DE3377256D1 - Acoustic surface wave device - Google Patents

Acoustic surface wave device

Info

Publication number
DE3377256D1
DE3377256D1 DE8383200550T DE3377256T DE3377256D1 DE 3377256 D1 DE3377256 D1 DE 3377256D1 DE 8383200550 T DE8383200550 T DE 8383200550T DE 3377256 T DE3377256 T DE 3377256T DE 3377256 D1 DE3377256 D1 DE 3377256D1
Authority
DE
Germany
Prior art keywords
wave device
surface wave
acoustic surface
acoustic
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
DE8383200550T
Other languages
English (en)
Inventor
John Schofield
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 Electronics UK Ltd
Koninklijke Philips NV
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Electronic and Associated Industries Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Electronic and Associated Industries Ltd
Application granted granted Critical
Publication of DE3377256D1 publication Critical patent/DE3377256D1/de
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
    • H03H9/02—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
    • H03H9/14547—Fan shaped; Tilted; Shifted; Slanted; Tapered; Arched; Stepped finger 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
    • H03H9/02535—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 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
    • H03H9/14517—Means for weighting
    • H03H9/1452—Means for weighting by finger overlap length, apodisation
    • 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
    • H03H9/14573—Arrow type 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
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02637—Details concerning reflective or coupling arrays
    • 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
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02992—Details of bus bars, contact pads or other electrical connections for finger electrodes

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
DE8383200550T 1982-04-19 1983-04-18 Acoustic surface wave device Expired DE3377256D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08211248A GB2120890B (en) 1982-04-19 1982-04-19 Acoustic surface wave device

Publications (1)

Publication Number Publication Date
DE3377256D1 true DE3377256D1 (en) 1988-08-04

Family

ID=10529770

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383200550T Expired DE3377256D1 (en) 1982-04-19 1983-04-18 Acoustic surface wave device

Country Status (5)

Country Link
US (1) US4486724A (de)
EP (1) EP0092290B1 (de)
JP (1) JPS58190117A (de)
DE (1) DE3377256D1 (de)
GB (1) GB2120890B (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3234955A1 (de) * 1982-09-21 1984-03-22 Siemens AG, 1000 Berlin und 8000 München Oberflaechenwellenfilter, sowie verfahren zur herstellung des oberflaechenwellenfilters
US4814658A (en) * 1986-11-10 1989-03-21 Northern Telecom Limited SAW device with continuous finger pattern
JPS63266913A (ja) * 1987-04-22 1988-11-04 Showa Electric Wire & Cable Co Ltd 弾性表面波装置
JPS63266912A (ja) * 1987-04-22 1988-11-04 Showa Electric Wire & Cable Co Ltd 弾性表面波装置
DE3731309A1 (de) * 1987-09-17 1989-03-30 Siemens Ag Oberflaechenwellenanordnung mit konversionsstruktur zur vermeidung unerwuenschter reflektierter wellen
JPH04162815A (ja) * 1990-10-25 1992-06-08 Murata Mfg Co Ltd 弾性表面波フィルタ
JPH07212177A (ja) * 1994-01-14 1995-08-11 Murata Mfg Co Ltd 表面波フィルタ
US5831492A (en) * 1995-09-15 1998-11-03 Sawtek Inc. Weighted tapered spudt saw device
US5818310A (en) * 1996-08-27 1998-10-06 Sawtek Inc. Series-block and line-width weighted saw filter device
JP3487772B2 (ja) * 1998-03-11 2004-01-19 富士通株式会社 弾性表面波フィルタ
US6017245A (en) * 1998-08-19 2000-01-25 Amphenol Corporation Stamped backshell assembly with integral front shield and rear cable clamp
KR100451081B1 (ko) * 2002-05-15 2004-10-02 엘지이노텍 주식회사 표면 탄성파 필터의 잡음 방지 구조
FR2974691B1 (fr) * 2011-04-28 2019-08-30 Commissariat A L'energie Atomique Et Aux Energies Alternatives Dispositif electromecanique a ondes acoustiques comprenant une zone de transduction et une cavite etendue
CA2921139A1 (en) 2013-09-05 2015-03-12 Airbus Operations Limited Landing gear drive system flexible interface
WO2015033125A1 (en) * 2013-09-05 2015-03-12 Airbus Operations Limited Landing gear drive system flexible interface
CN114611533B (zh) * 2022-01-28 2022-12-06 金陵科技学院 叉指单侧倾斜加权型声表面波式Morlet小波处理器

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7810674A (nl) * 1977-12-21 1979-06-25 Tektronix Inc Akoestische oppervlakgolfinrichting.
US4205285A (en) * 1978-11-03 1980-05-27 Gte Laboratories Incorporated Acoustic surface wave device
JPS5676621A (en) * 1979-11-29 1981-06-24 Fujitsu Ltd Elastic surface wave filter
JPS56158519A (en) * 1980-05-10 1981-12-07 Maruyasu Kogyo Kk Elastic surface wave device
US4333065A (en) * 1980-10-09 1982-06-01 Zenith Radio Corporation Low reflectivity apodized surface acoustic transducer with means to prevent wavefront distortion
GB2090093A (en) * 1980-12-19 1982-06-30 Philips Electronic Associated Acoustic wave devices
GB2132048A (en) * 1982-09-15 1984-06-27 Philips Electronic Associated Acoustic surface wave device

Also Published As

Publication number Publication date
GB2120890B (en) 1985-11-27
US4486724A (en) 1984-12-04
JPS58190117A (ja) 1983-11-07
JPH0410765B2 (de) 1992-02-26
EP0092290B1 (de) 1988-06-29
GB2120890A (en) 1983-12-07
EP0092290A3 (en) 1985-09-11
EP0092290A2 (de) 1983-10-26

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee