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Multi-bit sigma-delta beamformer with minimal dynamic focusing artifacts

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Multi-bit sigma-delta beamformer with minimal dynamic focusing artifacts

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dc.contributor.author Cheong, Jia Hao
dc.contributor.author Lam, Yvonne Ying Hung
dc.contributor.author Koh, Liang Mong
dc.contributor.author Tiew, Kei Tee
dc.date.accessioned 2010-08-31T00:52:39Z
dc.date.available 2010-08-31T00:52:39Z
dc.date.copyright 2008
dc.date.issued 2010-08-31T00:52:39Z
dc.identifier.citation Cheong, J. H., Lam, Y. Y. H., Koh, L. M., & Tiew, K. T. (2008). Multi-bit sigma-delta beamformer with minimal dynamic focusing artifacts. IEEE International Conference on Electron Devices and Solid-State Circuits: Hong Kong, (pp.1-4).
dc.identifier.uri http://hdl.handle.net/10220/6371
dc.description.abstract Sigma-delta beamformer (SDBF) was proposed in recent year to increase the integration level of an ultrasound imaging system. However, the hardware efficient post-delay reconstruction structure suffers from artifact problem when dynamic focusing is applied. A sigma-delta beamformer based on cascaded reconstruction has successfully corrected the artifact problem by reducing the pre-delay quantization noise level. Based on the same principle, we developed a multi-bit SDBF. The multi-bit SDBF provides comparable image quality as the pre-delay reconstruction SDBF without any extra artifact correction processing. It also reduces the operation frequency as well as the power compared to the single-bit SDBF. Real point and cyst phantom images are presented to compare the performance of the proposed beamformer with other existing techniques. Synthesis results shows that the proposed beamformer can save up to 78% of the power consumed by pre-delay reconstruction SDBF.
dc.format.extent 4 p.
dc.language.iso en
dc.rights © 2008 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder. http://www.ieee.org/portal/site This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.
dc.subject DRNTU::Engineering::Electrical and electronic engineering::Electronic systems
dc.title Multi-bit sigma-delta beamformer with minimal dynamic focusing artifacts
dc.type Conference Paper
dc.contributor.conference IEEE International Conference on Electron Devices and Solid-State Circuits (2008 : Hong Kong)
dc.contributor.school School of Electrical and Electronic Engineering
dc.identifier.doi http://dx.doi.org/10.1109/EDSSC.2008.4760663
dc.description.version Published version

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