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Relative humidity sensing is crucial in many applications. However, hysteresis, lack of stability and low accuracy still exist in some of the available humidity sensors. This paper studies the effect of changing the supported beams' length and width on the resonance frequency and mass sensitivity of a CMOS-MEMS resonator proposed for relative humidity sensing applications. The resonator is designed...
This paper presents a monolithic, low-noise capacitive readout interface circuit for CMOS-MEMS resonator based gravimetric chemical gas sensors. In these sensor devices, where the sense capacitances are usually very weak, the readout interface circuit plays a crucial role in determining the overall sensor performance. Noise is observed in various active and passive devices affecting circuit performances...
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