Modeling Aspects of Miniaturized Microphones with perforated Moving Electrodes

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21260%2F23%3A00368664" target="_blank" >RIV/68407700:21260/23:00368664 - isvavai.cz</a>
Result on the web
<a href="https://www.fa2023.org/" target="_blank" >https://www.fa2023.org/</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.61782/fa.2023.1262" target="_blank" >10.61782/fa.2023.1262</a>

Result language
angličtina
Original language name
Modeling Aspects of Miniaturized Microphones with perforated Moving Electrodes
Original language description
Miniaturized electroacoustic transducers whose moving electrodes are perforated for technological reasons have appeared in the literature recently. Since the perforation influences strongly the frequency response of the microphones, particularly at lower frequency range due to the acoustic short circuit, the precise modeling of such devices is of high interest. This contribution presents the analytical modeling aspects and theoretical results using the porosity approach. The effects of viscous and thermal boundary layers and the coupling of the displacement field of the moving electrodes in form of perforated plate (flexible clamped at all boundaries or rigid elastically supported) with the acoustic field inside the device are taken into account. The approximated analytical results are compared to the reference numerical (FEM) ones. The benefits and drawbacks of the analytical method are discussed.
Czech name
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Czech description
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Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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