IL127952A - Self-tuning crystal notch filter - Google Patents

Self-tuning crystal notch filter

Info

Publication number
IL127952A
IL127952A IL12795299A IL12795299A IL127952A IL 127952 A IL127952 A IL 127952A IL 12795299 A IL12795299 A IL 12795299A IL 12795299 A IL12795299 A IL 12795299A IL 127952 A IL127952 A IL 127952A
Authority
IL
Israel
Prior art keywords
self
notch filter
tuning crystal
crystal notch
tuning
Prior art date
Application number
IL12795299A
Other languages
English (en)
Other versions
IL127952A0 (en
Original Assignee
Gen Electric
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 Gen Electric filed Critical Gen Electric
Publication of IL127952A0 publication Critical patent/IL127952A0/xx
Publication of IL127952A publication Critical patent/IL127952A/xx

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/545—Filters comprising resonators of piezoelectric or electrostrictive material including active elements
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2291/00—Indexing codes associated with group G01N29/00
    • G01N2291/04—Wave modes and trajectories
    • G01N2291/044—Internal reflections (echoes), e.g. on walls or defects
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S600/00—Surgery
    • Y10S600/921—Manipulating image characteristics

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Transducers For Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
IL12795299A 1998-01-23 1999-01-07 Self-tuning crystal notch filter IL127952A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/012,805 US6047601A (en) 1998-01-23 1998-01-23 Self-tuning crystal notch filter

Publications (2)

Publication Number Publication Date
IL127952A0 IL127952A0 (en) 1999-11-30
IL127952A true IL127952A (en) 2003-07-31

Family

ID=21756777

Family Applications (1)

Application Number Title Priority Date Filing Date
IL12795299A IL127952A (en) 1998-01-23 1999-01-07 Self-tuning crystal notch filter

Country Status (4)

Country Link
US (1) US6047601A (ja)
JP (1) JP4455685B2 (ja)
DE (1) DE19901835A1 (ja)
IL (1) IL127952A (ja)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100574111C (zh) * 2001-03-03 2009-12-23 最佳动力技术有限合伙公司 用于调整与采样频率有关的滤波频率的装置和方法
WO2005120225A1 (en) 2004-06-10 2005-12-22 Steamwand International Pty Ltd Apparatus producing superheated water and/or steam for weed killing and other applications
US8254793B2 (en) * 2007-05-30 2012-08-28 Finisar Corporation Tuning select fiber optic channels for channel monitoring
KR100970920B1 (ko) * 2008-06-30 2010-07-20 권대훈 튜닝음향 피드백 장치
EP2337289A1 (en) * 2009-12-18 2011-06-22 Nxp B.V. RF receiver
WO2015176001A1 (en) * 2014-05-15 2015-11-19 Maxwell Adam D Pulse amplifier for driving ultrasound transducers
DE102022107066A1 (de) 2022-03-25 2023-09-28 Valeo Schalter Und Sensoren Gmbh Ultraschallsensor mit zuschaltbarem Kerbfilter
CN116116690B (zh) * 2023-02-20 2025-08-08 深圳市赛禾医疗技术有限公司 一种超声导管的驱动电路、方法、设备及介质

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3868605A (en) * 1973-11-15 1975-02-25 Us Navy Adaptable notch filter
US3979684A (en) * 1975-06-24 1976-09-07 Acker William F Feedback filter system
US4232192A (en) * 1978-05-01 1980-11-04 Starkey Labs, Inc. Moving-average notch filter
US4313183A (en) * 1980-06-27 1982-01-26 Saylors James A Acoustic distance measuring method and apparatus
GB8521378D0 (en) * 1985-08-28 1985-10-02 Plessey Co Plc Digital notch filter
US5030934A (en) * 1989-07-05 1991-07-09 Motorola, Inc. Crystal notch filter comprising discrete quartz crystals coupled to a trimmable RC bridging network
JPH04270523A (ja) * 1991-02-25 1992-09-25 Clarion Co Ltd 狭帯域妨害波検出装置
US5226057A (en) * 1991-03-20 1993-07-06 Rockwell International Corporation Receiver and adaptive digital notch filter
US5664575A (en) * 1994-12-29 1997-09-09 Siemens Medical Systems, Inc. Ultrasonic doppler imager having an adaptive tissue rejection filter with variable parameters
US5487389A (en) * 1994-12-29 1996-01-30 Siemens Medical Systems, Inc. Ultrasonic Doppler imager having an adaptive tissue rejection filter with enhanced tissue motion sensitivity

Also Published As

Publication number Publication date
US6047601A (en) 2000-04-11
JPH11271447A (ja) 1999-10-08
JP4455685B2 (ja) 2010-04-21
DE19901835A1 (de) 1999-08-19
IL127952A0 (en) 1999-11-30

Similar Documents

Publication Publication Date Title
AU137857S (en) Filter element
GB2347601B (en) Filter
AU137590S (en) Filter element
EP1124144A4 (en) OPTICAL FILTER
HUP0102953A3 (en) Filter
TW369947U (en) A filter set
AU139073S (en) Filter
GB9825489D0 (en) Filter elements
IL127952A0 (en) Self-tuning crystal notch filter
GB2348379B (en) Filter
GB9800924D0 (en) Filter arrangement
SG78358A1 (en) Filter
GB9800654D0 (en) Filter arrangement
GB2348154B (en) A filter unit
GB9819006D0 (en) Optical filter
GB9811747D0 (en) Filter
GB9816476D0 (en) Structured entry filters
GB9824272D0 (en) Filter
GB9811714D0 (en) A filter
GB2357446B (en) Filters
AU136939S (en) Filter element
DE59700909D1 (en) Monolithisches filter
GB2340264B (en) Entry filters
GB9718550D0 (en) Filter element
AU137150S (en) Filter

Legal Events

Date Code Title Description
FF Patent granted
RH1 Patent not in force