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  • Elektrik-Elektronik Mühendisliği Bölümü / Department of Electrical-Electronics Engineering
  • MF - Makale Koleksiyonu | Elektrik-Elektronik Mühendisliği Bölümü / Department of Electrical-Electronics Engineering
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  •   DSpace@Işık
  • 1- Fakülteler | Faculties
  • Mühendislik Fakültesi / Faculty of Engineering
  • Elektrik-Elektronik Mühendisliği Bölümü / Department of Electrical-Electronics Engineering
  • MF - Makale Koleksiyonu | Elektrik-Elektronik Mühendisliği Bölümü / Department of Electrical-Electronics Engineering
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An analog integrated circuit beamformer for high-frequency medical ultrasound imaging

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Date

2012-10

Author

Gürün, Gökçe
Zahorian, Jaime S.
Şişman, Alper
Karaman, Mustafa
Hasler, Paul E.
Değertekin, Fahrettin Levent

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Citation

Gurun, 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.2012.2219532

Abstract

We 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.

Source

IEEE Transactions on Biomedical Circuits and Systems

Volume

6

Issue

5

URI

https://hdl.handle.net/11729/436
http://dx.doi.org/10.1109/TBCAS.2012.2219532

Collections

  • MF - Makale Koleksiyonu | Elektrik-Elektronik Mühendisliği Bölümü / Department of Electrical-Electronics Engineering [181]
  • PubMed İndeksli Yayın Koleksiyonu [102]
  • Scopus İndeksli Makale Koleksiyonu [916]
  • WoS İndeksli Makale Koleksiyonu [931]



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