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초음파 영상 장치의 아날로그 빔포머 용 샘플 클락 생성기

Title
초음파 영상 장치의 아날로그 빔포머 용 샘플 클락 생성기
Authors
김윤지
Date Issued
2013
Publisher
포항공과대학교
Abstract
A sample clock generator circuit for an analog beamformer is implemented by using a NOR-type MASK ROM look-up table and digital blocks. To reduce the size of the look-up table, the sampling time interval is kept constant until the error reaches ±4Ts (Ts : period of 160MHz clock) and it is either increased or decreased by only one Ts per step. The look-up table stores the focal point number and the UP/DN code. The size of the look-up table is 1.97Mbit for a 64-channel transducer with the maximum delay of 7.9usec.
URI
http://postech.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000001560597
http://oasis.postech.ac.kr/handle/2014.oak/1846
Article Type
Thesis
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