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Author Dominguez, M. ♦ Pons, J. ♦ Ricart, J. ♦ Bermejo, A.
Sponsorship IEEE Sensors Council
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2003
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Delta-sigma modulation ♦ Oscillators ♦ Micromechanical devices ♦ Frequency ♦ Pulse amplifiers ♦ Sampling methods ♦ Strain measurement ♦ Q factor ♦ Signal design ♦ Actuators
Abstract A novel digital oscillator for MEMS, based on bandpass sigma-delta modulation is presented. Short pulses of force of the same amplitude maintain the oscillation and their associated bit-stream output serves to know the oscillation frequency of the resonator, which for low mechanical losses is very close to the natural frequency. Position sensing requirements are extremely simplified because at each sampling time it is only necessary to know whether the resonator position is above or below the steady state position. Continuous-time simulations are presented which show the behavior of the oscillator for a reference MEMS resonator and different sampling frequencies.
Description Author affiliation: Dept. d'Enginyeria Elettronica, Univ. Politecnica de Catalunya, Barcelona, Spain (Dominguez, M.; Pons, J.; Ricart, J.; Bermejo, A.)
ISBN 0780381335
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2003-10-22
Publisher Place Canada
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 290.19 kB
Page Count 5
Starting Page 834
Ending Page 838

Source: IEEE Xplore Digital Library