WO2000010638A3 - An asynchronous oversampling beamformer - Google Patents

An asynchronous oversampling beamformer Download PDF

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Publication number
WO2000010638A3
WO2000010638A3 PCT/TR1998/000019 TR9800019W WO0010638A3 WO 2000010638 A3 WO2000010638 A3 WO 2000010638A3 TR 9800019 W TR9800019 W TR 9800019W WO 0010638 A3 WO0010638 A3 WO 0010638A3
Authority
WO
WIPO (PCT)
Prior art keywords
digital
memory
master clock
sum
uniform sampling
Prior art date
Application number
PCT/TR1998/000019
Other languages
French (fr)
Other versions
WO2000010638A2 (en
Inventor
Karaman Mustafa
Kozak Muecahit
Original Assignee
Baskent University
Karaman Mustafa
Kozak Muecahit
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Baskent University, Karaman Mustafa, Kozak Muecahit filed Critical Baskent University
Priority to PCT/TR1998/000019 priority Critical patent/WO2000010638A2/en
Publication of WO2000010638A2 publication Critical patent/WO2000010638A2/en
Publication of WO2000010638A3 publication Critical patent/WO2000010638A3/en

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
    • G01S7/52023—Details of receivers
    • G01S7/52025—Details of receivers for pulse systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
    • G01S7/52023—Details of receivers
    • G01S7/52033—Gain control of receivers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
    • G01S7/52053—Display arrangements
    • G01S7/52057—Cathode ray tube displays
    • G01S7/5206—Two-dimensional coordinated display of distance and direction; B-scan display
    • G01S7/52063—Sector scan display
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/52—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00
    • G01S7/52017—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S15/00 particularly adapted to short-range imaging
    • G01S7/52023—Details of receivers
    • G01S7/52025—Details of receivers for pulse systems
    • G01S7/52026—Extracting wanted echo signals
    • G01S7/52028—Extracting wanted echo signals using digital techniques

Abstract

The present invention provides a digital delay-and-sum receive beamformer with delta-sigma analog-to-digital (A/D) converters. The echoes' reflected are sensed by a transducer array. The signals received are sampled at the time instants required for the receive beamforming using the timing information stored in a memory and then digitized by ΔΣ modulators prior to summation. This requires a non-uniform sampling scheme employing different clocks at each array channel. The non-uniform sampling is achieved by performing a logical 'and' operation between a fixed master clock, which is slightly higher than the frequency at which the samples of beam sums are acquired, and a digital receive beamforming memory, which holds a '1' or a '0' for that analog sample associated with the master clock rate. The oversampled outputs, are then summed together. The coarse beam sum is further processed through a decimation filter to suppress high-frequency quantization noise.
PCT/TR1998/000019 1998-08-24 1998-08-24 An asynchronous oversampling beamformer WO2000010638A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/TR1998/000019 WO2000010638A2 (en) 1998-08-24 1998-08-24 An asynchronous oversampling beamformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/TR1998/000019 WO2000010638A2 (en) 1998-08-24 1998-08-24 An asynchronous oversampling beamformer

Publications (2)

Publication Number Publication Date
WO2000010638A2 WO2000010638A2 (en) 2000-03-02
WO2000010638A3 true WO2000010638A3 (en) 2000-07-13

Family

ID=21621363

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/TR1998/000019 WO2000010638A2 (en) 1998-08-24 1998-08-24 An asynchronous oversampling beamformer

Country Status (1)

Country Link
WO (1) WO2000010638A2 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009140607A1 (en) * 2008-05-15 2009-11-19 Mayo Foundation For Medical Education And Research Vibration generation and detection in shear wave dispersion ultrasound vibrometry with large background motions
ZA985834B (en) * 1997-07-21 1999-01-14 Henkel Corp Method for reinforcing structural members
FR2837285B1 (en) * 2002-03-13 2006-07-21 Thales Ultrasonics Sas ULTRASONIC IMAGING PACK
KR100947824B1 (en) * 2006-03-29 2010-03-18 주식회사 메디슨 Digital beamforming apparatus adopting a sigma-delta analog-to-digital converter in an ultrasound system
US7466256B2 (en) 2006-03-31 2008-12-16 Siemens Medical Solutions Usa, Inc. Universal ultrasound sigma-delta receiver path
US7583214B2 (en) * 2006-03-31 2009-09-01 Siemens Medical Solutions Usa, Inc. Dynamic receive beamformer with oversampling for medical diagnostic ultrasound
US8157738B2 (en) 2009-06-02 2012-04-17 Samplify Systems, Inc. Ultrasound signal compression
US8317706B2 (en) 2009-06-29 2012-11-27 White Eagle Sonic Technologies, Inc. Post-beamforming compression in ultrasound systems
US9941895B2 (en) * 2016-08-01 2018-04-10 Kopin Corporation Time delay in digitally oversampled sensor systems, apparatuses, and methods
JP7309746B2 (en) 2018-03-27 2023-07-18 コーニンクレッカ フィリップス エヌ ヴェ Systems and methods for performing analog-to-digital conversion between multiple spatially separated stages
CN112638266B (en) * 2018-09-06 2024-03-26 深圳迈瑞生物医疗电子股份有限公司 Ultrasonic probe and method for processing ultrasonic echo signals thereof, and ultrasonic imaging equipment
CN109412628B (en) * 2018-10-23 2020-12-11 中国电子科技集团公司第三十八研究所 X-waveband broadband multi-beam digital receiving system and signal processing method thereof
CN109444829B (en) * 2018-10-24 2020-09-01 四川九洲空管科技有限责任公司 Unified sequential control and cooperative processing method for radar system
CN112997095A (en) * 2020-04-03 2021-06-18 深圳市速腾聚创科技有限公司 Laser radar and autopilot device
CN111896927B (en) * 2020-07-19 2023-04-25 中国人民解放军空军预警学院 Communication-assisted radar target detection method based on 1-bit quantized sampling

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0040376A1 (en) * 1980-05-21 1981-11-25 Siemens Aktiengesellschaft Ultrasonic transducer array
US4809184A (en) * 1986-10-22 1989-02-28 General Electric Company Method and apparatus for fully digital beam formation in a phased array coherent imaging system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0040376A1 (en) * 1980-05-21 1981-11-25 Siemens Aktiengesellschaft Ultrasonic transducer array
US4809184A (en) * 1986-10-22 1989-02-28 General Electric Company Method and apparatus for fully digital beam formation in a phased array coherent imaging system

Also Published As

Publication number Publication date
WO2000010638A2 (en) 2000-03-02

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