Frequency splitting of the main mode in a microelectromechanical resonator due to coupling with an anchor resonance

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© 2012 American Intitute of Physics (AIP). This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. http://scitation.aip.org/content/aip/journal/apl
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School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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en

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013503

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Applied Physics Letters, Volume 100, Issue 1

Abstract

We present an experimental study of the frequency scaling of the main, square-extensional mode in a piezoelectrically actuated plate resonator. The studied set consists of resonators of different plate sizes with identical anchors. The behavior of the square-extensional mode is analyzed using electrical impedancemeasurements and optical characterization of the mechanical vibration fields. The results reveal a detrimental anchor effect, where for certain plate sizes the square-extensional mode branch is split into two due to a coupled oscillation of the resonator plate and the anchors. 

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Lipiäinen, Lauri & Jaakkola, Antti & Kokkonen, Kimmo & Kaivola, Matti. 2012. Frequency splitting of the main mode in a microelectromechanical resonator due to coupling with an anchor resonance. Applied Physics Letters. Volume 100, Issue 1. 013503. ISSN 1077-3118 (electronic). ISSN 0003-6951 (printed). DOI: 10.1063/1.3673558.