A lumped circuit model for the radiation impedance of a 2D CMUT array element

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dc.authorid0000-0003-4806-951X
dc.contributor.authorBozkurt, Ayhanen_US
dc.contributor.authorKaraman, Mustafaen_US
dc.date.accessioned2019-08-31T12:10:23Z
dc.date.accessioned2019-08-05T16:05:03Z
dc.date.available2019-08-31T12:10:23Z
dc.date.available2019-08-05T16:05:03Z
dc.date.issued2005
dc.departmentIşık Üniversitesi, Mühendislik Fakültesi, Elektrik-Elektronik Mühendisliği Bölümüen_US
dc.departmentIşık University, Faculty of Engineering, Department of Electrical-Electronics Engineeringen_US
dc.description.abstractElements of a 2D array used for 3D acoustic imaging have dimensions smaller than half of the acoustic wavelength due to the Nyquist criteria for spatial sampling. Therefore, analyses involving circuit models for the array elements have to account for the reactive part of the radiation impedance of the array element. In this paper, we introduce a lumped circuit model for the complex radiation impedance of a 2D CMUT array element. Using the finite element method (FEM) we first show that the radiation impedance of the array element is identical to that of a plane piston transducer of comparable dimensions. Then, we show that the complex radiation impedance of the 2D array element can be represented by a simple resonant circuit placed parallel to the real radiation impedance in the Mason's equivalent circuit. The component values of the reactive lumped elements forming the resonant circuit were determined by fitting the impedance of overall equivalent circuit to the FEM results using the Nelder-Mead minimization algorithm.en_US
dc.description.versionPublisher's Versionen_US
dc.identifier.citationBozkurt, A. & Karaman, M. (2005). A lumped circuit model for the radiation impedance of a 2D CMUT array element. Paper presented at the Proceedings - IEEE Ultrasonics Symposium, 4, 1929-1932. doi:10.1109/ULTSYM.2005.1603251en_US
dc.identifier.doi10.1109/ULTSYM.2005.1603251
dc.identifier.endpage1932
dc.identifier.isbn0780393821
dc.identifier.isbn9780780393820
dc.identifier.issn1051-0117
dc.identifier.scopus2-s2.0-33847146311
dc.identifier.scopusqualityN/A
dc.identifier.startpage1929
dc.identifier.urihttps://hdl.handle.net/11729/2014
dc.identifier.urihttps://dx.doi.org/10.1109/ULTSYM.2005.1603251
dc.identifier.volume4
dc.identifier.wosWOS:000236090703015
dc.identifier.wosqualityN/A
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.indekslendigikaynakConference Proceedings Citation Index – Science (CPCI-S)en_US
dc.institutionauthorKaraman, Mustafaen_US
dc.language.isoenen_US
dc.peerreviewedYesen_US
dc.publicationstatusPublisheden_US
dc.publisherIEEEen_US
dc.relation.ispartofProceedings - IEEE Ultrasonics Symposiumen_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectRLC circuitsen_US
dc.subjectFinite element methodsen_US
dc.subjectSampling methodsen_US
dc.subjectAcoustic transducersen_US
dc.subjectEquivalent circuitsen_US
dc.subjectPistonsen_US
dc.subjectAcoustic wavesen_US
dc.subjectBiomembranesen_US
dc.subjectImpedanceen_US
dc.subjectAcoustic arraysen_US
dc.subjectRadiation impedanceen_US
dc.subjectNelder mead minimization algorithmsen_US
dc.subjectArray elementsen_US
dc.subjectAcoustic wavelengthen_US
dc.subjectNyquist diagramsen_US
dc.subjectLumped parameter networksen_US
dc.subjectFinite element methoden_US
dc.subjectAcoustic radiatorsen_US
dc.subjectAcoustic impedanceen_US
dc.subjectAcoustic imagingen_US
dc.subjectCapacitive micromachineden_US
dc.subjectUltrasonic imagingen_US
dc.subjectUltrasonic transducersen_US
dc.titleA lumped circuit model for the radiation impedance of a 2D CMUT array elementen_US
dc.typeConference Objecten_US
dspace.entity.typePublication

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