高收益四端口循环偏振光圈合MIMO天线
Abdelhady M Abdelhady1, Hesham A Mohamed2, Wael A E Ali3
1Benha Faculty of Engineering, Benha University, Benha, Egypt. abdoeng78@gmail.com.
Scientific reports
|September 18, 2025
概括
本研究介绍了一种新型的四端口循环极化 (CP) 多输入多输出 (MIMO) 天线,用于X频应用,实现高增益和宽带宽. 该设计确保了先进的无线系统的优异多样性性能.
科学领域:
- 电气工程 电气工程
- 天线理论天线理论
- 无线通信无线通信
背景情况:
- 在X频段应用中实现高性能循环极化 (CP) 多输入多输出 (MIMO) 天线具有挑战性.
- 现有的设计经常与紧的形状因素,宽轴比带宽和高端口隔离作斗争.
- 多路径干扰和先进无线系统中强大的连接需求需要改进的天线解决方案.
研究的目的:
- 为X频段设计和实施一个四端口光圈合的CP-MIMO天线.
- 为了增强天线增益和轴比带宽,使用带有像素阵列的寄生补丁.
- 为了实现高性能MIMO特性,包括多样性增长和低包裹相关性.
主要方法:
- 使用90度功率分隔器通过独特的狗骨槽激发两个直角模式.
- 整合了一个寄生性补丁与9x9阵列的平方像素细胞来提高增益和AR带宽.
- 使用光圈合器来激发天线元件.
主要成果:
- 实现了9.8-13 GHz (28%) 的阻抗带宽 (IBW) 和10.7-12.27 GHz (13.67%) 的3dB轴比带宽 (ARBW).
- 测量的端口隔离低于-20dB,增益为7-8dBic.
- 证明了优秀的MIMO性能,多样性增益 (DG) ≥9.99dB,外相关系数 (ECC) ≤0.002,频道容量损失 (CCL) ≤0.2位/秒/Hz.
结论:
- 拟议的天线设计有效地解决了X波段CP-MIMO的挑战.
- 创新的使用直角模式激发和寄生补丁显著提高性能指标.
- 该天线的优越增益,带宽和MIMO多样性功能使其适用于先进的X频无线技术.
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