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dc.contributor.authorChao, Paul C. -P.en_US
dc.contributor.authorChiu, Chi-Weien_US
dc.contributor.authorHsu-Pang, Yuanen_US
dc.date.accessioned2014-12-08T15:05:59Z-
dc.date.available2014-12-08T15:05:59Z-
dc.date.issued2007-06-01en_US
dc.identifier.issn0018-9464en_US
dc.identifier.urihttp://dx.doi.org/10.1109/TMAG.2007.892871en_US
dc.identifier.urihttp://hdl.handle.net/11536/4530-
dc.description.abstractRecent design trends for modern mobile phones are evolving to be miniaturized and versatile sounds in quality. To these ends, a microspeaker with a corrugated diaphragm is employed to broaden the sound frequency range. Due to the fact that diaphragm corrugation and air closures were not considered in any past studies, this study presents comprehensive modeling with the consideration of diaphragm corrugations and air closures. It starts with the modeling on the subsystems of the voice coil motor (VCM) in the speaker. The magnetic field of the VCM is modeled by one set of finite elements, while the corrugated diaphragm is modeled by another set of finite elements. In addition, the air closures above or below the diaphragm are modeled by the third group of finite elements based on basic acoustics. Simulations are conducted with and without air closures. It is found that: 1) the speaker with 45 degrees corrugation exhibits overall higher (better) sound pressure levels (SPLs), while 2) the 75 degrees corrugation leads to unsatisfied, low SPLs below 1 kHz and two undesired antiresonances at higher frequencies. The theoretical findings are successfully validated by experiments.en_US
dc.language.isoen_USen_US
dc.subjectair closureen_US
dc.subjectcell phonesen_US
dc.subjectdiaphragm corrugationen_US
dc.subjectmicrospeakersen_US
dc.subjectvoice coil motor (VCM)en_US
dc.titleMagneto-electrodynamical modeling and design of a microspeaker used for mobile phones with considerations of diaphragm corrugation and air closuresen_US
dc.typeArticle; Proceedings Paperen_US
dc.identifier.doi10.1109/TMAG.2007.892871en_US
dc.identifier.journalIEEE TRANSACTIONS ON MAGNETICSen_US
dc.citation.volume43en_US
dc.citation.issue6en_US
dc.citation.spage2585en_US
dc.citation.epage2587en_US
dc.contributor.department電控工程研究所zh_TW
dc.contributor.departmentInstitute of Electrical and Control Engineeringen_US
dc.identifier.wosnumberWOS:000246706200167-
Appears in Collections:Conferences Paper


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