Abstract

This paper presents a compact fractal antenna operating in the frequency range of 3.1–10.6 GHz that is designed, simulated and tested for UWB application. In the present days, the broadband wireless technology gained popularity due to its large bandwidth, high data rate and low complexity. In 2002 the Federal Communication Commission (FCC) allocated a frequency band of 3.1–10.6 GHz (UWB) for commercial applications. The antenna having the dimensions of 28×28 mm² with circular patch printed on the RT/ Duroid 5880 substrate having the height of 1.57 mm with the dielectric constant of 2.2 is discussed. In the circular patch, circular fractals are made up to the fifth iteration. The dimensions of the circular fractals are identified by using the Descartes theorem. The antenna with optimum dimensions is simulated by using the CST microwave studio and it is tested for its performance. The following antenna performance parameters are calculated: return losses S₁₁, VSWR, radiation patterns, gain, and group delay. This antenna is fabricated and tested for its performance, and the measured results are noted. The comparison of simulated and measured results indicate that they are in line.

中文翻译：

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用于 UWB 应用的紧凑型第五迭代分形天线

摘要

本文介绍了一种在 3.1-10.6 GHz 频率范围内运行的紧凑型分形天线，该天线专为 UWB 应用而设计、模拟和测试。目前，宽带无线技术因其大带宽、高数据速率和低复杂度而受到欢迎。2002 年，联邦通信委员会 (FCC) 为商业应用分配了 3.1–10.6 GHz (UWB) 的频段。天线尺寸为28×28 mm ²讨论了在 RT/ Duroid 5880 基板上印刷的圆形贴片，高度为 1.57 mm，介电常数为 2.2。在圆形补丁中，圆形分形由第五次迭代组成。圆形分形的维数是通过笛卡尔定理确定的。使用 CST 微波工作室模拟具有最佳尺寸的天线，并对其性能进行测试。计算以下天线性能参数：回波损耗S ₁₁、VSWR、辐射方向图、增益和群延迟。该天线已制造并测试其性能，并记录了测量结果。模拟和实测结果的比较表明它们是一致的。