DE60144172D1 - Transversalfilter mit akustischen Oberflächenwellen - Google Patents

Transversalfilter mit akustischen Oberflächenwellen

Info

Publication number
DE60144172D1
DE60144172D1 DE60144172T DE60144172T DE60144172D1 DE 60144172 D1 DE60144172 D1 DE 60144172D1 DE 60144172 T DE60144172 T DE 60144172T DE 60144172 T DE60144172 T DE 60144172T DE 60144172 D1 DE60144172 D1 DE 60144172D1
Authority
DE
Germany
Prior art keywords
surface acoustic
acoustic waves
transverse filter
transverse
filter
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
DE60144172T
Other languages
English (en)
Inventor
Yasuhisa Fujii
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 DE60144172D1 publication Critical patent/DE60144172D1/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
    • 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
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14502—Surface acoustic wave [SAW] transducers for a particular purpose
    • H03H9/14505—Unidirectional SAW 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
    • H03H9/14517—Means for weighting
    • H03H9/14526—Finger withdrawal
    • 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
    • H03H9/14552—Transducers of particular shape or position comprising split fingers
    • 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
    • H03H9/643—Means for obtaining a particular transfer characteristic the transfer characteristic being determined by reflective or coupling array characteristics

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
DE60144172T 2000-11-17 2001-11-15 Transversalfilter mit akustischen Oberflächenwellen Expired - Lifetime DE60144172D1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2000351271 2000-11-17
JP2001163121A JP3695353B2 (ja) 2000-11-17 2001-05-30 トランスバーサル型弾性表面波フィルタ

Publications (1)

Publication Number Publication Date
DE60144172D1 true DE60144172D1 (de) 2011-04-21

Family

ID=26604193

Family Applications (1)

Application Number Title Priority Date Filing Date
DE60144172T Expired - Lifetime DE60144172D1 (de) 2000-11-17 2001-11-15 Transversalfilter mit akustischen Oberflächenwellen

Country Status (4)

Country Link
US (1) US6504453B2 (de)
EP (1) EP1207621B1 (de)
JP (1) JP3695353B2 (de)
DE (1) DE60144172D1 (de)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3414373B2 (ja) * 2000-07-26 2003-06-09 株式会社村田製作所 弾性表面波装置
KR100623708B1 (ko) 2004-12-13 2006-09-14 주식회사 쏘닉스 다중 홀 표면 탄성파 소자
US7623037B1 (en) * 2005-02-08 2009-11-24 University Of Central Florida Research Foundation, Inc. Multi-transducer/antenna surface acoustic wave device sensor and tag
US7777625B1 (en) * 2005-08-25 2010-08-17 University Of Central Florida Research Foundation, Inc. Weighted saw reflector gratings for orthogonal frequency coded SAW ID tags and sensors
US7952482B2 (en) * 2005-08-25 2011-05-31 University Of Central Florida Research Foundation, Inc. Surface acoustic wave coding for orthogonal frequency coded devices
DE102007028291B4 (de) * 2007-06-20 2013-04-25 Epcos Ag Mit akustischen Oberflächenwellen arbeitendes Transversalfilter
DE102007063470A1 (de) * 2007-12-20 2009-07-02 IFW - Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. Wandler, Resonator und Filter für akustische Oberflächenwellen
US8729779B2 (en) 2009-04-09 2014-05-20 The Trustees Of The University Of Pennsylvania Wide bandwidth slanted-finger contour-mode piezoelectric devices
JP2012034082A (ja) * 2010-07-29 2012-02-16 Japan Radio Co Ltd 表面弾性波デバイス
WO2014034215A1 (ja) * 2012-08-30 2014-03-06 株式会社村田製作所 フィルタ装置及びデュプレクサ
EP2905616B1 (de) * 2012-10-01 2017-01-04 Panasonic Intellectual Property Management Co., Ltd. Elastisches wellenelement und elastischer wellensensor damit
EP3176948B1 (de) * 2014-07-30 2021-03-17 Kyocera Corporation Elastisches wellenelement, filterelement und kommunikationsvorrichtung

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8327551D0 (en) 1983-10-14 1983-11-16 Secr Defence Acoustic transducer
JPH02305016A (ja) * 1989-05-18 1990-12-18 Murata Mfg Co Ltd 弾性表面波フィルタ
DE3942140A1 (de) * 1989-12-20 1991-06-27 Siemens Ag Oberflaechenwellen-reflektorfilter
FR2658013B1 (fr) * 1990-02-02 1992-04-17 Thomson Csf Filtre a ondes acoustiques de surface.
DE19548042C2 (de) * 1995-12-21 1999-11-04 Siemens Matsushita Components Mit akustischen Oberflächenwellen arbeitendes Filter -OFW-Filter-
US6137380A (en) * 1996-08-14 2000-10-24 Murata Manufacturing, Co., Ltd Surface acoustic wave filter utilizing a particularly placed spurious component of a parallel resonator
JPH10276062A (ja) * 1997-03-31 1998-10-13 Sanyo Electric Co Ltd 弾性表面波デバイス
US6104260A (en) * 1997-12-22 2000-08-15 Matsushita Electric Industrial Co., Ltd. Surface acoustic wave filter with first and second filter tracks and balanced or unbalanced terminals
JP3315913B2 (ja) 1997-12-22 2002-08-19 松下電器産業株式会社 弾性表面波フィルタ

Also Published As

Publication number Publication date
US20020105392A1 (en) 2002-08-08
JP3695353B2 (ja) 2005-09-14
JP2002217681A (ja) 2002-08-02
EP1207621B1 (de) 2011-03-09
US6504453B2 (en) 2003-01-07
EP1207621A3 (de) 2006-04-12
EP1207621A2 (de) 2002-05-22

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