Altinok, Gunes and Al-Janabi, Mohammed and Kale, Izzet (2011) Improved ultrasound digital beamforming using single-bit sigma-delta modulators with band-pass decimation filters. In: Proceedings of the 2011 IEEE International Symposium on Circuits and Systems (ISCAS), Rio de Janeiro, Brazil, 15-18 May 2011. IEEE, pp. 2091-2094. ISBN 9781424494736Full text not available from this repository.
In this study, a novel hardware efficient digital ultrasound beamformer using single-bit second-order ?-? modulators incorporated with band-pass decimation filters is presented. Beside the reduced size, cost and power consumption of the phased array front-end circuitry, there are significant image artifacts introduced by ?-? beamformers. The elevated noise floor due to the repeated samples in dynamic focusing is greatly reduced by hardware efficient band-pass filters in the decimation stage following the beam summation. The B-scan images using experimental phantom data have shown that the proposed structure achieves significant improvements over the image resolution constructed by a conventional ?-? beamformer. This novel structure ensures high quality B-scan images by preserving the hardware simplicity of the conventional single-bit ?-? beamformers.
|Item Type:||Book Section|
|Subjects:||University of Westminster > Science and Technology > Electronics and Computer Science, School of (No longer in use)|
|Depositing User:||Miss Nina Watts|
|Date Deposited:||02 Feb 2012 15:41|
|Last Modified:||02 Feb 2012 15:41|
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