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基于CMOS技术的微电子机械三轴磁场传感器的设计和测量
Chi-Han Wu1, Cheng-Chih Hsu2, Yao-Chuan Tsai3
1Department of Mechanical Engineering, National Chung Hsing University, Taichung 402, Taiwan.
Micromachines
|May 27, 2023
概括
本研究介绍了一种使用商业CMOS工艺制造的新型微电机系统 (MEMS) 三轴磁场传感器 (MFS). 开发的MFS显示出高灵敏度和低交叉灵敏度,用于精确的磁场测量.
科学领域:
- 微电子机械系统 (MEMS) 是一种微电子机械系统.
- 半导体设备物理 半导体设备物理
- 磁场检测 磁场检测 磁场检测
背景情况:
- 精确的磁场传感对于各种应用至关重要.
- 现有的磁场传感器经常面临交叉灵敏度和集成方面的挑战.
- 微电子机械系统 (MEMS) 提供了小型化和性能增强的潜力.
研究的目的:
- 设计,制造和描述一个新的MEMS三轴磁场传感器 (MFS).
- 通过半导体模拟和实验测量来研究MFS的性能.
- 在多轴磁场传感配置中最大限度地降低交叉灵敏度.
主要方法:
- 使用Sentaurus TCAD进行半导体设备模拟.
- 设计了一个独特的MFS结构,具有独立的z-MFS和y/x-MFS组件.
- 使用TSMC 1P6M 0.18微米CMOS工艺制造了MFS.
- 在z-MFS中整合了四个额外的收集器以提高灵敏度.
主要成果:
- 在MFS实现低交叉灵敏度不到3%.
- 对于每个轴的高灵敏度证明:z-MFS (237 mV/T),y-MFS (485 mV/T) 和x-MFS (484 mV/T).
- 模拟和实验结果验证了传感器的性能.
结论:
- 开发的MEMS MFS有效地以高精度在三个轴上测量磁场.
- 新的设计成功地降低了交叉灵敏度,提高了测量准确度.
- 将MEMS技术与CMOS工艺集成,可以高效地制造先进的磁传感器.
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