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WO2008078496A1 - 弾性波装置 - Google Patents

弾性波装置 Download PDF

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Publication number
WO2008078496A1
WO2008078496A1 PCT/JP2007/072933 JP2007072933W WO2008078496A1 WO 2008078496 A1 WO2008078496 A1 WO 2008078496A1 JP 2007072933 W JP2007072933 W JP 2007072933W WO 2008078496 A1 WO2008078496 A1 WO 2008078496A1
Authority
WO
WIPO (PCT)
Prior art keywords
elastic wave
idt
wave filter
filter unit
wave device
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.)
Ceased
Application number
PCT/JP2007/072933
Other languages
English (en)
French (fr)
Inventor
Minefumi Ouchi
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
Priority to JP2008551003A priority Critical patent/JP4867997B2/ja
Priority to GB0908065A priority patent/GB2457392B/en
Publication of WO2008078496A1 publication Critical patent/WO2008078496A1/ja
Priority to US12/428,715 priority patent/US7746199B2/en
Anticipated expiration legal-status Critical
Ceased 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 elements; Electromechanical resonators
    • H03H9/0023—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output
    • H03H9/0028—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices
    • H03H9/0047—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices having two acoustic tracks
    • H03H9/0052—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices having two acoustic tracks being electrically cascaded
    • H03H9/0057—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices having two acoustic tracks being electrically cascaded the balanced terminals being on the same side of the tracks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/0023—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output
    • H03H9/0028—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices
    • H03H9/0047—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices having two acoustic tracks
    • H03H9/0052—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices having two acoustic tracks being electrically cascaded
    • H03H9/0061—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices having two acoustic tracks being electrically cascaded the balanced terminals being on opposite sides of the tracks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/0023—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output
    • H03H9/0028—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices
    • H03H9/0085—Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output using surface acoustic wave devices having four acoustic tracks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/0222—Details of interface-acoustic, boundary, pseudo-acoustic or Stonely wave devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; 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
    • H03H9/14588—Horizontally-split transducers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; 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 elements; 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)

Abstract

　小型を進めることができ、しかも通過帯域高域側における阻止域の減衰量の拡大を図ることができ、かつ通過帯域高域側におけるフィルタ特性の急峻性を高め得る弾性波装置を提供する。 　圧電基板上に形成された３ＩＤＴ型の第１，第２の弾性波フィルタ部３，４を有し、第１，第２の弾性波フィルタ部３，４が第２のＩＤＴ同士及び第３のＩＤＴ同士を電気的に接続することにより縦続接続されており、第１の弾性波フィルタ部の第１のＩＤＴ部１１に弾性波共振子５が接続されており、第１の弾性波フィルタ部３の第１のＩＤＴ１１の電極指の本数をＮＡ、第２，第３のＩＤＴ１２，１３の電極指の本数をＮＢとし、第１，第２の弾性波フィルタ部の反射器１４，１５，２４，２５のストップバンドの終点周波数をｆＢ、弾性波共振子５の反共振周波数をｆａとしたときに、２．６≦ＮＡ／ＮＢ≦３．５かつ０．９９５≦ｆＢ／ｆａ≦１．０１０とされている、弾性波装置１。
PCT/JP2007/072933 2006-12-25 2007-11-28 弾性波装置 Ceased WO2008078496A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2008551003A JP4867997B2 (ja) 2006-12-25 2007-11-28 弾性波装置
GB0908065A GB2457392B (en) 2006-12-25 2007-11-28 Acoustic wave device
US12/428,715 US7746199B2 (en) 2006-12-25 2009-04-23 Acoustic wave device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006347576 2006-12-25
JP2006-347576 2006-12-25

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/428,715 Continuation US7746199B2 (en) 2006-12-25 2009-04-23 Acoustic wave device

Publications (1)

Publication Number Publication Date
WO2008078496A1 true WO2008078496A1 (ja) 2008-07-03

Family

ID=39562289

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2007/072933 Ceased WO2008078496A1 (ja) 2006-12-25 2007-11-28 弾性波装置

Country Status (4)

Country Link
US (1) US7746199B2 (ja)
JP (1) JP4867997B2 (ja)
GB (1) GB2457392B (ja)
WO (1) WO2008078496A1 (ja)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8283997B2 (en) 2008-11-04 2012-10-09 Murata Manufacturing Co., Ltd. Elastic-wave filter device
JP2014160888A (ja) * 2013-02-19 2014-09-04 Panasonic Corp 弾性波共振器とこれを用いた弾性波フィルタおよびアンテナ共用器
WO2022050210A1 (ja) * 2020-09-02 2022-03-10 株式会社村田製作所 弾性波フィルタおよびマルチプレクサ

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8447700B2 (en) * 2005-10-11 2013-05-21 Amazon Technologies, Inc. Transaction authorization service
JP2011087282A (ja) * 2009-09-15 2011-04-28 Murata Mfg Co Ltd 弾性境界波フィルタ及びそれを備える分波器
WO2021246447A1 (ja) * 2020-06-04 2021-12-09 株式会社村田製作所 弾性波装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0440705A (ja) * 1990-06-06 1992-02-12 Murata Mfg Co Ltd 縦型２重モード弾性表面波フィルタ
JPH05267990A (ja) * 1991-08-21 1993-10-15 Toyo Commun Equip Co Ltd 縦結合二重モ−ドｓａｗフィルタ
JP2002084165A (ja) * 2000-06-27 2002-03-22 Murata Mfg Co Ltd 弾性表面波装置
JP2002185284A (ja) * 2000-12-15 2002-06-28 Sanyo Electric Co Ltd 弾性表面波フィルタ
JP2003249842A (ja) * 2001-12-21 2003-09-05 Fujitsu Media Device Kk 分波器及びこれを用いた電子装置
JP2003309448A (ja) * 2002-02-15 2003-10-31 Murata Mfg Co Ltd 弾性表面波装置、通信装置
WO2006067884A1 (ja) * 2004-12-20 2006-06-29 Murata Manufacturing Co., Ltd. バランス型弾性波フィルタ装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10335973A (ja) * 1997-05-30 1998-12-18 Toyo Commun Equip Co Ltd 縦結合二重モードｓａｗフィルタ
JP3915322B2 (ja) 1999-06-03 2007-05-16 エプソントヨコム株式会社 弾性表面波フィルタ
JP4415360B2 (ja) * 2000-01-28 2010-02-17 エプソントヨコム株式会社 縦結合弾性表面波フィルタ
JP3391347B2 (ja) * 2000-06-26 2003-03-31 株式会社村田製作所 縦結合共振子型弾性表面波フィルタ

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0440705A (ja) * 1990-06-06 1992-02-12 Murata Mfg Co Ltd 縦型２重モード弾性表面波フィルタ
JPH05267990A (ja) * 1991-08-21 1993-10-15 Toyo Commun Equip Co Ltd 縦結合二重モ−ドｓａｗフィルタ
JP2002084165A (ja) * 2000-06-27 2002-03-22 Murata Mfg Co Ltd 弾性表面波装置
JP2002185284A (ja) * 2000-12-15 2002-06-28 Sanyo Electric Co Ltd 弾性表面波フィルタ
JP2003249842A (ja) * 2001-12-21 2003-09-05 Fujitsu Media Device Kk 分波器及びこれを用いた電子装置
JP2003309448A (ja) * 2002-02-15 2003-10-31 Murata Mfg Co Ltd 弾性表面波装置、通信装置
WO2006067884A1 (ja) * 2004-12-20 2006-06-29 Murata Manufacturing Co., Ltd. バランス型弾性波フィルタ装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8283997B2 (en) 2008-11-04 2012-10-09 Murata Manufacturing Co., Ltd. Elastic-wave filter device
JP5051484B2 (ja) * 2008-11-04 2012-10-17 株式会社村田製作所 弾性波フィルタ装置
JP2014160888A (ja) * 2013-02-19 2014-09-04 Panasonic Corp 弾性波共振器とこれを用いた弾性波フィルタおよびアンテナ共用器
WO2022050210A1 (ja) * 2020-09-02 2022-03-10 株式会社村田製作所 弾性波フィルタおよびマルチプレクサ

Also Published As

Publication number Publication date
JP4867997B2 (ja) 2012-02-01
JPWO2008078496A1 (ja) 2010-04-22
US20090201105A1 (en) 2009-08-13
GB0908065D0 (en) 2009-06-24
GB2457392B (en) 2011-07-20
GB2457392A (en) 2009-08-19
US7746199B2 (en) 2010-06-29

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