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 devices; 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)
  • Transducers For Ultrasonic Waves (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Ultra Sonic Daignosis Equipment (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 (xx)
JP (1) JP4455685B2 (xx)
DE (1) DE19901835A1 (xx)
IL (1) IL127952A (xx)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MXPA03007825A (es) * 2001-03-03 2004-03-16 Optimum Power Technology Lp Aparato y metodo para ajustar la frecuencia de filtro en relacion a frecuencia de muestreo.
PL1768489T3 (pl) 2004-06-10 2014-01-31 Steamwand Tech Pty Ltd Acn 123 244 913 Urządzenie i sposób do niszczenia roślinności
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
US9867999B2 (en) 2014-05-15 2018-01-16 The Regents Of The University Of Michigan Pulse amplifier for driving ultrasound transducers
DE102022107066A1 (de) 2022-03-25 2023-09-28 Valeo Schalter Und Sensoren Gmbh Ultraschallsensor mit zuschaltbarem Kerbfilter

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

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Legal Events

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