Agrawal, DK and Woodhouse, J and Seshia, AA (2012) Modelling non-linearities in a MEMS square wave oscillator. 2012 IEEE International Frequency Control Symposium, IFCS 2012, Proceedings. pp. 260-265.Full text not available from this repository.
The modelling of the non-linear behaviour of MEMS oscillators is of interest to understand the effects of non-linearities on start-up, limit cycle behaviour and performance metrics such as output frequency and phase noise. This paper proposes an approach to integrate the non-linear modelling of the resonator, transducer and sustaining amplifier in a single numerical modelling environment so that their combined effects may be investigated simultaneously. The paper validates the proposed electrical model of the resonator through open-loop frequency response measurements on an electrically addressed flexural silicon MEMS resonator driven to large motional amplitudes. A square wave oscillator is constructed by embedding the same resonator as the primary frequency determining element. Measurements of output power and output frequency of the square wave oscillator as a function of resonator bias and driving voltage are consistent with model predictions ensuring that the model captures the essential non-linear behaviour of the resonator and the sustaining amplifier in a single mathematical equation. © 2012 IEEE.
|Divisions:||Div C > Applied Mechanics|
|Depositing User:||Cron job|
|Date Deposited:||16 Jul 2015 14:04|
|Last Modified:||14 Oct 2015 03:11|