AU4461772A - Improvements in or relating to acoustic surface wave devices - Google Patents

Improvements in or relating to acoustic surface wave devices

Info

Publication number
AU4461772A
AU4461772A AU44617/72A AU4461772A AU4461772A AU 4461772 A AU4461772 A AU 4461772A AU 44617/72 A AU44617/72 A AU 44617/72A AU 4461772 A AU4461772 A AU 4461772A AU 4461772 A AU4461772 A AU 4461772A
Authority
AU
Australia
Prior art keywords
relating
surface wave
wave devices
acoustic surface
acoustic
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
AU44617/72A
Other languages
English (en)
Inventor
George Pratt Ronald
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of AU4461772A publication Critical patent/AU4461772A/en
Expired legal-status Critical Current

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
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • H03H9/6426—Combinations of the characteristics of different transducers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14544—Transducers of particular shape or position
    • H03H9/1455—Transducers of particular shape or position constituted of N parallel or series transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Transducers For Ultrasonic Waves (AREA)
AU44617/72A 1971-07-22 1972-07-17 Improvements in or relating to acoustic surface wave devices Expired AU4461772A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB3436871A GB1357193A (en) 1971-07-22 1971-07-22 Acoustic surface wave devices
GBGB34368/71 1971-07-22

Publications (1)

Publication Number Publication Date
AU4461772A true AU4461772A (en) 1974-01-24

Family

ID=10364774

Family Applications (1)

Application Number Title Priority Date Filing Date
AU44617/72A Expired AU4461772A (en) 1971-07-22 1972-07-17 Improvements in or relating to acoustic surface wave devices

Country Status (7)

Country Link
AU (1) AU4461772A (es)
DE (1) DE2233137A1 (es)
ES (1) ES405007A1 (es)
FR (1) FR2146823A5 (es)
GB (1) GB1357193A (es)
IT (1) IT961484B (es)
NL (1) NL7209887A (es)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2319245A1 (fr) * 1975-07-24 1977-02-18 Thomson Csf Transducteur perfectionne pour filtre a ondes de surface a fonction de transfert asymetrique et filtre comportant un tel transducteur
FR2328323A1 (fr) * 1975-10-17 1977-05-13 Thomson Csf Transducteur pour filtre a ondes de surface a diffraction reduite, et filtre comportant un tel transducteur
GB1554366A (en) * 1977-02-04 1979-10-17 Philips Electronic Associated Acoustic surface wave devices
FR2447644A1 (fr) * 1979-01-26 1980-08-22 Thomson Csf Transducteur d'ondes elastiques de surface et filtre comprenant un tel transducteur
WO1980002091A1 (en) * 1979-03-21 1980-10-02 Inst Radiotekh Elektron Filter based on the use of surface acoustic waves
US4321567A (en) * 1980-03-24 1982-03-23 Raytheon Company Combining series sections weighting with withdrawal weighting in SAW transducers
GB2120891B (en) * 1982-05-25 1986-07-02 Plessey Co Plc Interdigital transducer
KR900008524B1 (ko) * 1987-08-19 1990-11-24 삼성전자 주식회사 위성수신기의 지대지간섭 제거를 위한 탄성표면파 필터
EP0489195A1 (de) * 1990-12-05 1992-06-10 SIEMENS MATSUSHITA COMPONENTS GmbH & CO. KG Fernseh-ZF-Filter für Quasi-/Paralleltonanwendungen

Also Published As

Publication number Publication date
IT961484B (it) 1973-12-10
GB1357193A (en) 1974-06-19
NL7209887A (es) 1973-01-24
ES405007A1 (es) 1975-07-01
FR2146823A5 (es) 1973-03-02
DE2233137A1 (de) 1973-02-08

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