A Novel Characterization Method for MEMS Based Electrostatic Resonators for Q Enhancement and Feedthrough Current Elimination

Date

2016-11-03

Author

AYDIN GÖL, EBRU
Kangul, M.
Gökce, Fuat
Zorlu, O.
Külah, Haluk

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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This paper introduces a new technique for electrostatic resonance characterization based on 2nd harmonic distortion terms at the output current. Mathematical analysis of the output current shows that the 2nd harmonic component exhibits higher quality factor (Q) than the 1st harmonic. Besides, output current to feedthrough current ratio is higher in the 2nd harmonic term. Experimental results show that the Q of the resonating system is enhanced by 66% with 2nd harmonic operation. Moreover, the resonance peak has been improved from 0.2 dB to 5dB, showing the effective increase in output current to the feedthrough ratio.

Subject Keywords

Feedthrough current cancellation, Quality factor enhancement, Nonlinearity, Distortion, 2nd harmonic, MEMS, Resonator

URI

https://hdl.handle.net/11511/54439

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