支持EBG的超宽带循环极化阿基米德螺旋天线方案用于物联网应用
Bancha Luadang1, Chalanthon Ainthachot2, Pisit Janpangngern3
1Faculty of Engineering, Rajamangala University of Technology Rattanakosin, Nakhon Pathom, 73170, Thailand.
Scientific reports
|April 6, 2025
概括
本研究介绍了一种紧的超宽带循环偏振天线,使用电磁带间隙 (EBG) 反射器. 新的设计提高了性能和带宽,同时保持了低调,非常适合现代通信系统.
科学领域:
- 电磁和天线工程 电磁和天线工程
- 微波工程 微波工程
- 用于射频应用的材料科学
背景情况:
- 超宽带 (UWB) 天线对于高数据速率的无线通信至关重要.
- 为了同时实现圆极化 (CP) 和宽带宽,通常需要庞大的天线结构.
- 电磁带间隙 (EBG) 结构提供了一种控制电磁波传播和增强天线性能的方法.
研究的目的:
- 提出和验证一个低档次的超宽带循环偏振的阿基米德螺旋天线.
- 通过整合一种新型的高阻抗EBG反射器来研究实现的性能提升.
- 为了证明改进的阻抗匹配,轴向比 (AR) 带宽,并且在不增加天线高度的情况下获得.
主要方法:
- 一个低调天线的设计,包括一个阿基米德螺旋散热器和一个微条纹的圆球.
- 集成一个圆形EBG反射器与三个同心环的形单元细胞.
- 电磁模拟和分析天线参数,包括返回损失,增益,轴向比和辐射模式.
主要成果:
- 实现了显著的轮缩小,在最低频率下,天线高度为0.1波长.
- 证明了从1.5-8.75 GHz的超宽带操作,AR宽带宽为141.46%.
- 在6.90 GHz获得9.87dBic的最大增强,并改进了阻抗匹配.
结论:
- 拟议的天线集成了阿基米德螺旋与高阻抗EBG反射器,以提高带宽和CP性能.
- 新的EBG结构有效地改善了阻抗匹配和轴比,而不会影响天线的低形状.
- 该天线非常适合要求UWB,CP和紧形式因素的宽带通信系统.
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