DE60238321D1 - Oberflächenwellenfilteranornung und kommunikationsgerät mit derselben - Google Patents

Oberflächenwellenfilteranornung und kommunikationsgerät mit derselben

Info

Publication number
DE60238321D1
DE60238321D1 DE60238321T DE60238321T DE60238321D1 DE 60238321 D1 DE60238321 D1 DE 60238321D1 DE 60238321 T DE60238321 T DE 60238321T DE 60238321 T DE60238321 T DE 60238321T DE 60238321 D1 DE60238321 D1 DE 60238321D1
Authority
DE
Germany
Prior art keywords
same
communication device
wave filter
filter assembly
surface wave
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
DE60238321T
Other languages
English (en)
Inventor
Masaru Yata
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
Application granted granted Critical
Publication of DE60238321D1 publication Critical patent/DE60238321D1/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
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • 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
    • 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
    • H03H9/0066—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks being electrically parallel
    • H03H9/0071—Balance-unbalance or balance-balance networks 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 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
    • H03H9/6436—Coupled resonator filters having one acoustic track only

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
DE60238321T 2001-06-22 2002-06-20 Oberflächenwellenfilteranornung und kommunikationsgerät mit derselben Expired - Lifetime DE60238321D1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2001190168 2001-06-22
JP2002134755A JP3873807B2 (ja) 2001-06-22 2002-05-09 弾性表面波装置、通信装置
PCT/IB2002/002352 WO2003001667A1 (en) 2001-06-22 2002-06-20 Surface acoustic wave device and communication device using same

Publications (1)

Publication Number Publication Date
DE60238321D1 true DE60238321D1 (de) 2010-12-30

Family

ID=26617435

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60238321T Expired - Lifetime DE60238321D1 (de) 2001-06-22 2002-06-20 Oberflächenwellenfilteranornung und kommunikationsgerät mit derselben

Country Status (8)

Country Link
US (1) US7042313B2 (de)
EP (1) EP1397861B1 (de)
JP (1) JP3873807B2 (de)
KR (1) KR100896897B1 (de)
CN (1) CN1292536C (de)
DE (1) DE60238321D1 (de)
TW (1) TWI258920B (de)
WO (1) WO2003001667A1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6828879B2 (en) * 2001-02-16 2004-12-07 Sanyo Electric Co., Ltd. Longitudinal coupled multiple mode surface acoustic wave filter
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
JP4544157B2 (ja) * 2003-07-30 2010-09-15 パナソニック株式会社 弾性表面波フィルタ
JP4569325B2 (ja) * 2005-03-04 2010-10-27 株式会社村田製作所 バランス型弾性波フィルタ装置
JPWO2006087875A1 (ja) 2005-02-16 2008-07-03 株式会社村田製作所 バランス型弾性波フィルタ装置
US7619347B1 (en) 2005-05-24 2009-11-17 Rf Micro Devices, Inc. Layer acoustic wave device and method of making the same
WO2007007475A1 (ja) * 2005-07-13 2007-01-18 Murata Manufacturing Co., Ltd. 弾性波フィルタ装置
ATE540474T1 (de) * 2006-04-06 2012-01-15 Murata Manufacturing Co Duplexer
EP2017961A4 (de) * 2006-05-08 2011-02-16 Murata Manufacturing Co Elastische wellenfiltervorrichtung und duplexer
EP2034611A4 (de) * 2006-06-21 2010-08-04 Murata Manufacturing Co Elastikwellenfiltereinrichtung und duplexer
JP4244057B2 (ja) * 2006-08-30 2009-03-25 富士通メディアデバイス株式会社 バランスフィルタおよび分波器
US8490260B1 (en) 2007-01-17 2013-07-23 Rf Micro Devices, Inc. Method of manufacturing SAW device substrates
US7408286B1 (en) * 2007-01-17 2008-08-05 Rf Micro Devices, Inc. Piezoelectric substrate for a saw device
JP5158725B2 (ja) * 2008-04-25 2013-03-06 京セラ株式会社 弾性表面波装置およびそれを用いた通信装置
US20240039512A1 (en) * 2022-07-27 2024-02-01 Rf360 Singapore Pte. Ltd. Twin Double-Mode Surface-Acoustic-Wave (DMS) Filters with Opposite Polarities and a Geometric Offset

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09167936A (ja) * 1995-10-13 1997-06-24 Fujitsu Ltd 弾性表面波装置
JP3917708B2 (ja) 1996-04-02 2007-05-23 松下電器産業株式会社 表面弾性波フィルタ
JP3239064B2 (ja) * 1996-05-28 2001-12-17 富士通株式会社 弾性表面波装置
US5933062A (en) * 1997-11-04 1999-08-03 Motorola Inc. Acoustic wave ladder filter with effectively increased coupling coefficient and method of providing same
DE19818038B4 (de) * 1998-04-22 2004-07-22 Epcos Ag Dualmode-Oberflächenwellenfilter
JP2000151337A (ja) 1998-11-17 2000-05-30 Mitsubishi Electric Corp 弾性表面波共振器フィルタ
US6255915B1 (en) * 1999-05-10 2001-07-03 Research In Motion Limited Differential surface acoustic wave filter having balanced outputs
DE19938748B4 (de) * 1999-08-16 2007-02-01 Epcos Ag Dualmode-Oberflächenwellen-Filter mit verbesserter Symmetrie und erhöhter Sperrdämpfung
JP2001267885A (ja) * 2000-03-17 2001-09-28 Fujitsu Media Device Kk 弾性表面波装置
JP3454239B2 (ja) * 2000-08-31 2003-10-06 株式会社村田製作所 弾性表面波フィルタ
JP2002359541A (ja) 2000-10-27 2002-12-13 Toyo Commun Equip Co Ltd 共振子型弾性表面波フィルタ
EP1276235A1 (de) * 2001-07-13 2003-01-15 Matsushita Electric Industrial Co., Ltd. Oberflächenwellen Filter und Kommunikationsgerät das diesen benutzt

Also Published As

Publication number Publication date
KR100896897B1 (ko) 2009-05-14
CN1465135A (zh) 2003-12-31
US20040106383A1 (en) 2004-06-03
US7042313B2 (en) 2006-05-09
EP1397861B1 (de) 2010-11-17
KR20030033031A (ko) 2003-04-26
JP2003078387A (ja) 2003-03-14
TWI258920B (en) 2006-07-21
WO2003001667A1 (en) 2003-01-03
JP3873807B2 (ja) 2007-01-31
EP1397861A1 (de) 2004-03-17
CN1292536C (zh) 2006-12-27

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