在ISM频段为WBAN使用寄生元素设计圆形偏振天线,用于WBAN
Muthukumara Rajaguru Kattiakara Muni Samy1, Abhishek Gudipalli1
1School of Electrical Engineering, Vellore Institute of Technology, Vellore, India.
Heliyon
|March 25, 2024
概括
这项研究引入了一种带宽循环偏振天线,具有高收益,利用寄生元素提高带宽和性能. 使用特征模式分析优化设计,以改善轴向比和增益,适用于生物医学应用.
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:
- 循环偏振天线对于无线通信系统至关重要,特别是在需要稳定的信号传输的生物医学应用中.
- 传统天线通常面临带宽和增益的限制,需要创新的设计方法.
研究的目的:
- 设计和验证一个单层,宽带,循环极化 (CP) 天线,具有高宽侧增益.
- 使用寄生元素和特征模式分析 (CMA) 来增强天线带宽和收益.
主要方法:
- 天线设计利用一个圆形的补丁与八个寄生元素在同一个平面上.
- 特性模式分析 (CMA) 用于模式分析和天线优化.
- 进行了全波电磁 (EM) 模拟和同等电路模型 (ECM) 分析.
- 在FR4材料上制造了一个原型,用于实验验证.
主要成果:
- 优化的天线表现出一个广泛的操作频段从5485到6130MHz (RadiS11Radi < -10dB).
- 实现3dB轴比 (AR) 带宽的频率在5680和5900 MHz之间.
- 制造的天线在ISM频段内显示了7-7.05dBi的高增益,适合生物医学应用.
结论:
- 拟议的天线设计通过对寄生元素的战略性使用和CMA优化,有效地提高了带宽和宽侧增益.
- 该设计展示了其在ISM频段内生物医学应用的实际可行性和适用性,因为其高增益和CP特性.
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