Equivalent circuit-based analysis of CMUT cell dynamics in arrays

buir.contributor.authorAtalar, Abdullah
buir.contributor.authorKöymen, Hayrettin
buir.contributor.orcidAtalar, Abdullah|0000-0002-1903-1240
dc.citation.epage1024en_US
dc.citation.issueNumber5en_US
dc.citation.spage1016en_US
dc.citation.volumeNumber60en_US
dc.contributor.authorOğuz, H. K.en_US
dc.contributor.authorAtalar, Abdullahen_US
dc.contributor.authorKöymen, Hayrettinen_US
dc.date.accessioned2016-02-08T09:38:43Z
dc.date.available2016-02-08T09:38:43Z
dc.date.issued2013en_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.description.abstractCapacitive micromachined ultrasonic transducers (CMUTs) are usually composed of large arrays of closely packed cells. In this work, we use an equivalent circuit model to analyze CMUT arrays with multiple cells. We study the effects of mutual acoustic interactions through the immersion medium caused by the pressure field generated by each cell acting upon the others. To do this, all the cells in the array are coupled through a radiation impedance matrix at their acoustic terminals. An accurate approximation for the mutual radiation impedance is defined between two circular cells, which can be used in large arrays to reduce computational complexity. Hence, a performance analysis of CMUT arrays can be accurately done with a circuit simulator. By using the proposed model, one can very rapidly obtain the linear frequency and nonlinear transient responses of arrays with an arbitrary number of CMUT cells. We performed several finite element method (FEM) simulations for arrays with small numbers of cells and showed that the results are very similar to those obtained by the equivalent circuit model.en_US
dc.description.provenanceMade available in DSpace on 2016-02-08T09:38:43Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 70227 bytes, checksum: 26e812c6f5156f83f0e77b261a471b5a (MD5) Previous issue date: 2013en
dc.identifier.doi10.1109/TUFFC.2013.2660en_US
dc.identifier.issn0885-3010
dc.identifier.urihttp://hdl.handle.net/11693/20962
dc.language.isoEnglishen_US
dc.publisherIEEEen_US
dc.relation.isversionofhttp://dx.doi.org/10.1109/TUFFC.2013.2660en_US
dc.source.titleIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Controlen_US
dc.subjectAcoustic interactionen_US
dc.subjectCapacitive micromachined ultrasonic transduceren_US
dc.subjectCircuit simulatorsen_US
dc.subjectEquivalent circuit modelen_US
dc.subjectFinite element method simulationen_US
dc.subjectNonlinear transient responseen_US
dc.subjectPerformance analysisen_US
dc.subjectRadiation impedanceen_US
dc.subjectAcoustic impedanceen_US
dc.subjectCircuit simulationen_US
dc.subjectCircuit theoryen_US
dc.subjectCytologyen_US
dc.subjectEquivalent circuitsen_US
dc.subjectFinite element methoden_US
dc.subjectUltrasonic transducersen_US
dc.subjectCellsen_US
dc.titleEquivalent circuit-based analysis of CMUT cell dynamics in arraysen_US
dc.typeArticleen_US

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