the comparison of simulated and measured performances for the proposed antenna has been presented to manifest the applicability in practical systems. The antenna structure can be successfully implemented for rejecting interferences from dual WiMAX bands along with C-band fixed satellite communication systems, respectively.

中文翻译：

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用于抑制来自双 WiMAX 频段和卫星 C 频段服务的干扰的可切换三带陷波 UWB 天线建模

本研究设计并研究了一种具有可重构特性的三带陷波单极天线，用于在超宽带 (UWB) 系统中实现。传统的矩形单极天线首先旨在实现 UWB 性能特性。进一步地，为了获得三凹口特性，在天线的矩形辐射面上蚀刻了三个U形槽。已经成功实现了从 2.13 GHz 到 10.50 GHz 的宽频率带宽，其中包含三个工作在 2.65 GHz (2.49-2.82 GHz)、3.43 GHz (3.18-3.68 GHz) 和 4.08 GHz (3.93-4.22 GHz) 的陷波频段。通过集成三个 PIN 二极管开关，在 UWB 频谱中实现了总共八种可重构的操作状态。对所提议天线的模拟和测量性能进行了全面的分析研究，以证明其在实际系统中的适用性。该天线结构可以成功实现分别抑制来自双 WiMAX 频段和 C 频段固定卫星通信系统的干扰。