[go: up one dir, main page]

WO2008142905A1 - バランス型弾性波フィルタ装置及び複合フィルタ - Google Patents

バランス型弾性波フィルタ装置及び複合フィルタ Download PDF

Info

Publication number
WO2008142905A1
WO2008142905A1 PCT/JP2008/055260 JP2008055260W WO2008142905A1 WO 2008142905 A1 WO2008142905 A1 WO 2008142905A1 JP 2008055260 W JP2008055260 W JP 2008055260W WO 2008142905 A1 WO2008142905 A1 WO 2008142905A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
surface acoustic
wave filter
acoustic wave
idts
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/JP2008/055260
Other languages
English (en)
French (fr)
Inventor
Junpei Yasuda
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 JP2009515107A priority Critical patent/JP4655161B2/ja
Publication of WO2008142905A1 publication Critical patent/WO2008142905A1/ja
Priority to US12/615,368 priority patent/US7898366B2/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
    • H03H9/0033—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 one acoustic track only
    • H03H9/0038—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 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 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
    • H03H9/0066—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 parallel
    • H03H9/0071—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 parallel 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
    • H03H9/0085—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

Landscapes

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

Abstract

　第１，第２の平衡端子間の伝送特性の平衡度が改善された弾性波フィルタ装置を提供する。 　３ＩＤＴ型の縦結合型の第１，第２の弾性波フィルタ素子１３，１４が不平衡端子に並列に接続されており、第１のＩＤＴ２１及び第４のＩＤＴ２４の各一端が共通接続されて不平衡端子９に接続されており、第２，第３のＩＤＴ２２，２３が共通接続されて第１の平衡端子１０に接続されており、第５，第６のＩＤＴが共通接続されて第２の平衡端子１１に接続されており、第２，第３のＩＤＴ２２，２３の内、第１のアース端子３７に近い側のＩＤＴ２２と第２のアース端子３７とを電気的に接続している第１のアース線路の長さが、第５，第６のＩＤＴの内、第１のアース端子３７に近い側の第５のＩＤＴと第１のアース端子３７と電気的に接続している第２のアース線路よりも長くされている、弾性波フィルタ装置１４。
PCT/JP2008/055260 2007-05-22 2008-03-21 バランス型弾性波フィルタ装置及び複合フィルタ Ceased WO2008142905A1 (ja)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2009515107A JP4655161B2 (ja) 2007-05-22 2008-03-21 バランス型弾性波フィルタ装置及び複合フィルタ
US12/615,368 US7898366B2 (en) 2007-05-22 2009-11-10 Balanced acoustic wave filter device and composite filter

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-135430 2007-05-22
JP2007135430 2007-05-22

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US12/615,368 Continuation US7898366B2 (en) 2007-05-22 2009-11-10 Balanced acoustic wave filter device and composite filter

Publications (1)

Publication Number Publication Date
WO2008142905A1 true WO2008142905A1 (ja) 2008-11-27

Family

ID=40031622

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2008/055260 Ceased WO2008142905A1 (ja) 2007-05-22 2008-03-21 バランス型弾性波フィルタ装置及び複合フィルタ

Country Status (3)

Country Link
US (1) US7898366B2 (ja)
JP (1) JP4655161B2 (ja)
WO (1) WO2008142905A1 (ja)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8063722B2 (en) * 2008-02-27 2011-11-22 Taiyo Yuden Co., Ltd. Balance filter comprising two acoustic wave filters connected to a single ground terminal
US20120098618A1 (en) * 2009-06-26 2012-04-26 Kyocera Corporation Surface Acoustic Wave Filter and Duplexer Using Same

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008146524A1 (ja) * 2007-05-30 2008-12-04 Murata Manufacturing Co., Ltd. 弾性波フィルタ装置
CN101821945B (zh) * 2007-10-17 2012-11-07 株式会社村田制作所 平衡型声波滤波装置及复合滤波器
DE102010021164B4 (de) * 2010-05-21 2019-02-21 Snaptrack, Inc. Balanced/Unbalanced arbeitendes SAW Filter
JP5796604B2 (ja) * 2013-06-13 2015-10-21 株式会社村田製作所 分波装置
KR102825987B1 (ko) * 2020-09-29 2025-06-26 가부시키가이샤 무라타 세이사쿠쇼 종결합 공진자형 탄성파 필터 및 탄성파 필터
CN112511124A (zh) * 2021-02-07 2021-03-16 成都频岢微电子有限公司 用于改善dms型接收滤波器带外抑制的接地结构及滤波器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP2006246145A (ja) * 2005-03-04 2006-09-14 Murata Mfg Co Ltd バランス型弾性波フィルタ装置
JP2007104052A (ja) * 2005-09-30 2007-04-19 Nippon Dempa Kogyo Co Ltd 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
US7683735B2 (en) 2005-02-16 2010-03-23 Murata Manufacturing Co., Ltd. Balanced acoustic wave filter
JP2009206688A (ja) * 2008-02-27 2009-09-10 Fujitsu Media Device Kk バランスフィルタ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP2006246145A (ja) * 2005-03-04 2006-09-14 Murata Mfg Co Ltd バランス型弾性波フィルタ装置
JP2007104052A (ja) * 2005-09-30 2007-04-19 Nippon Dempa Kogyo Co Ltd 弾性表面波フィルタ

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8063722B2 (en) * 2008-02-27 2011-11-22 Taiyo Yuden Co., Ltd. Balance filter comprising two acoustic wave filters connected to a single ground terminal
US20120098618A1 (en) * 2009-06-26 2012-04-26 Kyocera Corporation Surface Acoustic Wave Filter and Duplexer Using Same
US9041487B2 (en) * 2009-06-26 2015-05-26 Kyocera Corporation Surface acoustic wave filter and duplexer using same

Also Published As

Publication number Publication date
JPWO2008142905A1 (ja) 2010-08-05
JP4655161B2 (ja) 2011-03-23
US7898366B2 (en) 2011-03-01
US20100045399A1 (en) 2010-02-25

Similar Documents

Publication Publication Date Title
WO2008142905A1 (ja) バランス型弾性波フィルタ装置及び複合フィルタ
EP2015451A4 (en) DUPLEXER
TW200605500A (en) Balance-unbalance converting-type elastic wave filter and elastic wave filter device
EP2590326A3 (en) Duplexer, filter and communication module
CN101473534B (zh) 弹性波滤波装置及双工器
EP1998445A3 (en) Coupled resonator filter with a filter section
WO2008008151A3 (en) Bulk acoustic wave filter with reduced nonlinear signal distortion
WO2009001651A1 (ja) 弾性表面波装置及び通信装置
EP1998444A3 (en) Bulk acoustic wave device with coupled resonators
TWI256194B (en) Filter assembly with unbalanced to balanced conversion
EP1464115A4 (en) MAIN PART SURFACE WAVE RESONATOR WITH TWO PIEZOELECTRIC LAYERS AS A SYMMETRIC LIQUID IN FILTERS AND DUPLEXERS
EP2043260A3 (en) Elastic wave filter
WO2008146552A1 (ja) 弾性波分波器
EP1717953A3 (en) Surface accoustic wave filter and duplexer using the same
WO2008108113A1 (ja) 弾性波フィルタ装置及びデュプレクサ
EP2679993A3 (en) SAW array sensor
WO2009044585A1 (ja) 弾性波フィルタ装置
EP1330027A3 (en) Surface acoustic wave device and communication device comprising it
WO2008096514A1 (ja) 弾性波フィルタ装置
EP1885064A3 (en) Filter having multiple surface acoustic wave filters connected in parallel
EP2262109A3 (en) Surface acoustic wave device
EP1372263A3 (en) High-frequency device and communication apparatus
WO2008078496A1 (ja) 弾性波装置
TWI225334B (en) Surface acoustic wave device
WO2008149619A1 (ja) 弾性波フィルタ装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 08722624

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2009515107

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08722624

Country of ref document: EP

Kind code of ref document: A1