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一个小型化的超宽带V形尖端电子探针用于近场测量
Mahmoud Mohammed Khodeir1, Zhaowen Yan1, Fuyu Zhao1
1School of Electronic and Information Engineering, Beihang University, Beiijng 100191, China.
Sensors (Basel, Switzerland)
|July 13, 2024
概括
一个新的V形超宽带 (UWB) 探测器可以进行高达52GHz的敏感近场测量. 这种微型,具有成本效益的探测器可以准确地诊断小型电子系统中的电磁干扰 (EMI).
科学领域:
- 电气工程 电气工程
- 电磁学 电磁学 电磁学 电磁学
- 微波工程 微波工程
背景情况:
- 近场测量探头对于诊断电子系统中的电磁干扰 (EMI) 是至关重要的.
- 现有的探头往往缺乏复杂的,集成印刷电路板 (PCB) 所需的小型化,带宽或灵敏度.
- 超宽带 (UWB) 技术为高分辨率电磁场分析提供了潜力.
研究的目的:
- 提出和描述一个灵敏的,小型化的,超宽带 (UWB) 电场 (E-field) 探测器,用于近场测量.
- 为了证明探测器在紧的电子系统中诊断电磁干扰 (EMI) 的能力.
- 为了实现广泛的操作带宽和高空间分辨率,进行详细的电磁分析.
主要方法:
- 设计了一种新的V形尖端和斜坡结构,以改善场分布和阻抗匹配.
- 使用四层印刷电路板 (PCB) 和高性能罗杰斯RO4003和RO4450介电材料的制造.
- 探测器的带宽,灵敏度和空间分辨率在广的频率范围 (10kHz至52GHz) 中的表征.
主要成果:
- 探测器具有从10kHz到52GHz的跨度带宽,与UWB应用程序兼容.
- 在2 GHz时实现了 -106.29 dBm的被动E-探头灵敏度,在40 GHz时达到 -87.48 dBm.
- 在20GHz和35GHz之间的频率上,显示了0.5mm的非常小的空间分辨率.
结论:
- 拟议的微型UWB电子探针为近场测量提供了灵敏且具有成本效益的解决方案.
- 它的V形设计和制造工艺产生了出色的性能,包括宽带宽和高空间分辨率.
- 该探头适用于在远程测量,无人机和航空电子等要求高的电子系统中诊断EMI.
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