A low noise capacitive MEMS accelerometer with anti-spring structure
A low noise capacitive MEMS accelerometer with anti-spring structure
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一种具有反弹簧结构的低噪声电容式MEMS加速度计
DOI:
10.1016/j.sna.2019.06.051
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发表时间:
2019-09
期刊:
影响因子:
--
通讯作者:
Ren Juan
中科院分区:
文献类型:
--
作者:
Zhang Hongcai;Wei Xueyong;Ding Yanyu;Jiang Zhuangde;Ren Juan
This work reports a capacitive MEMS accelerometer designed for seismic applications. The asymmetrical anti-spring structure is used and the device is microfabricated using SOI technology. Two capacitive readout methods, namely, capacitance-to-voltage-converter (CVC) and a commercial sigma-delta modulator, are introduced for comparison in the device characterization. For both methods, the accelerometer has a frequency dynamic range of 0-158 Hz. The sensitivity and non-linearity of the sensor is 53 fF/g (21.3 mV/g), 0.03% by the sigma-delta modulator, while the CVC method is 3.78 mV/g with the non-linearity 0.04%. As for the resolution, both methods have detected the lab's background noise of 11.5 μ g/Hz at 0.03 Hz and have exhibited the resolution of the sensor is better than 10 μ g/Hz. Regardless of the difference in parameter selection for the circuits, the CVC method has a much lower noise floor (51.8 ng/Hz at 1 Hz) than sigma-delta readout configuration (10 μ g/Hz at 1 Hz). The proposed MEMS accelerometer based on anti-spring structures shows its high sensitivity and low noise performance, demonstrating its potential in seismic applications.
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影响因子:
1.1
作者:
Hyunjoong Lee;J. Woo;Suhwan Kim
通讯作者:
Hyunjoong Lee;J. Woo;Suhwan Kim
DOI:
10.1109/icsens.2015.7370228
发表时间:
2015-11
期刊:
2015 IEEE SENSORS
影响因子:
--
作者:
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Yixing Chu;Yunfeng Liu;Jingxin Dong;B. Chi
DOI:
10.1007/s00542-010-1146-1
发表时间:
2010-12
期刊:
Microsystem Technologies
影响因子:
--
作者:
Kalyan Kumar Mistry;K. Swamy;S. Sen
通讯作者:
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影响因子:
4.6
作者:
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通讯作者:
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影响因子:
8.6
作者:
Abbott, B. P.;Abbott, R.;Zweizig, J.
通讯作者:
Zweizig, J.