循环偏振的28GHz天线用于下一代的通信系统
Rania R Elsharkawy1, Khalid F A Hussein2, Asmaa E Farahat3
1Microstrip Circuits Department, Electronics Research Institute (ERI), Cairo, Egypt. Raniarefaat85@yahoo.com.
Scientific reports
|February 17, 2025
概括
一个用于28 GHz移动通信的新型循环偏振印制天线具有缺陷的地面结构,以提高性能. 这种低调的设计是先进天线系统的关键组件.
科学领域:
- 电气工程 电气工程
- 天线理论天线理论
- 微波工程 微波工程
背景情况:
- 毫米波 (mmWave) 移动通信需要高效的天线解决方案.
- 循环极化 (CP) 对于减轻无线系统中的多路径色和极化不匹配至关重要.
- 现有的天线设计可能缺乏新兴5G和超越应用程序所需的低调和特定极化特征.
研究的目的:
- 为28 GHz毫米波移动通信提出并验证一种新的循环偏振印刷天线.
- 为了实现低调的平面天线设计,适合集成到复杂的天线系统中.
- 为了证明天线作为MIMO,光束方向和光束形成阵列的构建块的能力.
主要方法:
- 一个CP打印天线的设计与一个有缺陷的地面结构 (DGS).
- 利用对称几何形状和三级微条线阻抗变压器来实现最佳匹配.
- 从正方形补丁到最终的天线设计的渐进的几何修改.
- 电磁模拟和实验制造用于性能验证.
主要成果:
- 在28 GHz实现了低于-10dB的反射系数大小.
- 在模拟中获得的轴向比 (AR) 在特定频段下低于0.5dB,在实验中低于3dB.
- 在1 GHz带宽 (27.5-28.5 GHz) 上证明阻抗匹配.
- 测量的峰值增益为7dBi,辐射效率超过90%.
结论:
- 拟议的基于DGS的CP打印天线符合28GHz移动通信系统的要求.
- 模拟和测量结果显示良好一致,验证了设计.
- 低调的平面性质使其适合集成到先进的天线阵列和系统中.
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