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dc.contributor.authorBozkurt, A.
dc.contributor.authorYaralıoğlu, Göksen Göksenin
dc.date.accessioned2017-01-27T05:43:29Z
dc.date.available2017-01-27T05:43:29Z
dc.date.issued2016
dc.identifier.issn0885-3010en_US
dc.identifier.urihttp://hdl.handle.net/10679/4738
dc.identifier.urihttp://ieeexplore.ieee.org/document/7522084/
dc.description.abstractThis paper presents an analysis of thermal (Johnson) noise received from the radiation medium by otherwise noiseless capacitive micromachined ultrasonic transducer (CMUT) membranes operating in their fundamental resonance mode. Determination of thermal noise received by multiple numbers of transducers or a transducer array requires the assessment of cross-coupling through the radiation medium, as well as the self-radiation impedance of the individual transducer. We show that the total thermal noise received by the cells of a CMUT has insignificant correlation, and is independent of the radiation impedance, but is only determined by the mass of each membrane and the electromechanical transformer ratio. The proof is based on the analytical derivations for a simple transducer with two cells, and extended to transducers with numerous cells using circuit simulators. We used a first-order model, which incorporates the fundamental resonance of the CMUT. Noise power is calculated by integrating over the entire spectrum; hence, the presented figures are an upper bound for the noise. The presented analyses are valid for a transimpedance amplifier in the receive path. We use the analysis results to calculate the minimum detectable pressure of a CMUT. We also provide an analysis based on the experimental data to show that output noise power is limited by and comparable to the theoretical upper limit.en_US
dc.description.sponsorshipTÜBİTAK
dc.language.isoengen_US
dc.publisherIEEEen_US
dc.relationinfo:turkey/grantAgreement/TUBITAK/112E048
dc.relationinfo:turkey/grantAgreement/TUBITAK/113S070
dc.relation.ispartofIEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Controlen_US
dc.rightsrestrictedAccess
dc.titleReceive-noise analysis of capacitive micromachined ultrasonic transducersen_US
dc.typeArticleen_US
dc.peerreviewedyesen_US
dc.publicationstatusPublisheden_US
dc.contributor.departmentÖzyeğin University
dc.contributor.authorID(ORCID 0000-0002-3242-5797 & YÖK ID 192045) Yaralıoğlu, Göksenin
dc.contributor.ozuauthorYaralıoğlu, Göksen Göksenin
dc.identifier.volume63en_US
dc.identifier.issue11en_US
dc.identifier.wosWOS:000387987300023
dc.identifier.doi10.1109/TUFFC.2016.2594079en_US
dc.subject.keywordsCapacitive micromachined ultrasonic transducer (CMUT)en_US
dc.subject.keywordsMinimum detectable pressureen_US
dc.subject.keywordsMutual couplingen_US
dc.subject.keywordsRadiation impedanceen_US
dc.subject.keywordsThermal noiseen_US
dc.subject.keywordsTransimpedance amplifieren_US
dc.identifier.scopusSCOPUS:2-s2.0-84996946551
dc.contributor.authorMale1


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