DE2546193C3 - Festkörperfilter - Google Patents

Festkörperfilter

Info

Publication number
DE2546193C3
DE2546193C3 DE2546193A DE2546193A DE2546193C3 DE 2546193 C3 DE2546193 C3 DE 2546193C3 DE 2546193 A DE2546193 A DE 2546193A DE 2546193 A DE2546193 A DE 2546193A DE 2546193 C3 DE2546193 C3 DE 2546193C3
Authority
DE
Germany
Prior art keywords
electrode
electrode fingers
electrodes
solid
surface wave
Prior art date
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
DE2546193A
Other languages
German (de)
English (en)
Other versions
DE2546193A1 (de
DE2546193B2 (de
Inventor
Toshikazu Yokohama Kokama (Japan)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Tokyo Shibaura Electric Co Ltd
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 Tokyo Shibaura Electric Co Ltd filed Critical Tokyo Shibaura Electric Co Ltd
Publication of DE2546193A1 publication Critical patent/DE2546193A1/de
Publication of DE2546193B2 publication Critical patent/DE2546193B2/de
Application granted granted Critical
Publication of DE2546193C3 publication Critical patent/DE2546193C3/de
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)
DE2546193A 1974-10-15 1975-10-15 Festkörperfilter Expired DE2546193C3 (de)

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 (3)

Publication Number Publication Date
DE2546193A1 DE2546193A1 (de) 1976-04-22
DE2546193B2 DE2546193B2 (de) 1979-11-15
DE2546193C3 true DE2546193C3 (de) 1980-08-21

Family

ID=14718561

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2546193A Expired DE2546193C3 (de) 1974-10-15 1975-10-15 Festkörperfilter

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
GB1529869A (en) 1978-10-25
FR2331199A1 (fr) 1977-06-03
JPS561805B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1981-01-16
FR2331199B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1980-05-30
JPS5144890A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1976-04-16
DE2546193A1 (de) 1976-04-22
DE2546193B2 (de) 1979-11-15
US3990023A (en) 1976-11-02

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
8328 Change in the person/name/address of the agent

Free format text: HENKEL, G., DR.PHIL. FEILER, L., DR.RER.NAT. HAENZEL, W., DIPL.-ING., PAT.-ANW., 8000 MUENCHEN

8320 Willingness to grant licences declared (paragraph 23)
8327 Change in the person/name/address of the patent owner

Owner name: KABUSHIKI KAISHA TOSHIBA, KAWASAKI, KANAGAWA, JP

8339 Ceased/non-payment of the annual fee