DE3380658D1 - Surface acoustic wave device - Google Patents

Surface acoustic wave device

Info

Publication number
DE3380658D1
DE3380658D1 DE8383106550T DE3380658T DE3380658D1 DE 3380658 D1 DE3380658 D1 DE 3380658D1 DE 8383106550 T DE8383106550 T DE 8383106550T DE 3380658 T DE3380658 T DE 3380658T DE 3380658 D1 DE3380658 D1 DE 3380658D1
Authority
DE
Germany
Prior art keywords
acoustic wave
surface acoustic
wave device
wave
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
DE8383106550T
Other languages
English (en)
Inventor
Jun Yamada
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of DE3380658D1 publication Critical patent/DE3380658D1/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
    • H03H9/14517—Means for weighting
    • H03H9/1452—Means for weighting by finger overlap length, apodisation

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
DE8383106550T 1982-07-05 1983-07-05 Surface acoustic wave device Expired DE3380658D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57115395A JPS596612A (ja) 1982-07-05 1982-07-05 弾性表面波装置

Publications (1)

Publication Number Publication Date
DE3380658D1 true DE3380658D1 (en) 1989-11-02

Family

ID=14661490

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383106550T Expired DE3380658D1 (en) 1982-07-05 1983-07-05 Surface acoustic wave device

Country Status (4)

Country Link
US (1) US4472653A (de)
EP (1) EP0098579B1 (de)
JP (1) JPS596612A (de)
DE (1) DE3380658D1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157522B (en) * 1984-04-09 1987-08-19 Philips Electronic Associated Electrical filter comprising an acoustic surface wave device, and method of manufacturing such a filter
US4673901A (en) * 1984-10-26 1987-06-16 Siemens Aktiengesellschaft Electrical filter operating with acoustic waves
DE10121251A1 (de) * 2001-04-30 2002-10-31 Epcos Ag Transversalfilter mit verbesserter Fallencharakteristik
DE10135871B4 (de) * 2001-07-24 2012-10-25 Epcos Ag Wandler für Oberflächenwellen mit verbesserter Unterdrückung störender Anregung
KR101024189B1 (ko) * 2006-09-28 2011-03-22 가부시키가이샤 무라타 세이사쿠쇼 탄성파 필터장치
WO2010097710A1 (en) * 2009-02-27 2010-09-02 Dalhousie University High-frequency ultrasound imaging system
JP5999856B2 (ja) * 2015-06-01 2016-09-28 スカイワークスフィルターソリューションズジャパン株式会社 弾性波素子

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1355418A (en) * 1971-05-24 1974-06-05 Mullard Ltd Acoustic surface wave devices

Also Published As

Publication number Publication date
EP0098579A2 (de) 1984-01-18
US4472653A (en) 1984-09-18
EP0098579B1 (de) 1989-09-27
JPS596612A (ja) 1984-01-13
EP0098579A3 (en) 1986-01-02

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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