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

Author

Cho, Jeong ; Lee, Jun-Young ; Song, Jae-hee ; Kim, Younglok ; Song, Tai-Kyong

Author_Institution

Dept. of Electr. Eng., Sogang Univ., Seoul

Volume

54

Issue

5

fYear

2007

fDate

5/1/2007 12:00:00 AM

Firstpage

1076

Lastpage

1079

Abstract

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

Keywords

demultiplexing equipment; optical design techniques; optical filters; beamformer; demultiplexers; four-tap filters; fractional delay filters; hardware complexity; postfiltering; Delay effects; Demodulation; Filtering; Finite impulse response filter; Frequency; Hardware; Interpolation; Low pass filters; Nonlinear filters; Ultrasonic imaging; Algorithms; Computer-Aided Design; Equipment Design; Equipment Failure Analysis; Image Enhancement; Image Interpretation, Computer-Assisted; Reproducibility of Results; Sensitivity and Specificity; Signal Processing, Computer-Assisted; Transducers; Ultrasonography;

fLanguage

English

Journal_Title

Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on

Publisher

ieee

ISSN

0885-3010

Type

jour

DOI

10.1109/TUFFC.2007.354

Filename

4225320