一个低调的循环偏振毫米波宽带天线分析了室内场景中的物联网应用的链接预算
Parveez Shariff Bhadravathi Ghouse1, Pallavi R Mane1, Tanweer Ali1
1Department of Electronics and Communication Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal 576104, India.
Sensors (Basel, Switzerland)
|March 13, 2024
概括
一个紧的,低调的毫米波天线产生循环偏振 (CP) 已开发用于便携式设备. 这种CP天线有效地减轻了多路径和错位问题,在各种条件下提高了通信可靠性.
科学领域:
- 电磁学和天线理论
- 微波工程 微波工程
- 无线通信系统无线通信系统
背景情况:
- 圆极化 (CP) 天线对于手持设备至关重要,解决多路径色和错位的挑战.
- 在毫米波频率的便携式和移动应用中,对低调,紧型天线的需求很高.
研究的目的:
- 提出和分析一个能够产生循环偏振的紧型毫米波天线.
- 评估天线的性能,以便在物联网 (IoT) 室内通信系统中潜在使用.
主要方法:
- 天线设计有两个圆环,一个中心圆形补丁和四个嵌入的等边三角形.
- 使用特征模式理论进行分析,以了解阻抗匹配和CP生成机制.
- 测量反射系数,轴向比和天线增益.
- 在视线 (LOS) 和非视线 (NLOS) 条件下的链接边际估计和通信可靠性评估.
主要成果:
- 天线在20-30 GHz (模式1-4) 和30-40 GHz (模式1-5) 之间显示出良好的阻抗匹配.
- 测量反射系数:S11 下载> 10 dB 在23-42 GHz (带宽为19 GHz).
- 实现了4.2 GHz (36-40.2 GHz) 的3dB轴比带宽和从4到6.2dBi.
- 在LOS和NLOS场景下,物联网室内链接利率估计表现令人满意.
结论:
- 拟议的紧型天线有效地产生具有宽带特性的循环极化.
- 该设计显示了可靠的室内物联网通信的前景,即使在具有挑战性的非视线环境中也是如此.
- 天线的性能验证了其适用于需要便携式设备中强大的无线连接的应用程序的适用性.
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