新型低压MEMS共振器具有高f×Q产品灵感来自钟盘
概括
研究人员使用"钟盘"设计开发了新的在绝缘体 (SOI) 微电子机械共振器. 这些共振器实现了高质量因素,并显示了先进的传感和计时应用的前景.
科学领域:
- 微电子机械系统 (MEMS) 是一种微电子机械系统.
- 固态物理 固态物理
- 材料科学 材料科学 材料科学
背景情况:
- 微电子机械共振器对于定时和传感至关重要.
- 在绝缘体 (SOI) 技术为MEMS制造提供了优势.
- 优化共振器设计是提高性能指标的关键,例如质量因子 (Q).
研究的目的:
- 在SOI技术中设计,模拟,制造和表征新的"钟盘"微电子机械共振器.
- 为了研究不同的共振器设计的性能,特别是 (2, 0) 模式.
- 为了比较钟板共振器的特性与传统的无式设计.
主要方法:
- 用有限元模拟来探索各种设计.
- 使用在绝缘体 (SOI) 技术进行制造.
- 描述涉及静电驱动,激光多普勒振动计和开放/闭环动态分析.
主要成果:
- (2,0) 模式的钟板共振器在180 kHz时显示出高质量因子 (高达160),产生超过28 GHz的f × Q产物.
- 钟板共振器在Q-factor中始终超过了第一个没有紧的模式.
- 低启动电压 (dc < 1 V,ac < 250 mV) 足以进行操作.
- 对于 (2,0) 模式的温度频率系数,测量时为-48 ppm/°C.
结论:
- 在SOI技术中,钟板微电子机械共振器代表了重大进步.
- 在高Q因子应用中, (2,0) 模式为高Q因子应用提供了卓越的性能.
- 这些共振器对于传感和精确时间参考的未来应用非常有希望.
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