使用特征模式分析设计UWB循环偏振平面单极天线
Hyuk Heo1, Myeong-Jun Kang1, Seoungyong Park1
1Department of Electronic Engineering, Hanyang University, Seoul, 04763, South Korea.
Scientific reports
|November 1, 2024
概括
这项研究介绍了用于超宽带应用的增强型循环偏振平面单极天线. 新型设计显著提高了轴比带宽,在广泛的频率范围内实现了出色的性能.
科学领域:
- 电气工程 电气工程
- 电磁学 电磁学 电磁学 电磁学
- 天线理论天线理论
背景情况:
- 宽带循环偏振天线对于超宽带 (UWB) 系统至关重要.
- 现有的设计往往难以实现宽轴比 (AR) 带宽.
- 特性模式分析 (CMA) 是用于天线设计和优化的强大工具.
研究的目的:
- 为UWB应用设计和分析一种新的循环偏振平面单极天线.
- 为了增强基本平面单极天线的轴比 (AR) 带宽.
- 通过频率和时间域分析验证天线的性能.
主要方法:
- 利用特征模式分析 (CMA) 识别和激发直角模式,以改善AR带宽.
- 引入了特定的结构修改:三角裂,鱼翅形的头,以及地面平面上的L形条纹.
- 制造并测试了拟议的天线,测量了S11,AR,增益,效率和辐射模式.
主要成果:
- 实现了 -10 dB S11 带宽为 61.21% (5.73-10.78 GHz) 和 3 dB AR 带宽为 59.81% (6-11.12 GHz).
- 获得了56.9% (6-10.78 GHz) 的重叠带宽,实现了2.4-5.4 dBi的增益和80%的平均效率.
- 证明了全向辐射模式和良好的时间域性能 (组延迟,系统忠实度因子).
结论:
- 拟议的天线有效地实现了UWB应用的宽带循环偏振操作.
- 在指导AR带宽增强的设计修改方面,CMA发挥了重要作用.
- 该天线表现出强大的性能,适合要求高的UWB系统.
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