缓解相互合对循环偏振的影响,以改善MIMO系统中的带宽:一种新的方法
A Ali1, M N M Yasin1,2, I Adam1,2
1Advance Communication Engineering (ACE), Centre of Excellence, Universiti Malaysia Perlis (UniMAP), Kangar, Perlis, 01000, Malaysia.
Heliyon
|March 25, 2024
概括
本研究介绍了一种改进的循环极化多输入多输出介电共振器天线,该天线通过修剪方法显著减少了相互合,增强了MIMO应用的信号接收.
科学领域:
- 电磁和天线 电磁和天线
- 无线通信系统无线通信系统
- 微波工程 微波工程
背景情况:
- 靠近距离的天线元件的相互合 (MC) 会降低MIMO系统的性能.
- 循环偏振 (CP) 天线对于减轻偏振不匹配损失至关重要.
- 介电共振天线 (DRA) 在各种应用中提供尺寸和性能方面的优势.
研究的目的:
- 在CP MIMO DRAs中开发一种改进的互联合补偿技术.
- 保持出色的轴比 (AR) 性能,同时减少MC.
- 为了实现宽阻抗带宽和三频带循环极化.
主要方法:
- 采用了修剪方法来减少DRA单元之间的相互合.
- 特性模式分析 (CMA) 用于天线设计和优化.
- 探头料方法与补丁条相结合被用于带宽增强.
- 使用诸如多样性增长和道容量损失等指标验证了MIMO性能.
主要成果:
- 互联合被显著降低到低于-20dB.
- 实现了宽阻抗匹配带宽 (BW),范围从34%到2%.
- 在3.3GHz (11.66%),4.6GHz (3.04%) 和6.3GHz (2.22%) 观察到三频段3dBAR带宽.
- 模拟和测量结果显示出良好的一致性,验证了天线的性能.
结论:
- 拟议的修剪方法有效地抑制了CP MIMO DRA中的相互合.
- 设计的天线具有理想的特征,包括宽BW,三带CP和低MC.
- 经过验证的MIMO性能指标证实了其适用于增强信号接收的适用性.
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