Juillard Jerome, Prache Pierre, Maris Ferreira Pietro, Barniol Nuria
IEEE Trans Ultrason Ferroelectr Freq Control. 2018 Dec;65(12):2440-2448. doi: 10.1109/TUFFC.2018.2869415. Epub 2018 Sep 10.
In this paper, we investigate how additive noise, e.g., thermomechanical noise, impacts the resolution of mode-localized resonant sensing architectures based on two passively coupled linear resonators. Existing work suggests that the ultimate resolution of these sensors can be improved by decreasing the coupling coefficient of the resonators. The present work gives an analytical proof that this result does not hold, and that the resolution of such sensors is actually independent of the coupling strength. These results are established for different output metrics and operating points, in closed loop and in open loop, and compared to those obtained with other approaches based on actively coupled resonators.
在本文中，我们研究了加性噪声，例如热机械噪声，如何影响基于两个被动耦合线性谐振器的模式局部化谐振传感架构的分辨率。现有工作表明，通过降低谐振器的耦合系数可以提高这些传感器的最终分辨率。本工作给出了一个分析证明，即该结果不成立，并且此类传感器的分辨率实际上与耦合强度无关。这些结果是针对不同的输出指标和工作点、在闭环和开环情况下建立的，并与基于主动耦合谐振器的其他方法所获得的结果进行了比较。
