DE69619929T2 - Elektroakustische Vorrichtung - Google Patents
Elektroakustische VorrichtungInfo
- Publication number
- DE69619929T2 DE69619929T2 DE69619929T DE69619929T DE69619929T2 DE 69619929 T2 DE69619929 T2 DE 69619929T2 DE 69619929 T DE69619929 T DE 69619929T DE 69619929 T DE69619929 T DE 69619929T DE 69619929 T2 DE69619929 T2 DE 69619929T2
- Authority
- DE
- Germany
- Prior art keywords
- electroacoustic device
- electroacoustic
- 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
-
- 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
- H03H9/0047—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks
- H03H9/0052—Balance-unbalance or balance-balance networks using surface acoustic wave devices having two acoustic tracks being electrically cascaded
- H03H9/0057—Balance-unbalance or balance-balance networks 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 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
- H03H9/02—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
- H03H9/14588—Horizontally-split 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
- H03H9/46—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
- H03H9/46—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
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9522533A GB2306821B (en) | 1995-11-03 | 1995-11-03 | Electro-acoustic device |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69619929D1 DE69619929D1 (de) | 2002-04-25 |
DE69619929T2 true DE69619929T2 (de) | 2002-11-07 |
Family
ID=10783329
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69619929T Expired - Lifetime DE69619929T2 (de) | 1995-11-03 | 1996-11-01 | Elektroakustische Vorrichtung |
Country Status (4)
Country | Link |
---|---|
US (1) | US6268782B1 (de) |
EP (1) | EP0772293B1 (de) |
DE (1) | DE69619929T2 (de) |
GB (1) | GB2306821B (de) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2310776B (en) * | 1995-07-10 | 1998-07-08 | Matsushita Electric Ind Co Ltd | Spread spectrum communication apparatus and demodulator surface acoustic wave element and surface acoustic wave parts for spread spectrum communication |
GB2303265B (en) | 1995-07-10 | 1998-07-08 | Matsushita Electric Ind Co Ltd | Spread spectrum communication apparatus,and demodulator,surface acoustic wave element and surface acoustic wave parts for spread spectrum communication |
JP3077052B2 (ja) * | 1995-12-27 | 2000-08-14 | 株式会社村田製作所 | 弾性表面波共振子フィルタ装置 |
GB2312109B (en) * | 1996-03-29 | 2000-08-02 | Advanced Saw Prod Sa | Acoustic wave filter |
EP0800270B1 (de) * | 1996-04-02 | 2003-09-10 | Matsushita Electric Industrial Co., Ltd. | 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 |
DE19724258C2 (de) * | 1997-06-09 | 2002-10-10 | Epcos Ag | Dualmode-Oberflächenwellenfilter |
DE19724255C2 (de) * | 1997-06-09 | 1999-10-21 | Siemens Matsushita Components | Transversalmodenresonatorfilter |
JP3253568B2 (ja) * | 1997-08-29 | 2002-02-04 | 富士通株式会社 | 多段接続型弾性表面波フィルタ |
KR20010034613A (ko) * | 1998-03-23 | 2001-04-25 | 에프코스 아게 | 표면파 음향 필터 |
JP2000244275A (ja) * | 1999-02-19 | 2000-09-08 | Murata Mfg Co Ltd | Saw共振子フィルタ |
DE10007178A1 (de) * | 2000-02-17 | 2001-08-23 | Epcos Ag | Oberflächenwellenfilter mit Reaktanzelementen |
JP3391347B2 (ja) * | 2000-06-26 | 2003-03-31 | 株式会社村田製作所 | 縦結合共振子型弾性表面波フィルタ |
JP3440935B2 (ja) * | 2000-11-29 | 2003-08-25 | 株式会社村田製作所 | 弾性表面波フィルタ |
FR2818051B1 (fr) * | 2000-12-08 | 2003-04-11 | Thomson Csf | Flitres a ondes acoustiques de surface a symetrie optimisee |
FR2821997B1 (fr) * | 2001-03-06 | 2003-05-30 | Thomson Csf | Filtre a ondes acoustiques de surface |
US6798318B1 (en) | 2001-04-27 | 2004-09-28 | Sawtek, Inc. | Hybrid leaky surface acoustic wave resonator filter |
US6861927B1 (en) * | 2001-04-27 | 2005-03-01 | Sawtek, Inc. | Longitudinally coupled leaky surface acoustic wave resonator filter |
JP3864850B2 (ja) * | 2001-08-09 | 2007-01-10 | 株式会社村田製作所 | 弾性表面波フィルタ、通信装置 |
DE10213277A1 (de) | 2002-03-25 | 2003-10-16 | Epcos Ag | Multiport-Resonatorfilter |
US7112912B2 (en) * | 2004-03-16 | 2006-09-26 | Tdk Corporation | Surface acoustic wave device and branching filter |
CN101040436B (zh) * | 2004-10-22 | 2010-10-20 | 株式会社村田制作所 | 平衡型声表面波滤波器 |
WO2006049000A1 (ja) * | 2004-11-04 | 2006-05-11 | Murata Manufacturing Co., Ltd. | バランス型sawフィルタ |
EP1830466B1 (de) * | 2004-12-24 | 2013-07-31 | Murata Manufacturing Co., Ltd. | Saw-filter des symmetrischen typs |
US8427258B2 (en) * | 2007-07-26 | 2013-04-23 | Kyocera Corporation | Surface acoustic wave device and communication device |
US9058314B2 (en) | 2009-11-04 | 2015-06-16 | International Business Machines Corporation | Dynamic editing of data representations using cascading weights |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3868608A (en) * | 1974-04-01 | 1975-02-25 | Gte Sylvania Inc | Surface wave filter |
US4223284A (en) * | 1977-11-07 | 1980-09-16 | Murata Manufacturing Co., Ltd. | Acoustic surface wave device |
JPS5566120A (en) * | 1978-11-13 | 1980-05-19 | Hitachi Ltd | Elastic surface wave device |
US4298849A (en) * | 1979-10-15 | 1981-11-03 | Motorola, Inc. | Duall-passband surface acoustic wave filter |
US4379998A (en) * | 1981-06-25 | 1983-04-12 | The Standard Oil Company | Acoustic degenerate four-wave mixing phase-conjugate reflector |
GB2117593B (en) * | 1982-03-31 | 1985-11-27 | Marconi Co Ltd | Adjusting the frequency response of surface acoustic wave devices |
EP0100503B1 (de) | 1982-07-26 | 1990-12-12 | Toyo Communication Equipment Co.,Ltd. | Hochfrequentes Multimodefilter mit schmalem Durchlassband |
AU564844B2 (en) * | 1984-10-09 | 1987-08-27 | X-Cyte Inc. | Saw transponder |
US5363074A (en) * | 1992-10-19 | 1994-11-08 | Motorola, Inc. | Saw structure having serially coupled transducers with overlapping fingers |
JP3254779B2 (ja) * | 1993-01-05 | 2002-02-12 | 株式会社村田製作所 | 多電極形弾性表面波装置 |
EP0648015B1 (de) * | 1993-10-08 | 2000-05-31 | Matsushita Electric Industrial Co., Ltd. | Akustisches Oberflächenwellenfilter |
US5365138A (en) * | 1993-12-02 | 1994-11-15 | Northern Telecom Limited | Double mode surface wave resonators |
US5790000A (en) * | 1995-06-16 | 1998-08-04 | Northern Telecom Limited | Cascaded surface wave device filters providing balanced and unbalanced signal connections |
US5793266A (en) * | 1996-08-12 | 1998-08-11 | Motorola Inc. | Differential input and/or differential output, transversely-coupled surface acoustic wave filter |
CA2199238C (en) * | 1997-03-05 | 2002-07-02 | Ji-Dong Dai | Surface wave device with capacitance |
-
1995
- 1995-11-03 GB GB9522533A patent/GB2306821B/en not_active Expired - Lifetime
-
1996
- 1996-10-30 US US08/741,025 patent/US6268782B1/en not_active Expired - Lifetime
- 1996-11-01 EP EP96307941A patent/EP0772293B1/de not_active Expired - Lifetime
- 1996-11-01 DE DE69619929T patent/DE69619929T2/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0772293A1 (de) | 1997-05-07 |
GB2306821A (en) | 1997-05-07 |
GB2306821B (en) | 2000-05-31 |
GB9522533D0 (en) | 1996-01-03 |
EP0772293B1 (de) | 2002-03-20 |
DE69619929D1 (de) | 2002-04-25 |
US6268782B1 (en) | 2001-07-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8328 | Change in the person/name/address of the agent |
Representative=s name: BECKER, KURIG, STRAUS, 80336 MUENCHEN |