Blokhina, ElenaElenaBlokhinaFeely, OrlaOrlaFeelyRicart, JordiJordiRicartDominguez, ManuelManuelDominguez2012-02-072012-02-072010 IEEE2010-05978-1-4244-5308-5http://hdl.handle.net/10197/3496Paper presented at the IEEE International Symposium on Circuits and Systems 2010 (ISCAS 2010), Paris, France, 30 May - 2 June, 2010.In this paper, we study the possible output of the pulsed digital oscillator (PDO) with multiple resonant modes of the mechanical resonator in the feedback loop. PDOs are simple circuits that allow linear resonators to maintain self-sustained oscillations and can work as mass-change resonant sensors. For a resonant sensor, activation of higher vibration modes of a mechanical resonator can be a way to improve its performance. We show that the location of the sensing/actuation system affects the output and can enhance higher mechanical modes.614036 bytesapplication/pdfenPersonal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.MEMSVibration modesOscillators, ElectricMicroelectromechanical systemsModulation (Electronics)Microresonators (Optoelectronics)ActuatorsConference Publication10.1109/ISCAS.2010.5537251https://creativecommons.org/licenses/by-nc-sa/1.0/