DE69422680T2 - Akustische Oberflächenwellenfilteranordnung - Google Patents

Akustische Oberflächenwellenfilteranordnung

Info

Publication number
DE69422680T2
DE69422680T2 DE1994622680 DE69422680T DE69422680T2 DE 69422680 T2 DE69422680 T2 DE 69422680T2 DE 1994622680 DE1994622680 DE 1994622680 DE 69422680 T DE69422680 T DE 69422680T DE 69422680 T2 DE69422680 T2 DE 69422680T2
Authority
DE
Germany
Prior art keywords
wave filter
surface wave
filter arrangement
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 - Fee Related
Application number
DE1994622680
Other languages
English (en)
Other versions
DE69422680D1 (de
Inventor
Masahiko Sugiyama
Yasufumi Horio
Masatsugu Oshima
Kenji Suzuki
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.)
NGK Insulators Ltd
Original Assignee
NGK Insulators 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
Priority claimed from JP25840293A external-priority patent/JPH07115346A/ja
Priority claimed from JP22195394A external-priority patent/JPH0888534A/ja
Application filed by NGK Insulators Ltd filed Critical NGK Insulators Ltd
Application granted granted Critical
Publication of DE69422680D1 publication Critical patent/DE69422680D1/de
Publication of DE69422680T2 publication Critical patent/DE69422680T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H03H9/14502—Surface acoustic wave [SAW] transducers for a particular purpose
    • H03H9/14505—Unidirectional SAW 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
    • H03H9/46—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

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
DE1994622680 1993-10-15 1994-10-14 Akustische Oberflächenwellenfilteranordnung Expired - Fee Related DE69422680T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP25840293A JPH07115346A (ja) 1993-10-15 1993-10-15 弾性表面波フィルタ装置
JP32867593 1993-12-24
JP22017794 1994-09-14
JP22195394A JPH0888534A (ja) 1994-09-16 1994-09-16 弾性表面波フィルタ装置

Publications (2)

Publication Number Publication Date
DE69422680D1 DE69422680D1 (de) 2000-02-24
DE69422680T2 true DE69422680T2 (de) 2000-06-21

Family

ID=27476952

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1994622680 Expired - Fee Related DE69422680T2 (de) 1993-10-15 1994-10-14 Akustische Oberflächenwellenfilteranordnung

Country Status (2)

Country Link
EP (1) EP0649219B1 (de)
DE (1) DE69422680T2 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110832774B (zh) * 2017-07-27 2023-07-21 京瓷株式会社 弹性波元件

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4004254A (en) * 1975-04-03 1977-01-18 Zenith Radio Corporation Swif with side lobe compensation barrier
JPS6423612A (en) * 1987-07-20 1989-01-26 Hitachi Ltd Elastic surface wave device
US5202652A (en) * 1989-10-13 1993-04-13 Hitachi, Ltd. Surface acoustic wave filter device formed on a plurality of piezoelectric substrates
JP3363937B2 (ja) * 1992-03-26 2003-01-08 日本碍子株式会社 弾性表面波フィルタ装置

Also Published As

Publication number Publication date
DE69422680D1 (de) 2000-02-24
EP0649219B1 (de) 2000-01-19
EP0649219A1 (de) 1995-04-19

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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