WO2008149619A1 - 弾性波フィルタ装置 - Google Patents

弾性波フィルタ装置 Download PDF

Info

Publication number
WO2008149619A1
WO2008149619A1 PCT/JP2008/058040 JP2008058040W WO2008149619A1 WO 2008149619 A1 WO2008149619 A1 WO 2008149619A1 JP 2008058040 W JP2008058040 W JP 2008058040W WO 2008149619 A1 WO2008149619 A1 WO 2008149619A1
Authority
WO
WIPO (PCT)
Prior art keywords
elastic wave
wave filter
divided
idt
filter section
Prior art date
Application number
PCT/JP2008/058040
Other languages
English (en)
French (fr)
Inventor
Seiichi Takahara
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 CN200880018123A priority Critical patent/CN101682311A/zh
Priority to JP2009517748A priority patent/JPWO2008149619A1/ja
Publication of WO2008149619A1 publication Critical patent/WO2008149619A1/ja
Priority to US12/627,165 priority patent/US8102225B2/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
    • H03H9/0023—Balance-unbalance or balance-balance networks
    • H03H9/0028—Balance-unbalance or balance-balance networks using surface acoustic wave devices
    • H03H9/0033—Balance-unbalance or balance-balance networks using surface acoustic wave devices having one acoustic track only
    • H03H9/0038—Balance-unbalance or balance-balance networks using surface acoustic wave devices having one acoustic track only the balanced terminals being on the same side of the track
    • 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
    • H03H9/0057—Balance-unbalance or balance-balance networks 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 devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02685—Grating lines having particular arrangements
    • H03H9/0274—Intra-transducers grating lines
    • H03H9/02748—Dog-legged reflectors
    • 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
    • H03H9/14588—Horizontally-split transducers
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic 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
    • H03H9/14591—Vertically-split 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
    • H03H9/6433—Coupled resonator filters
    • H03H9/6436—Coupled resonator filters having one acoustic track only
    • 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

Abstract

　平衡－不平衡変換機能を有し、入出力インピーダンス比が約１であり、小型化を進めることが可能である弾性波フィルタ装置を提供する。 　不平衡端子３に第１の弾性波フィルタ部６の第２のＩＤＴ１２が接続されており、第２のＩＤＴ１２が、交叉幅方向に分割されて設けられており、かつ不平衡端子３とグラウンド電位との間において直列に接続された第１，第２の分割ＩＤＴ部１２ａ，１２ｂを有し、第１の弾性波フィルタ部６に接続された第２の弾性波フィルタ部７の第５のＩＤＴが弾性波伝搬方向に分割された第１，第２の分割ＩＤＴ部２２ａ，２２ｂを有し、第１，第２の分割ＩＤＴ部２２ａ，２２ｂがそれぞれ第１，第２の平衡端子４，５に接続されている、弾性波フィルタ装置１。
PCT/JP2008/058040 2007-06-06 2008-04-25 弾性波フィルタ装置 WO2008149619A1 (ja)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN200880018123A CN101682311A (zh) 2007-06-06 2008-04-25 弹性波滤波装置
JP2009517748A JPWO2008149619A1 (ja) 2007-06-06 2008-04-25 弾性波フィルタ装置
US12/627,165 US8102225B2 (en) 2007-06-06 2009-11-30 Acoustic wave filter device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007150061 2007-06-06
JP2007-150061 2007-06-06

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/627,165 Continuation US8102225B2 (en) 2007-06-06 2009-11-30 Acoustic wave filter device

Publications (1)

Publication Number Publication Date
WO2008149619A1 true WO2008149619A1 (ja) 2008-12-11

Family

ID=40093445

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/058040 WO2008149619A1 (ja) 2007-06-06 2008-04-25 弾性波フィルタ装置

Country Status (4)

Country Link
US (1) US8102225B2 (ja)
JP (1) JPWO2008149619A1 (ja)
CN (1) CN101682311A (ja)
WO (1) WO2008149619A1 (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2013141151A1 (ja) * 2012-03-22 2015-08-03 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

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107251427B (zh) * 2015-03-16 2020-12-18 株式会社村田制作所 弹性波装置及其制造方法
CN108886351B (zh) * 2016-03-31 2022-05-27 京瓷株式会社 弹性波元件以及通信装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03129915A (ja) * 1989-10-16 1991-06-03 Kokusai Electric Co Ltd 弾性表面波共振子
JPH1197966A (ja) * 1997-09-22 1999-04-09 Tdk Corp 弾性表面波フィルタ
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
WO2006068087A1 (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
JP2006229487A (ja) * 2005-02-16 2006-08-31 Murata Mfg Co Ltd バランス型弾性波フィルタ装置

Family Cites Families (16)

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US3600710A (en) * 1968-08-12 1971-08-17 Zenith Radio Corp Acoustic surface wave filter
DE19724259C2 (de) * 1997-06-09 2002-11-14 Epcos Ag Dualmode-Oberflächenwellenfilter
DE19938748B4 (de) * 1999-08-16 2007-02-01 Epcos Ag Dualmode-Oberflächenwellen-Filter mit verbesserter Symmetrie und erhöhter Sperrdämpfung
TW498614B (en) * 1999-12-09 2002-08-11 Matsushita Electric Ind Co Ltd Elastic surface wave device and communications equipment using the elastic surface wave device
DE10013861A1 (de) * 2000-03-21 2001-09-27 Epcos Ag Dualmode-Oberflächenwellenfilter mit verbesserter Symmetrie und erhöhter Sperrdämpfung
JP2001292050A (ja) * 2000-04-10 2001-10-19 Matsushita Electric Ind Co Ltd 弾性表面波フィルタ
TW483238B (en) * 2000-06-30 2002-04-11 Fujitsu Media Devices Ltd Surface acoustic wave device
JP3780408B2 (ja) 2001-01-26 2006-05-31 株式会社村田製作所 弾性表面波フィルタ装置
JP3509764B2 (ja) 2001-03-23 2004-03-22 株式会社村田製作所 弾性表面波装置、通信装置
EP1276235A1 (en) * 2001-07-13 2003-01-15 Matsushita Electric Industrial Co., Ltd. Surface acoustic wave filter and communication device using the filter
JP3743341B2 (ja) 2001-10-17 2006-02-08 株式会社村田製作所 弾性表面波装置
JP4100249B2 (ja) * 2003-05-19 2008-06-11 株式会社村田製作所 弾性表面波装置、通信機
JP4329557B2 (ja) * 2004-02-09 2009-09-09 株式会社村田製作所 弾性表面波装置、通信機
DE102004048715B4 (de) * 2004-10-06 2014-05-22 Epcos Ag SAW-Filter mit Impedanz-Transformation
US7683735B2 (en) 2005-02-16 2010-03-23 Murata Manufacturing Co., Ltd. Balanced acoustic wave filter
DE102006024048B4 (de) * 2006-05-11 2008-04-10 Audi Ag Brennkraftmaschine mit einem Kurbelraum

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH03129915A (ja) * 1989-10-16 1991-06-03 Kokusai Electric Co Ltd 弾性表面波共振子
JPH1197966A (ja) * 1997-09-22 1999-04-09 Tdk Corp 弾性表面波フィルタ
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
WO2006068087A1 (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
JP2006229487A (ja) * 2005-02-16 2006-08-31 Murata Mfg Co Ltd バランス型弾性波フィルタ装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2013141151A1 (ja) * 2012-03-22 2015-08-03 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
US9425763B2 (en) 2012-03-22 2016-08-23 Murata Manufacturing Co., Ltd. Longitudinally-coupled-resonator-type surface acoustic wave filter

Also Published As

Publication number Publication date
US20100066462A1 (en) 2010-03-18
JPWO2008149619A1 (ja) 2010-08-19
US8102225B2 (en) 2012-01-24
CN101682311A (zh) 2010-03-24

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