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dc.contributor.authorGürün, Gökçeen_US
dc.contributor.authorZahorian, Jaime S.en_US
dc.contributor.authorŞişman, Alperen_US
dc.contributor.authorKaraman, Mustafaen_US
dc.contributor.authorHasler, Paul E.en_US
dc.contributor.authorDeğertekin, F. Leventen_US
dc.date.accessioned2015-01-15T23:02:03Z
dc.date.available2015-01-15T23:02:03Z
dc.date.issued2012-10
dc.identifier.citationGurun, G., Zahorian, J. S., Sisman, A., Karaman, M., Hasler, P. E., & Degertekin, F. L. (2012). An analog integrated circuit beamformer for high-frequency medical ultrasound imaging. IEEE Transactions on Biomedical Circuits and Systems, 6(5), 454-467. doi:10.1109/TBCAS.2012.2219532en_US
dc.identifier.issn1932-4545
dc.identifier.otherWOS:000313906500007
dc.identifier.urihttps://hdl.handle.net/11729/436
dc.identifier.urihttp://dx.doi.org/10.1109/TBCAS.2012.2219532
dc.description.abstractWe designed and fabricated a dynamic receive beamformer integrated circuit (IC) in 0.35-mu m CMOS technology. This beamformer IC is suitable for integration with an annular array transducer for high-frequency (30-50 MHz) intravascular ultrasound (IVUS) imaging. The beamformer IC consists of receive preamplifiers, an analog dynamic delay-and-sum beamformer, and buffers for 8 receive channels. To form an analog dynamic delay line we designed an analog delay cell based on the current-mode first-order all-pass filter topology, as the basic building block. To increase the bandwidth of the delay cell, we explored an enhancement technique on the current mirrors. This technique improved the overall bandwidth of the delay line by a factor of 6. Each delay cell consumes 2.1-mW of power and is capable of generating a tunable time delay between 1.75 ns to 2.5 ns. We successfully integrated the fabricated beamformer IC with an 8-element annular array. Experimental test results demonstrated the desired buffering, preamplification and delaying capabilities of the beamformer.en_US
dc.language.isoengen_US
dc.publisherIEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INCen_US
dc.relation.isversionof10.1109/TBCAS.2012.2219532
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.sourceIEEE Transactions on Biomedical Circuits and Systemsen_US
dc.subjectEngineeringen_US
dc.subjectAll-pass filteren_US
dc.subjectAnalog delayen_US
dc.subjectBeam formingen_US
dc.subjectBiquad current mirroren_US
dc.subjectDelay lineen_US
dc.subjectUltrasound imagingen_US
dc.subjectPrml read/write channelen_US
dc.subjectIntravascular ultrasounden_US
dc.subjectMatrix transduceren_US
dc.subjectAnnular arraysen_US
dc.subjectCmut arraysen_US
dc.subjectCmosen_US
dc.subjectSystemsen_US
dc.subjectDesignen_US
dc.subjectChipen_US
dc.titleAn analog integrated circuit beamformer for high-frequency medical ultrasound imagingen_US
dc.typearticleen_US
dc.description.versionPublisher's Versionen_US
dc.contributor.departmentIşık Üniversitesi, Mühendislik Fakültesi, Elektrik-Elektronik Mühendisliği Bölümüen_US
dc.contributor.departmentIşık University, Faculty of Engineering, Department of Electrical-Electronics Engineeringen_US
dc.contributor.authorIDTR9425
dc.identifier.volume6
dc.identifier.issue5
dc.identifier.startpage454
dc.identifier.endpage467
dc.peerreviewedYesen_US
dc.publicationstatusPublisheden_US
dc.relation.publicationcategoryBelirsizen_US
dc.contributor.institutionauthorKaraman, Mustafa


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