DE69636897D1 - Akustischer Oberflächenwellenfilter - Google Patents
Akustischer OberflächenwellenfilterInfo
- 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
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
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69737555T2 (de) * | 1996-05-23 | 2007-08-09 | Matsushita Electric Industrial Co., Ltd., Kadoma | Akustisches Oberflächenwellenfilter und mehrstufiges akustisches 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 |
US6348845B2 (en) | 1996-05-23 | 2002-02-19 | Matsushita Electric Industrial Co., Ltd. | Surface acoustic wave filter and multistage surface acoustic wave filter |
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 |
US10367473B2 (en) * | 2015-01-27 | 2019-07-30 | Kyocera Corporation | Filter, multiplexer, and communication apparatus |
JP2018064270A (ja) * | 2016-10-13 | 2018-04-19 | スカイワークス ソリューションズ,インコーポレイテッドSkyworks Solutions,Inc. | 可変電極指ピッチと接続配列とを有する弾性表面波素子 |
CN110582937B (zh) | 2017-04-28 | 2023-08-25 | 株式会社村田制作所 | 弹性波装置、滤波器以及复合滤波器装置 |
JP7047919B2 (ja) | 2018-08-13 | 2022-04-05 | 株式会社村田製作所 | 弾性波フィルタ |
JP7491087B2 (ja) | 2019-12-11 | 2024-05-28 | 株式会社村田製作所 | フィルタ装置 |
Family Cites Families (21)
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 |
DE4431612C2 (de) * | 1993-09-06 | 1998-07-16 | Sanyo Electric Co | 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 |
EP0763889B1 (de) * | 1995-03-15 | 2005-10-26 | Kinseki Limited | Akustisches oberflächenwellenfilter |
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 |
-
1996
- 1996-05-28 DE DE69636897T patent/DE69636897T2/de not_active Expired - Lifetime
- 1996-05-28 EP EP96108469A patent/EP0746095B1/de not_active Expired - Lifetime
- 1996-05-29 US US08/654,608 patent/US5844453A/en not_active Expired - Lifetime
-
1998
- 1998-09-22 US US09/158,071 patent/US6034577A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0746095B1 (de) | 2007-02-14 |
EP0746095A1 (de) | 1996-12-04 |
US6034577A (en) | 2000-03-07 |
US5844453A (en) | 1998-12-01 |
DE69636897T2 (de) | 2007-10-25 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
R082 | Change of representative |
Ref document number: 746095 Country of ref document: EP Representative=s name: DTS MUENCHEN PATENT- UND RECHTSANWAELTE, DE |
|
R081 | Change of applicant/patentee |
Ref document number: 746095 Country of ref document: EP Owner name: TEEMING DATA LLC, US Free format text: FORMER OWNER: SANYO ELECTRIC CO., LTD., MORIGUCHI-SHI, JP Effective date: 20120911 |
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R082 | Change of representative |
Ref document number: 746095 Country of ref document: EP Representative=s name: DTS MUENCHEN PATENT- UND RECHTSANWAELTE, DE Effective date: 20120911 |