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WO2008108113A1 - 弾性波フィルタ装置及びデュプレクサ - Google Patents

弾性波フィルタ装置及びデュプレクサ Download PDF

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Publication number
WO2008108113A1
WO2008108113A1 PCT/JP2008/050697 JP2008050697W WO2008108113A1 WO 2008108113 A1 WO2008108113 A1 WO 2008108113A1 JP 2008050697 W JP2008050697 W JP 2008050697W WO 2008108113 A1 WO2008108113 A1 WO 2008108113A1
Authority
WO
WIPO (PCT)
Prior art keywords
band
wave filter
pass
acoustic wave
surface acoustic
Prior art date
Application number
PCT/JP2008/050697
Other languages
English (en)
French (fr)
Inventor
Yuichi Takamine
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 EP08703547A priority Critical patent/EP2117120A1/en
Priority to JP2009502477A priority patent/JPWO2008108113A1/ja
Publication of WO2008108113A1 publication Critical patent/WO2008108113A1/ja
Priority to US12/539,875 priority patent/US20090289740A1/en

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
    • H03H9/70—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
    • H03H9/725—Duplexers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/0023—Balance-unbalance or balance-balance networks
    • H03H9/0028—Balance-unbalance or balance-balance networks using surface acoustic wave devices
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/0023—Balance-unbalance or balance-balance networks
    • H03H9/0028—Balance-unbalance or balance-balance networks using surface acoustic wave devices
    • H03H9/0047—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks
    • H03H9/0052—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks being electrically cascaded
    • H03H9/0061—Balance-unbalance or balance-balance networks 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 devices; Electromechanical resonators
    • H03H9/0023—Balance-unbalance or balance-balance networks
    • H03H9/0028—Balance-unbalance or balance-balance networks using surface acoustic wave devices
    • H03H9/0085—Balance-unbalance or balance-balance networks 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 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
    • H03H9/14576—Transducers whereby only the last fingers have different characteristics with respect to the other fingers, e.g. different shape, thickness or material, split finger
    • H03H9/14582—Transducers whereby only the last fingers have different characteristics with respect to the other fingers, e.g. different shape, thickness or material, split finger the last fingers having a different pitch
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

Abstract

　通過帯域の相対的に高い第２のバンドパスフィルタにおける第１のバンドパスフィルタの通過帯域におけるインピーダンスを高めて減衰量を十分大きくすることができるだけでなく、第１のバンドパスフィルタの通過帯域における挿入損失を改善することが可能なフィルタ装置に用いられる第２のバンドパスフィルタを提供する。 　第２の縦結合共振子型弾性表面波フィルタ部１０の第２のＩＤＴ１０ｂの一端が第１の平衡端子７に、他端が第２の平衡端子８に接続されており、第１，第２の縦結合共振子型弾性表面波フィルタ部９，１０が狭ピッチ電極指部を有し、第１の縦結合共振子型弾性表面波フィルタ部９における第２のＩＤＴ９ｂの狭ピッチ電極指部の電極指の本数が、第２の縦結合共振子型弾性表面波フィルタ部１０の第２のＩＤＴ１０ｂの狭ピッチ電極指部の電極指の本数よりも多くされている、第２のバンドパスフィルタ。
PCT/JP2008/050697 2007-03-01 2008-01-21 弾性波フィルタ装置及びデュプレクサ WO2008108113A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP08703547A EP2117120A1 (en) 2007-03-01 2008-01-21 Elastic wave filter device and duplexer
JP2009502477A JPWO2008108113A1 (ja) 2007-03-01 2008-01-21 弾性波フィルタ装置及びデュプレクサ
US12/539,875 US20090289740A1 (en) 2007-03-01 2009-08-12 Acoustic wave filter apparatus and duplexer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-051686 2007-03-01
JP2007051686 2007-03-01

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/539,875 Continuation US20090289740A1 (en) 2007-03-01 2009-08-12 Acoustic wave filter apparatus and duplexer

Publications (1)

Publication Number Publication Date
WO2008108113A1 true WO2008108113A1 (ja) 2008-09-12

Family

ID=39738009

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/050697 WO2008108113A1 (ja) 2007-03-01 2008-01-21 弾性波フィルタ装置及びデュプレクサ

Country Status (5)

Country Link
US (1) US20090289740A1 (ja)
EP (1) EP2117120A1 (ja)
JP (1) JPWO2008108113A1 (ja)
CN (1) CN101622786A (ja)
WO (1) WO2008108113A1 (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010061496A1 (ja) * 2008-11-25 2010-06-03 株式会社村田製作所 弾性波フィルタ装置
WO2010140445A1 (ja) * 2009-06-04 2010-12-09 株式会社村田製作所 弾性波装置及びデュプレクサ
WO2010150598A1 (ja) * 2009-06-26 2010-12-29 株式会社村田製作所 弾性波装置及びデュプレクサ
JP2013538500A (ja) * 2010-08-12 2013-10-10 エプコス アクチエンゲゼルシャフト 周波数の温度依存性が低減した、弾性波で動作する素子、およびその製造方法
US9130538B2 (en) 2010-05-21 2015-09-08 Epcos Ag SAW filter operating in a balanced/unbalanced manner

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5423928B2 (ja) * 2011-09-01 2014-02-19 株式会社村田製作所 弾性波装置
JP5796604B2 (ja) * 2013-06-13 2015-10-21 株式会社村田製作所 分波装置
JP6516070B2 (ja) * 2016-08-05 2019-05-22 株式会社村田製作所 弾性表面波フィルタ、高周波モジュールおよびマルチプレクサ

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002208832A (ja) * 2001-01-10 2002-07-26 Murata Mfg Co Ltd 弾性表面波装置
JP2002353772A (ja) * 2001-03-23 2002-12-06 Murata Mfg Co Ltd 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
WO2006003787A1 (ja) * 2004-06-30 2006-01-12 Murata Manufacturing Co., Ltd. バランス型弾性波フィルタ及び弾性波フィルタ装置
WO2006025193A1 (ja) * 2004-09-02 2006-03-09 Murata Manufacturing Co., Ltd. バランス型弾性表面波フィルタ

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3849289B2 (ja) * 1997-04-10 2006-11-22 株式会社村田製作所 弾性表面波装置
JP3833569B2 (ja) * 2001-12-21 2006-10-11 富士通メディアデバイス株式会社 分波器及びこれを用いた電子装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002208832A (ja) * 2001-01-10 2002-07-26 Murata Mfg Co Ltd 弾性表面波装置
JP2002353772A (ja) * 2001-03-23 2002-12-06 Murata Mfg Co Ltd 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
WO2006003787A1 (ja) * 2004-06-30 2006-01-12 Murata Manufacturing Co., Ltd. バランス型弾性波フィルタ及び弾性波フィルタ装置
WO2006025193A1 (ja) * 2004-09-02 2006-03-09 Murata Manufacturing Co., Ltd. バランス型弾性表面波フィルタ

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8106725B2 (en) 2008-11-25 2012-01-31 Murata Manufacturing Co., Ltd. Acoustic wave filter device
WO2010061496A1 (ja) * 2008-11-25 2010-06-03 株式会社村田製作所 弾性波フィルタ装置
JP5018894B2 (ja) * 2008-11-25 2012-09-05 株式会社村田製作所 弾性波フィルタ装置
JP5104959B2 (ja) * 2009-06-04 2012-12-19 株式会社村田製作所 弾性波装置及びデュプレクサ
US8319582B2 (en) 2009-06-04 2012-11-27 Murata Manufacturing Co., Ltd. Elastic wave apparatus and duplexer
WO2010140445A1 (ja) * 2009-06-04 2010-12-09 株式会社村田製作所 弾性波装置及びデュプレクサ
WO2010150598A1 (ja) * 2009-06-26 2010-12-29 株式会社村田製作所 弾性波装置及びデュプレクサ
JP5035430B2 (ja) * 2009-06-26 2012-09-26 株式会社村田製作所 弾性波装置及びデュプレクサ
US8305160B2 (en) 2009-06-26 2012-11-06 Murata Manufacturing Co., Ltd. Elastic wave device and duplexer
CN102804601A (zh) * 2009-06-26 2012-11-28 株式会社村田制作所 弹性波装置及双工器
US9130538B2 (en) 2010-05-21 2015-09-08 Epcos Ag SAW filter operating in a balanced/unbalanced manner
JP2013538500A (ja) * 2010-08-12 2013-10-10 エプコス アクチエンゲゼルシャフト 周波数の温度依存性が低減した、弾性波で動作する素子、およびその製造方法
US9160303B2 (en) 2010-08-12 2015-10-13 Epcos Ag Component working with acoustic waves having reduced temperature coefficient of frequencies and method for producing same

Also Published As

Publication number Publication date
US20090289740A1 (en) 2009-11-26
CN101622786A (zh) 2010-01-06
EP2117120A1 (en) 2009-11-11
JPWO2008108113A1 (ja) 2010-06-10

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