DE69620135D1 - Akustisches Oberflächenwellenresonatorfilter - Google Patents

Akustisches Oberflächenwellenresonatorfilter

Info

Publication number
DE69620135D1
DE69620135D1 DE69620135T DE69620135T DE69620135D1 DE 69620135 D1 DE69620135 D1 DE 69620135D1 DE 69620135 T DE69620135 T DE 69620135T DE 69620135 T DE69620135 T DE 69620135T DE 69620135 D1 DE69620135 D1 DE 69620135D1
Authority
DE
Germany
Prior art keywords
surface wave
wave resonator
resonator filter
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 - Lifetime
Application number
DE69620135T
Other languages
English (en)
Other versions
DE69620135T2 (de
Inventor
Toru Kurahashi
Kazunobu Shimoe
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.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co 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 Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Application granted granted Critical
Publication of DE69620135D1 publication Critical patent/DE69620135D1/de
Publication of DE69620135T2 publication Critical patent/DE69620135T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H03H9/6433—Coupled resonator filters
    • 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
    • H03H9/6433—Coupled resonator filters
    • H03H9/644—Coupled resonator filters having two acoustic tracks
    • H03H9/6456—Coupled resonator filters having two acoustic tracks being electrically coupled
    • H03H9/6469—Coupled resonator filters having two acoustic tracks being electrically coupled via two connecting electrodes

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
DE69620135T 1995-12-27 1996-12-20 Akustisches Oberflächenwellenresonatorfilter Expired - Lifetime DE69620135T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP07340583A JP3077052B2 (ja) 1995-12-27 1995-12-27 弾性表面波共振子フィルタ装置

Publications (2)

Publication Number Publication Date
DE69620135D1 true DE69620135D1 (de) 2002-05-02
DE69620135T2 DE69620135T2 (de) 2002-09-26

Family

ID=18338392

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69620135T Expired - Lifetime DE69620135T2 (de) 1995-12-27 1996-12-20 Akustisches Oberflächenwellenresonatorfilter

Country Status (5)

Country Link
US (1) US5818146A (de)
EP (1) EP0782256B1 (de)
JP (1) JP3077052B2 (de)
DE (1) DE69620135T2 (de)
NO (1) NO965559L (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9622654D0 (en) * 1996-10-31 1997-01-08 Flowers James E Filters
JPH11330895A (ja) * 1998-05-14 1999-11-30 Fujitsu Ltd 弾性表面波装置
JP3289674B2 (ja) 1998-05-21 2002-06-10 株式会社村田製作所 表面波フィルタ装置、共用器、通信機装置
DE10009517A1 (de) * 2000-02-29 2001-08-30 Epcos Ag Interdigitalwandler mit verteilter Anregung
JP3432492B2 (ja) * 2000-09-28 2003-08-04 富士通株式会社 弾性表面波共振器及びこれを用いた弾性表面波フィルタ
JP3414384B2 (ja) * 2001-01-12 2003-06-09 株式会社村田製作所 弾性表面波フィルタ、およびそれを用いた通信機装置
JP3945363B2 (ja) * 2001-10-12 2007-07-18 株式会社村田製作所 弾性表面波装置
DE102009038148B4 (de) * 2009-08-20 2014-04-03 Continental Automotive Gmbh Triplexer für ein Multiband-Antennenmodul eines Fahrzeugs
GB2512091B (en) * 2013-03-20 2021-01-06 Alison Microwave Ltd Improvements in and relating to filters
JP6441590B2 (ja) * 2014-05-23 2018-12-19 太陽誘電株式会社 弾性波デバイス

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4254387A (en) * 1977-10-06 1981-03-03 U.S. Philips Corporation Acoustic wave devices
US4166257A (en) * 1977-10-19 1979-08-28 Motorola, Inc. Capacitively weighted surface acoustic wave device
JPS5573123A (en) * 1978-11-27 1980-06-02 Toshiba Corp Elastic surface wave filter
JPS5610725A (en) * 1979-07-09 1981-02-03 Murata Mfg Co Ltd Elastic surface wave device
US5521565A (en) * 1988-09-28 1996-05-28 Siemens Aktiengesellschaft Surface wave interdigital transducer and surface wave filter with symmetric or predeterminable asymmetric transfer characteristic between input and output
US5223762A (en) * 1990-12-27 1993-06-29 Murata Manufacturing Co., Ltd. Surface acoustic wave filter
DE69323163T2 (de) * 1992-12-01 1999-06-02 Japan Radio Co. Ltd., Mitaka, Tokio/Tokyo Akustischer Oberflächenwellenfilter und mobiles Kommunikationssystem mit solchem Filter
US5528206A (en) * 1994-11-23 1996-06-18 Murata Manufacturing Co., Ltd. Surface acoustic wave filter with attenuated spurious emissions
JPH08265087A (ja) * 1995-03-22 1996-10-11 Mitsubishi Electric Corp 弾性表面波フィルタ
GB2306821B (en) * 1995-11-03 2000-05-31 Advanced Saw Prod Sa Electro-acoustic device

Also Published As

Publication number Publication date
JPH09181566A (ja) 1997-07-11
EP0782256A3 (de) 1998-02-04
DE69620135T2 (de) 2002-09-26
JP3077052B2 (ja) 2000-08-14
EP0782256A2 (de) 1997-07-02
EP0782256B1 (de) 2002-03-27
NO965559D0 (no) 1996-12-23
US5818146A (en) 1998-10-06
NO965559L (no) 1997-06-30

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition