JPS561805B2 - - Google Patents

Info

Publication number
JPS561805B2
JPS561805B2 JP11771874A JP11771874A JPS561805B2 JP S561805 B2 JPS561805 B2 JP S561805B2 JP 11771874 A JP11771874 A JP 11771874A JP 11771874 A JP11771874 A JP 11771874A JP S561805 B2 JPS561805 B2 JP S561805B2
Authority
JP
Japan
Legal status (The legal status 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 status listed.)
Expired
Application number
JP11771874A
Other languages
Japanese (ja)
Other versions
JPS5144890A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html
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 filed Critical
Priority to JP11771874A priority Critical patent/JPS561805B2/ja
Priority to GB41867/75A priority patent/GB1529869A/en
Priority to US05/622,446 priority patent/US3990023A/en
Priority to FR7531573A priority patent/FR2331199A1/fr
Priority to DE2546193A priority patent/DE2546193C3/de
Publication of JPS5144890A publication Critical patent/JPS5144890A/ja
Publication of JPS561805B2 publication Critical patent/JPS561805B2/ja
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R17/00—Piezoelectric transducers; Electrostrictive transducers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02842—Means for compensation or elimination of undesirable effects of reflections
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14517—Means for weighting
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14517—Means for weighting
    • H03H9/1452—Means for weighting by finger overlap length, apodisation

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
JP11771874A 1974-10-15 1974-10-15 Expired JPS561805B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP11771874A JPS561805B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-10-15 1974-10-15
GB41867/75A GB1529869A (en) 1974-10-15 1975-10-13 Elastic surface wave device
US05/622,446 US3990023A (en) 1974-10-15 1975-10-14 Elastic surface wave device
FR7531573A FR2331199A1 (fr) 1974-10-15 1975-10-15 Appareil a onde de surface elastique comprenant des electrodes en peigne et utilisable notamment comme filtre de recepteur de television en couleur
DE2546193A DE2546193C3 (de) 1974-10-15 1975-10-15 Festkörperfilter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11771874A JPS561805B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-10-15 1974-10-15

Publications (2)

Publication Number Publication Date
JPS5144890A JPS5144890A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1976-04-16
JPS561805B2 true JPS561805B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1981-01-16

Family

ID=14718561

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11771874A Expired JPS561805B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1974-10-15 1974-10-15

Country Status (5)

Country Link
US (1) US3990023A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPS561805B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE2546193C3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2331199A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (1) GB1529869A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5421932A (en) * 1977-07-20 1979-02-19 Mitsubishi Heavy Ind Ltd Method of applying anti-corrosive treatment on finned tube
US4162465A (en) * 1977-09-14 1979-07-24 University Of Illinois Foundation Surface acoustic wave device with reflection suppression
JPS55110731A (en) * 1979-02-15 1980-08-26 Kawasaki Steel Corp Formation of electrically insulating film excellent in punchability and adhesion after stress-relief annealing in air on electrical steel plate
DE3209962A1 (de) * 1982-03-18 1983-09-29 Siemens AG, 1000 Berlin und 8000 München Mit akustischen wellen arbeitendes elektronisches bauelement
US4535265A (en) * 1984-05-17 1985-08-13 Kabushiki Kaisha Toshiba Surface acoustic wave transducer with internal acoustic reflection
DE3529916A1 (de) * 1985-08-21 1987-02-26 Siemens Ag Dispersiver interdigital-wandler fuer mit akustischen wellen arbeitenden anordnungen
JPS62247062A (ja) * 1986-04-07 1987-10-28 Daicel Chem Ind Ltd 腐蝕防止方法
JPS6237439U (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1986-07-23 1987-03-05
FR2638047B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 1988-10-14 1990-11-23 Thomson Csf
JPH02127809A (ja) * 1988-11-07 1990-05-16 Nec Corp 弾性表面波トランスデューサ
DE4019004A1 (de) * 1990-06-13 1991-12-19 Siemens Ag Interdigitalwandler mit fingerbreiten-wichtung fuer oberflaechenwellenanordnungen
US8398015B2 (en) 2004-07-06 2013-03-19 Sean O'Connor Aircraft that can fly horizontally and vertically
DE102007063470A1 (de) * 2007-12-20 2009-07-02 IFW - Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. Wandler, Resonator und Filter für akustische Oberflächenwellen

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839687A (en) * 1972-11-20 1974-10-01 Zenith Radio Corp Surface wave filter and method
US3882433A (en) * 1974-02-15 1975-05-06 Zenith Radio Corp Swif with transducers having varied duty factor fingers for trap enhancement

Also Published As

Publication number Publication date
FR2331199B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1980-05-30
JPS5144890A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1976-04-16
DE2546193C3 (de) 1980-08-21
DE2546193A1 (de) 1976-04-22
DE2546193B2 (de) 1979-11-15
FR2331199A1 (fr) 1977-06-03
US3990023A (en) 1976-11-02
GB1529869A (en) 1978-10-25

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