A fractional filter-based beamformer architecture using postfiltering approach to minimize hardware complexity

A novel beamformer architecture using fractional delay filters is proposed and verified through experiments. By performing interchannel summation prior to filtering operation in the manner producing no error, the proposed architecture requires only three four-tap filters for the whole beamformer and...

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Bibliographic Details
Published in:IEEE transactions on ultrasonics, ferroelectrics, and frequency control ferroelectrics, and frequency control, 2007-05, Vol.54 (5), p.1076-1079
Main Authors: CHO, Jeong, LEE, Jun-Young, SONG, Jae-Hee, KIM, Younglok, SONG, Tai-Kyong
Format: Article
Language:English
Subjects:
Acoustic signal processing
Acoustics
Algorithms
Architecture
Channels
Computer-Aided Design
Delay
Delay effects
Demodulation
Demultiplexers
Equipment Design
Equipment Failure Analysis
Exact sciences and technology
Ferroelectric materials
Filtering
Filtration
Finite impulse response filter
Frequency
Fundamental areas of phenomenology (including applications)
Hardware
Image Enhancement - instrumentation
Image Interpretation, Computer-Assisted - instrumentation
Image Interpretation, Computer-Assisted - methods
Interpolation
Low pass filters
Nonlinear filters
Physics
Reproducibility of Results
Sensitivity and Specificity
Signal Processing, Computer-Assisted - instrumentation
Transducers
Ultrasonic imaging
Ultrasonography - instrumentation
Ultrasonography - methods
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Description
Summary:A novel beamformer architecture using fractional delay filters is proposed and verified through experiments. By performing interchannel summation prior to filtering operation in the manner producing no error, the proposed architecture requires only three four-tap filters for the whole beamformer and four simple demultiplexers per each channel
ISSN:0885-3010
1525-8955
DOI:10.1109/TUFFC.2007.354