DE69636897D1 - Akustischer Oberflächenwellenfilter - Google Patents

Akustischer Oberflächenwellenfilter

Info

Publication number
DE69636897D1
DE69636897D1 DE69636897T DE69636897T DE69636897D1 DE 69636897 D1 DE69636897 D1 DE 69636897D1 DE 69636897 T DE69636897 T DE 69636897T DE 69636897 T DE69636897 T DE 69636897T DE 69636897 D1 DE69636897 D1 DE 69636897D1
Authority
DE
Germany
Prior art keywords
wave filter
surface wave
acoustic surface
acoustic
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
DE69636897T
Other languages
English (en)
Other versions
DE69636897T2 (de
Inventor
Kuniyuki Matsui
Yasuhiro Hirao
Yasumi Kobayashi
Kousuke Takeuchi
Kenichi Shibata
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.)
TEEMING DATA LLC, US
Original Assignee
Sanyo Electric 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
Priority claimed from JP12993995A external-priority patent/JP3459494B2/ja
Priority claimed from JP13191895A external-priority patent/JPH08330891A/ja
Application filed by Sanyo Electric Co Ltd filed Critical Sanyo Electric Co Ltd
Application granted granted Critical
Publication of DE69636897D1 publication Critical patent/DE69636897D1/de
Publication of DE69636897T2 publication Critical patent/DE69636897T2/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
    • H03H9/644—Coupled resonator filters having two acoustic tracks
    • H03H9/6456—Coupled resonator filters having two acoustic tracks being electrically coupled
    • H03H9/6459—Coupled resonator filters having two acoustic tracks being electrically coupled via one connecting electrode
    • H03H9/6463—Coupled resonator filters having two acoustic tracks being electrically coupled via one connecting electrode the tracks being electrically cascaded
    • H03H9/6466—Coupled resonator filters having two acoustic tracks being electrically coupled via one connecting electrode the tracks being electrically cascaded each track containing more than two 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
    • H03H9/14552—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
    • H03H9/25—Constructional features of resonators 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
    • H03H9/46—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
    • H03H9/6473—Coupled resonator filters having two acoustic tracks being electrically coupled via two connecting electrodes the electrodes being electrically interconnected
    • 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
    • H03H9/6483—Ladder SAW filters
DE69636897T 1995-05-29 1996-05-28 Akustischer Oberflächenwellenfilter Expired - Lifetime DE69636897T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP12993995A JP3459494B2 (ja) 1995-05-29 1995-05-29 弾性表面波フィルタ
JP12993995 1995-05-29
JP13191895A JPH08330891A (ja) 1995-05-30 1995-05-30 弾性表面波フィルタ
JP13191895 1995-05-30

Publications (2)

Publication Number Publication Date
DE69636897D1 true DE69636897D1 (de) 2007-03-29
DE69636897T2 DE69636897T2 (de) 2007-10-25

Family

ID=26465196

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69636897T Expired - Lifetime DE69636897T2 (de) 1995-05-29 1996-05-28 Akustischer Oberflächenwellenfilter

Country Status (3)

Country Link
US (2) US5844453A (de)
EP (1) EP0746095B1 (de)
DE (1) DE69636897T2 (de)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6348845B2 (en) 1996-05-23 2002-02-19 Matsushita Electric Industrial Co., Ltd. Surface acoustic wave filter and multistage surface acoustic wave filter
EP0809357B1 (de) * 1996-05-23 1999-12-15 Matsushita Electric Industrial Co., Ltd. Akustischer Oberflächenwellenfilter und mehrstufiger akustischer Oberflächenwellenfilter
US6801100B2 (en) * 1996-05-23 2004-10-05 Matsushita Electric Industrial Co., Ltd. Inter-digital transducer, surface acoustic wave filter and communication apparatus using the same
GB9622654D0 (en) * 1996-10-31 1997-01-08 Flowers James E Filters
JP3227649B2 (ja) * 1997-08-07 2001-11-12 株式会社村田製作所 弾性表面波フィルタ
US5949306A (en) * 1997-12-02 1999-09-07 Cts Corporation Saw ladder filter with split resonators and method of providing same
JP3206548B2 (ja) * 1998-05-14 2001-09-10 株式会社村田製作所 表面波フィルタ、共用器、通信機装置
JP3228223B2 (ja) * 1998-05-26 2001-11-12 株式会社村田製作所 弾性表面波フィルタ
EP0961405A3 (de) * 1998-05-27 2002-04-03 Kabushiki Kaisha Toshiba Akustische Oberflächenwellenanordung
JP3419339B2 (ja) * 1999-03-11 2003-06-23 株式会社村田製作所 弾性表面波フィルタ、デュプレクサ、通信機装置
JP3371849B2 (ja) * 1999-04-28 2003-01-27 株式会社村田製作所 Ｓａｗ共振子、複合ｓａｗフィルタ及びｓａｗフィルタ
JP2001267885A (ja) * 2000-03-17 2001-09-28 Fujitsu Media Device Kk 弾性表面波装置
JP3824498B2 (ja) * 2000-09-28 2006-09-20 富士通株式会社 弾性表面波フィルタ
EP1239588A2 (de) * 2001-03-04 2002-09-11 Kazuhiko Yamanouchi Akustisches Oberflächenwellensubstrat und akustischer Oberflächenwellenfunktionsbaustein
JP3743329B2 (ja) * 2001-03-23 2006-02-08 株式会社村田製作所 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
JP3509771B2 (ja) * 2001-04-18 2004-03-22 株式会社村田製作所 弾性表面波フィルタ装置、通信装置
JP3824499B2 (ja) * 2001-04-20 2006-09-20 富士通株式会社 弾性表面波共振子及び弾性表面波フィルタ
US6534896B2 (en) * 2001-05-15 2003-03-18 Nortel Networks Limited Spatial harmonic transducers for surface wave devices
JP2005045475A (ja) 2003-07-28 2005-02-17 Murata Mfg Co Ltd 弾性表面波装置、通信機
DE102014111828A1 (de) * 2014-08-19 2016-02-25 Epcos Ag Mit akustischen Oberflächenwellen arbeitender Eintorresonator
JP6408592B2 (ja) * 2015-01-27 2018-10-17 京セラ株式会社 フィルタ，分波器および通信装置
US10530331B2 (en) * 2016-10-13 2020-01-07 Skyworks Solutions, Inc. Surface acoustic wave elements with varying electrode finger pitch and connection arrangements
WO2018199070A1 (ja) 2017-04-28 2018-11-01 株式会社村田製作所 弾性波装置、フィルタ及び複合フィルタ装置
CN112567630A (zh) 2018-08-13 2021-03-26 株式会社村田制作所 弹性波滤波器
JP2021093710A (ja) 2019-12-11 2021-06-17 株式会社村田製作所 フィルタ装置

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3792381A (en) * 1973-02-20 1974-02-12 Hughes Aircraft Co Surface-wave electro-acoustic transducer
US3886504A (en) * 1974-05-20 1975-05-27 Texas Instruments Inc Acoustic surface wave resonator devices
US4249146A (en) * 1979-02-23 1981-02-03 Trw Inc. Surface acoustic wave resonators utilizing harmonic frequencies
JPS62115A (ja) * 1985-02-25 1987-01-06 Oki Electric Ind Co Ltd 弾性表面波フイルタ
JPS632414A (ja) * 1986-06-21 1988-01-07 Alps Electric Co Ltd 弾性表面波共振子
JPH036913A (ja) * 1989-06-05 1991-01-14 Hitachi Ltd 弾性表面波フィルタ及びそれを用いた移動無線装置
JPH03270309A (ja) * 1990-03-19 1991-12-02 Fujitsu Ltd 多電極構成型弾性表面波素子
CA2038474C (en) * 1990-03-19 1994-09-20 Yoshio Satoh Surface-acoustic-waver filter having a plurality of electrodes
DE4010310A1 (de) * 1990-03-30 1991-10-02 Siemens Ag Oberflaechenwellenwandler, insbesondere in splitfinger-ausfuehrung, mit unterdrueckung von reflexionen endstaendiger wandlerfinger
CA2062463C (en) * 1991-03-29 1996-01-16 Yoshio Satoh Surface acoustic wave device for band-pass filter having small insertion loss and predetermined pass-band characteristics for broad band
JP3137394B2 (ja) * 1991-11-09 2001-02-19 東洋通信機株式会社 縦結合二重モードリーキーｓａｗフィルタ
US5309126A (en) * 1991-11-18 1994-05-03 Motorola, Inc. Spatially varying multiple electrode acoustic wave filter and method therefor
JPH05315886A (ja) * 1992-05-14 1993-11-26 Matsushita Electric Ind Co Ltd 弾性表面波フィルタ
US5363074A (en) * 1992-10-19 1994-11-08 Motorola, Inc. Saw structure having serially coupled transducers with overlapping fingers
JPH06188673A (ja) * 1992-12-18 1994-07-08 Fujitsu Ltd 弾性表面波フィルタ
DE4447740B4 (de) * 1993-09-06 2008-10-09 Sanyo Electric Co., Ltd., Moriguchi Akustisches Oberflächenwellenfilter
JP3375712B2 (ja) * 1994-01-12 2003-02-10 松下電器産業株式会社 弾性表面波フィルタ
US5600287A (en) * 1994-02-03 1997-02-04 Motorola, Inc. Acoustic wave filter with reduced bulk-wave scattering loss, ladder filter incorporating same and method
KR100400426B1 (ko) * 1995-03-15 2003-12-31 긴세키 가부시키가이샤 탄성표면파필터
JPH08265087A (ja) * 1995-03-22 1996-10-11 Mitsubishi Electric Corp 弾性表面波フィルタ
JP3224202B2 (ja) * 1996-11-28 2001-10-29 富士通株式会社 弾性表面波装置

Also Published As

Publication number Publication date
EP0746095B1 (de) 2007-02-14
EP0746095A1 (de) 1996-12-04
US5844453A (en) 1998-12-01
DE69636897T2 (de) 2007-10-25
US6034577A (en) 2000-03-07

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