GB1357193A - Acoustic surface wave devices - Google Patents

Acoustic surface wave devices

Info

Publication number
GB1357193A
GB1357193A GB3436871A GB3436871A GB1357193A GB 1357193 A GB1357193 A GB 1357193A GB 3436871 A GB3436871 A GB 3436871A GB 3436871 A GB3436871 A GB 3436871A GB 1357193 A GB1357193 A GB 1357193A
Authority
GB
United Kingdom
Prior art keywords
array
arrays
finger
fingers
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
GB3436871A
Other languages
English (en)
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.)
Philips Components Ltd
Original Assignee
Mullard 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 Mullard Ltd filed Critical Mullard Ltd
Priority to GB3436871A priority Critical patent/GB1357193A/en
Priority to DE19722233137 priority patent/DE2233137A1/de
Priority to AU44617/72A priority patent/AU4461772A/en
Priority to NL7209887A priority patent/NL7209887A/xx
Priority to FR7225991A priority patent/FR2146823A5/fr
Priority to IT5163672A priority patent/IT961484B/it
Priority to ES405007A priority patent/ES405007A1/es
Publication of GB1357193A publication Critical patent/GB1357193A/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)
  • Transducers For Ultrasonic Waves (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
GB3436871A 1971-07-22 1971-07-22 Acoustic surface wave devices Expired GB1357193A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
GB3436871A GB1357193A (en) 1971-07-22 1971-07-22 Acoustic surface wave devices
DE19722233137 DE2233137A1 (de) 1971-07-22 1972-07-06 Oberflaechenwellenfilter
AU44617/72A AU4461772A (en) 1971-07-22 1972-07-17 Improvements in or relating to acoustic surface wave devices
NL7209887A NL7209887A (fr) 1971-07-22 1972-07-18
FR7225991A FR2146823A5 (fr) 1971-07-22 1972-07-19
IT5163672A IT961484B (it) 1971-07-22 1972-07-19 Perfezionamento nei filtri ad onde acustiche superficiali ad esempio filtri a frequenza intermedia per televisione
ES405007A ES405007A1 (es) 1971-07-22 1972-07-20 Un dispositivo de onda superficial.

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
GB1357193A true GB1357193A (en) 1974-06-19

Family

ID=10364774

Family Applications (1)

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

Country Status (7)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083021A (en) * 1975-10-17 1978-04-04 Thomson-Csf Transducer for surface wave filters with reduced diffraction
US4321567A (en) * 1980-03-24 1982-03-23 Raytheon Company Combining series sections weighting with withdrawal weighting in SAW transducers
GB2120891A (en) * 1982-05-25 1983-12-07 Plessey Co Plc Interdigital transducer

Families Citing this family (6)

* 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
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 (fr) * 1979-03-21 1980-10-02 Inst Radiotekh Elektron Filtre base sur l'utilisation d'ondes acoustiques de surface
KR900008524B1 (ko) * 1987-08-19 1990-11-24 삼성전자 주식회사 위성수신기의 지대지간섭 제거를 위한 탄성표면파 필터
EP0489195A1 (fr) * 1990-12-05 1992-06-10 SIEMENS MATSUSHITA COMPONENTS GmbH & CO. KG Filtre à fréquence intermédiaire pour l'utilisation quasi parallèle/parallèle de son

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4083021A (en) * 1975-10-17 1978-04-04 Thomson-Csf Transducer for surface wave filters with reduced diffraction
US4321567A (en) * 1980-03-24 1982-03-23 Raytheon Company Combining series sections weighting with withdrawal weighting in SAW transducers
GB2120891A (en) * 1982-05-25 1983-12-07 Plessey Co Plc Interdigital transducer

Also Published As

Publication number Publication date
ES405007A1 (es) 1975-07-01
AU4461772A (en) 1974-01-24
DE2233137A1 (de) 1973-02-08
NL7209887A (fr) 1973-01-24
FR2146823A5 (fr) 1973-03-02
IT961484B (it) 1973-12-10

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees