DE3368158D1 - Surface acoustic wave device - Google Patents

Surface acoustic wave device

Info

Publication number
DE3368158D1
DE3368158D1 DE8383104903T DE3368158T DE3368158D1 DE 3368158 D1 DE3368158 D1 DE 3368158D1 DE 8383104903 T DE8383104903 T DE 8383104903T DE 3368158 T DE3368158 T DE 3368158T DE 3368158 D1 DE3368158 D1 DE 3368158D1
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
DE8383104903T
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=13791830&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3368158(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Application granted granted Critical
Publication of DE3368158D1 publication Critical patent/DE3368158D1/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
    • H03H9/14552—Transducers of particular shape or position comprising split fingers
    • 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
    • H03H9/02779—Continuous surface reflective 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
    • H03H9/70—Multiple-port networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
    • H03H9/72—Networks using surface acoustic waves
    • 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)
DE8383104903T 1982-05-19 1983-05-18 Surface acoustic wave device Expired DE3368158D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57083067A JPS58200618A (ja) 1982-05-19 1982-05-19 弾性表面波装置

Publications (1)

Publication Number Publication Date
DE3368158D1 true DE3368158D1 (en) 1987-01-15

Family

ID=13791830

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8383104903T Expired DE3368158D1 (en) 1982-05-19 1983-05-18 Surface acoustic wave device

Country Status (4)

Country Link
US (1) US4558364A (de)
EP (1) EP0094683B1 (de)
JP (1) JPS58200618A (de)
DE (1) DE3368158D1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR900008524B1 (ko) * 1987-08-19 1990-11-24 삼성전자 주식회사 위성수신기의 지대지간섭 제거를 위한 탄성표면파 필터
JP2944287B2 (ja) * 1991-12-27 1999-08-30 日本電気株式会社 弾性表面波フィルタ
JPH0750548A (ja) * 1993-05-31 1995-02-21 Canon Inc 弾性表面波素子
US5793147A (en) * 1994-05-30 1998-08-11 Murata Manufacturing Co., Ltd. Surface wave resonator having single component including a plurality of resonant units
DE19638399C3 (de) * 1996-09-19 2002-04-18 Epcos Ag Oberflächenwellenfilter
JP2982864B2 (ja) * 1996-10-14 1999-11-29 日本電気株式会社 弾性表面波装置
CN101316099B (zh) * 2008-07-04 2010-06-16 无锡市好达电子有限公司 双通道声表面波滤波器

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1381912A (en) * 1972-03-30 1975-01-29 Standard Telephones Cables Ltd Acoustic wave devices
JPS514933A (ja) * 1974-07-02 1976-01-16 Tokyo Shibaura Electric Co Hyomenhasochi
US4006290A (en) * 1974-08-12 1977-02-01 Gte Sylvania Incorporated Surface wave frequency selective device
JPS5422435U (de) 1977-07-14 1979-02-14
JPS5913473B2 (ja) * 1977-07-21 1984-03-29 株式会社岩倉組 軽量成形体の製造方法
GB2009546A (en) * 1977-11-16 1979-06-13 Plessey Co Ltd Television receiver IF and detector arrangement
JPS5773514A (en) * 1980-10-25 1982-05-08 Fujitsu Ltd Surface acoustic wave filter
JPS5857813A (ja) * 1981-10-02 1983-04-06 Hitachi Ltd 振幅周波数特性の可変な弾性表面波装置

Also Published As

Publication number Publication date
EP0094683A3 (en) 1984-12-19
EP0094683B1 (de) 1986-12-03
EP0094683A2 (de) 1983-11-23
JPS58200618A (ja) 1983-11-22
US4558364A (en) 1985-12-10

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Legal Events

Date Code Title Description
8363 Opposition against the patent
8365 Fully valid after opposition proceedings