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  • Elektrik-Elektronik Mühendisliği Bölümü / Department of Electrical-Electronics Engineering
  • MF - Bildiri 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 - Bildiri Koleksiyonu | Elektrik-Elektronik Mühendisliği Bölümü / Department of Electrical-Electronics Engineering
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An Analog beamformer for integrated high-frequency medical ultrasound imaging

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Date

2011

Author

Gürün, Gökçe
Zahorian, Jaime
Tekeş, Coşkun
Karaman, Mustafa
Hasler, Paul E.
Değertekin, Fahrettin Levent

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Citation

Gürün, G., Zahorian, J., Tekeş, C., Karaman, M., Hasler, P. E. & Değertekin, F. L. (2011). An analog beamformer for integrated high-frequency medical ultrasound imaging. Paper presented at the 2011 IEEE Biomedical Circuits and Systems Conference (BioCAS), 65-68. doi:10.1109/BioCAS.2011.6107728

Abstract

We designed and fabricated a dynamic receive beamforming integrated circuit (IC) in 0.35-mu m CMOS technology. This beamformer is suitable for integration with an ultrasound annular array for high-frequency (30-50 MHz) intravascular ultrasound (IVUS) imaging. The beamformer IC is capable of buffering, delaying and preamplification for 8 receive channels. We explored an analog delay cell based on a currentmode first-order all-pass filter, which is used as the basic building block to form an analog dynamic delay line. We also explored a bandwidth enhancement method on the delay cell that 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 delay between 1.75 ns to 2.5 ns, enabling dynamic receive beamforming over a focal range from 1.4 mm to 2 mm. We successfully integrated the fabricated beamformer IC with an 8-element annular array. Our experimental test results demonstrated the desired buffering, preamplification and delaying capabilities of the beamformer.

Source

2011 IEEE Biomedical Circuits and Systems Conference (BioCAS)

URI

https://hdl.handle.net/11729/1660
http://dx.doi.org/10.1109/BioCAS.2011.6107728

Collections

  • MF - Bildiri Koleksiyonu | Elektrik-Elektronik Mühendisliği Bölümü / Department of Electrical-Electronics Engineering [222]
  • Scopus İndeksli Bildiri Koleksiyonu [452]
  • WoS İndeksli Bildiri Koleksiyonu [353]

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