Modeling Aspects of Miniaturized Microphones with perforated Moving Electrodes

Kód výsledku v 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>

Výsledek na webu

<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>

Jazyk výsledku

angličtina

Název v původním jazyce

Modeling Aspects of Miniaturized Microphones with perforated Moving Electrodes

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Modeling Aspects of Miniaturized Microphones with perforated Moving Electrodes

Popis výsledku anglicky

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.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20201 - Electrical and electronic engineering

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Forum Acusticum 2023

ISBN

978-88-88942-67-4

ISSN

2221-3767

e-ISSN

2221-3767

Počet stran výsledku

3

Strana od-do

—

Název nakladatele

European Acoustics Association

Místo vydání

Madrid

Místo konání akce

Torino

Datum konání akce

11. 9. 2023

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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