DE69316786D1 - Elastische Oberflächenwellenfilter - Google Patents

Elastische Oberflächenwellenfilter

Info

Publication number
DE69316786D1
DE69316786D1 DE69316786T DE69316786T DE69316786D1 DE 69316786 D1 DE69316786 D1 DE 69316786D1 DE 69316786 T DE69316786 T DE 69316786T DE 69316786 T DE69316786 T DE 69316786T DE 69316786 D1 DE69316786 D1 DE 69316786D1
Authority
DE
Germany
Prior art keywords
wave filter
surface wave
elastic surface
elastic
filter
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
DE69316786T
Other languages
English (en)
Other versions
DE69316786T2 (de
Inventor
Shunichi Seki
Kazuo Eda
Yutaka Taguchi
Keiji Onishi
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.)
Panasonic Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Application granted granted Critical
Publication of DE69316786D1 publication Critical patent/DE69316786D1/de
Publication of DE69316786T2 publication Critical patent/DE69316786T2/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
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02543—Characteristics of substrate, e.g. cutting angles
    • H03H9/02559—Characteristics of substrate, e.g. cutting angles of lithium niobate or lithium-tantalate substrates
    • 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
    • H03H9/1455—Transducers of particular shape or position constituted of N parallel or series 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)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
DE69316786T 1992-05-14 1993-05-13 Elastische Oberflächenwellenfilter Expired - Lifetime DE69316786T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4121607A JPH05315886A (ja) 1992-05-14 1992-05-14 弾性表面波フィルタ

Publications (2)

Publication Number Publication Date
DE69316786D1 true DE69316786D1 (de) 1998-03-12
DE69316786T2 DE69316786T2 (de) 1998-05-28

Family

ID=14815445

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69316786T Expired - Lifetime DE69316786T2 (de) 1992-05-14 1993-05-13 Elastische Oberflächenwellenfilter

Country Status (4)

Country Link
US (1) US5485052A (de)
EP (1) EP0569977B1 (de)
JP (1) JPH05315886A (de)
DE (1) DE69316786T2 (de)

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07307640A (ja) * 1994-03-17 1995-11-21 Fujitsu Ltd 弾性表面波デバイス
JP3218855B2 (ja) * 1994-05-11 2001-10-15 株式会社村田製作所 弾性表面波装置
JPH08204498A (ja) * 1995-01-24 1996-08-09 Murata Mfg Co Ltd 端面反射型表面波装置
DE763889T1 (de) * 1995-03-15 1997-09-04 Japan Energy Corp Akustisches oberflächenwellenfilter
JPH08265087A (ja) * 1995-03-22 1996-10-11 Mitsubishi Electric Corp 弾性表面波フィルタ
EP0746095B1 (de) * 1995-05-29 2007-02-14 SANYO ELECTRIC Co., Ltd. Akustischer Oberflächenwellenfilter
WO1997000556A1 (en) * 1995-06-16 1997-01-03 Northern Telecom Limited Cascaded surface wave device filters
EP0757438B1 (de) * 1995-07-25 2001-08-16 Murata Manufacturing Co., Ltd. Akustische Oberflächenwellenanordnung
DE19535538A1 (de) * 1995-09-25 1997-03-27 Siemens Ag Mit akustischen Oberflächenwellen arbeitendes Bandpaßfilter-OFW-Bandpaßfilter
EP0782255B1 (de) * 1995-12-28 2002-03-27 Murata Manufacturing Co., Ltd. Akustisches Oberflächenwellenresonatorfilter mit longitudinaler Kopplung
JPH09205342A (ja) * 1996-01-26 1997-08-05 Matsushita Electric Ind Co Ltd 弾性表面波フィルタ
JP3239064B2 (ja) * 1996-05-28 2001-12-17 富士通株式会社 弾性表面波装置
US6003370A (en) * 1996-05-30 1999-12-21 Minolta Co., Ltd. Elastic surface wave gyroscope
DE19638399C3 (de) * 1996-09-19 2002-04-18 Epcos Ag Oberflächenwellenfilter
JP3224202B2 (ja) * 1996-11-28 2001-10-29 富士通株式会社 弾性表面波装置
JPH10190394A (ja) * 1996-12-25 1998-07-21 Murata Mfg Co Ltd 弾性表面波共振子フィルタ
US6160339A (en) * 1997-07-17 2000-12-12 Seiko Epson Corporation Two-port saw resonator
JP3280617B2 (ja) * 1998-02-27 2002-05-13 東洋通信機株式会社 広帯域表面波フィルタ
JP2001036378A (ja) 1999-07-16 2001-02-09 Mitsubishi Electric Corp 弾性波装置
KR20010101541A (ko) 1999-11-16 2001-11-14 다니구찌 이찌로오, 기타오카 다카시 탄성파 장치
JP2001196898A (ja) * 2000-01-05 2001-07-19 Fujitsu Ltd 弾性表面波フィルタ
US6417746B1 (en) 2000-04-07 2002-07-09 Conexant Systems, Inc. Longitudinally-coupled saw filter with enhanced frequency selectivity
JP3743329B2 (ja) 2001-03-23 2006-02-08 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弾性表面波装置、通信機装置
JP3820954B2 (ja) * 2001-10-12 2006-09-13 株式会社村田製作所 弾性表面波装置、通信装置
US7002281B2 (en) * 2003-07-16 2006-02-21 Biode Inc. Multi-reflective acoustic wave device
JP2006295434A (ja) * 2005-04-08 2006-10-26 Epson Toyocom Corp 弾性表面波フィルタ
KR100697764B1 (ko) * 2005-10-26 2007-03-22 후지쓰 메디아 데바이스 가부시키가이샤 탄성 표면파 장치

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1132211A (en) * 1978-02-23 1982-09-21 Martin Redwood Acoustic wave devices
JPS57202114A (en) * 1981-06-05 1982-12-10 Hitachi Ltd Band pass filter
JPH0714133B2 (ja) * 1985-04-03 1995-02-15 東洋通信機株式会社 Ｉｄｔ励振型２ポート共振器
JPH071859B2 (ja) * 1988-03-11 1995-01-11 国際電気株式会社 弾性表面波フィルタ
DE3942148A1 (de) * 1989-12-20 1991-06-27 Siemens Ag Oberflaechenwellen-reflektorfilter
CA2038474C (en) * 1990-03-19 1994-09-20 Yoshio Satoh Surface-acoustic-waver filter having a plurality of electrodes
JPH03296316A (ja) * 1990-04-13 1991-12-27 Nikko Kyodo Co Ltd 弾性表面波共振子フィルタ
US5212420A (en) * 1991-09-03 1993-05-18 Motorola, Inc. Method and apparatus for surface acoustic wave reflector grating
DE4214122C2 (de) * 1992-04-29 2001-02-22 Siemens Ag Zweispur-Oberflächenwellenanordnung mit verbesserter Selektionseigenschaft
US5392013A (en) * 1992-07-17 1995-02-21 Nec Corporation Surface acoustic wave filter capable of widening a bandwidth

Also Published As

Publication number Publication date
DE69316786T2 (de) 1998-05-28
US5485052A (en) 1996-01-16
EP0569977B1 (de) 1998-02-04
JPH05315886A (ja) 1993-11-26
EP0569977A1 (de) 1993-11-18

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: PANASONIC CORP., KADOMA, OSAKA, JP