Increasing the gain of a semicircular slot UWB antenna using an FSS reflector

Y. Ranga, K. Esselle, L. Matekovits, S. Hay
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引用次数: 25

Abstract

In this paper we demonstrate the gain enhancement of a semicircular slot antenna using a multilayer frequency-selective surface (FSS). A theoretical analysis of the FSS with a UWB semicircular slot antenna is presented. The multilayer FSS provides an appropriate reflection phase to act as a reflector and is able to enhance the gain of the slot antenna. Simulations show a linear phase response from 3.5 GHz to 12 GHz that is sufficient for ultra wideband operation. A significant improvement of 3 to 4 dB gain over the whole frequency range is demonstrated. The composite antenna has a theoretical gain of 8 dBi and a very small maximum gain variation of ±1.5 dB over the 3.5 to 10 GHz frequency range. Its compact configuration provides flexibility for mounting the reflector close to the slot antenna and makes it more suitable for modern UWB devices.
利用FSS反射器增加半圆槽超宽带天线的增益
在本文中,我们演示了使用多层频率选择表面(FSS)增强半圆缝隙天线的增益。对超宽带半圆缝隙天线的FSS进行了理论分析。多层FSS提供适当的反射相位作为反射器,并能够提高槽天线的增益。仿真结果表明,在3.5 GHz到12 GHz范围内的线性相位响应足以满足超宽带工作。在整个频率范围内,增益显著提高3 ~ 4db。该复合天线的理论增益为8 dBi,在3.5至10 GHz频率范围内,最大增益变化非常小,为±1.5 dB。其紧凑的配置为安装反射器靠近槽天线提供了灵活性,使其更适合现代超宽带设备。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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