DE69700938D1 - Akustischer Oberflächenwellenfilter und mehrstufiger akustischer Oberflächenwellenfilter - Google Patents
Akustischer Oberflächenwellenfilter und mehrstufiger akustischer OberflächenwellenfilterInfo
- Publication number
- DE69700938D1 DE69700938D1 DE69700938T DE69700938T DE69700938D1 DE 69700938 D1 DE69700938 D1 DE 69700938D1 DE 69700938 T DE69700938 T DE 69700938T DE 69700938 T DE69700938 T DE 69700938T DE 69700938 D1 DE69700938 D1 DE 69700938D1
- Authority
- DE
- Germany
- Prior art keywords
- wave filter
- surface wave
- acoustic surface
- stage
- stage acoustic
- 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
- H03H9/6443—Coupled resonator filters having two acoustic tracks being acoustically coupled
-
- 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
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02637—Details concerning reflective or coupling arrays
- H03H9/02685—Grating lines having particular arrangements
- H03H9/02763—Left and right side electrically coupled reflectors
-
- 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
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02992—Details of bus bars, contact pads or other electrical connections for finger electrodes
-
- 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
- H03H9/644—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
-
- 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
- H03H9/6479—Capacitively coupled SAW 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
- H03H9/02—Details
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02818—Means for compensation or elimination of undesirable effects
- H03H9/02913—Measures for shielding against electromagnetic fields
-
- 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
- H03H9/14597—Matching SAW transducers to external electrical circuits
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12876096 | 1996-05-23 | ||
JP23001696 | 1996-08-30 | ||
JP489497 | 1997-01-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69700938D1 true DE69700938D1 (de) | 2000-01-20 |
DE69700938T2 DE69700938T2 (de) | 2000-05-04 |
Family
ID=27276502
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69737555T Expired - Lifetime DE69737555T2 (de) | 1996-05-23 | 1997-05-22 | Akustisches Oberflächenwellenfilter und mehrstufiges akustisches Oberflächenwellenfilter |
DE69700938T Expired - Lifetime DE69700938T2 (de) | 1996-05-23 | 1997-05-22 | Akustischer Oberflächenwellenfilter und mehrstufiger akustischer Oberflächenwellenfilter |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69737555T Expired - Lifetime DE69737555T2 (de) | 1996-05-23 | 1997-05-22 | Akustisches Oberflächenwellenfilter und mehrstufiges akustisches Oberflächenwellenfilter |
Country Status (4)
Country | Link |
---|---|
US (2) | US5990762A (de) |
EP (2) | EP0809357B1 (de) |
CN (1) | CN1118932C (de) |
DE (2) | DE69737555T2 (de) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
DE19724259C2 (de) * | 1997-06-09 | 2002-11-14 | Epcos Ag | Dualmode-Oberflächenwellenfilter |
DE19724255C2 (de) * | 1997-06-09 | 1999-10-21 | Siemens Matsushita Components | Transversalmodenresonatorfilter |
KR20010034613A (ko) * | 1998-03-23 | 2001-04-25 | 에프코스 아게 | 표면파 음향 필터 |
US6259336B1 (en) * | 1998-05-27 | 2001-07-10 | Kabushiki Kaisha Toshiba | Surface acoustic wave filter device |
JP2000244275A (ja) * | 1999-02-19 | 2000-09-08 | Murata Mfg Co Ltd | Saw共振子フィルタ |
JP3918433B2 (ja) * | 1999-04-28 | 2007-05-23 | セイコーエプソン株式会社 | 横2重モードsawフィルタ |
JP3402311B2 (ja) * | 2000-05-19 | 2003-05-06 | 株式会社村田製作所 | 弾性表面波装置 |
JP3478260B2 (ja) * | 2000-10-27 | 2003-12-15 | 株式会社村田製作所 | 弾性表面波フィルタおよび通信機装置 |
JP3414387B2 (ja) * | 2001-03-09 | 2003-06-09 | 株式会社村田製作所 | 弾性表面波装置、通信装置 |
US6861927B1 (en) * | 2001-04-27 | 2005-03-01 | Sawtek, Inc. | Longitudinally coupled leaky surface acoustic wave resonator filter |
US6798318B1 (en) | 2001-04-27 | 2004-09-28 | Sawtek, Inc. | Hybrid leaky surface acoustic wave resonator filter |
US6534896B2 (en) * | 2001-05-15 | 2003-03-18 | Nortel Networks Limited | Spatial harmonic transducers for surface wave devices |
JP3564114B2 (ja) * | 2001-07-11 | 2004-09-08 | 松下電器産業株式会社 | 弾性表面波フィルタ、及びそれを用いた通信機器 |
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 |
JP3945363B2 (ja) * | 2001-10-12 | 2007-07-18 | 株式会社村田製作所 | 弾性表面波装置 |
EP1303041B1 (de) * | 2001-10-16 | 2009-03-18 | Panasonic Corporation | Interdigitalwandler, akustisches Oberflächenwellenfilter und Funkkommunikationsvorrichtung |
WO2003079409A2 (en) | 2002-03-15 | 2003-09-25 | United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Electro-active device using radial electric field piezo-diaphragm for control of fluid movement |
AU2003218120A1 (en) * | 2002-03-15 | 2003-09-29 | United States Of America As Represented By The Administrator Of The National Aeronautics And Space | Electro-active device using radial electric field piezo-diaphragm for sonic applications |
US7038358B2 (en) * | 2002-03-15 | 2006-05-02 | The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration | Electro-active transducer using radial electric field to produce/sense out-of-plane transducer motion |
CN102204091B (zh) * | 2008-11-18 | 2014-04-02 | 株式会社村田制作所 | 可调滤波器 |
JP6421748B2 (ja) * | 2015-12-25 | 2018-11-14 | 株式会社村田製作所 | 弾性波装置 |
US10320363B2 (en) * | 2016-08-05 | 2019-06-11 | Murata Manufacturing Co., Ltd. | High-frequency module |
WO2019123810A1 (ja) * | 2017-12-19 | 2019-06-27 | 株式会社村田製作所 | 弾性波装置 |
CN113054943B (zh) * | 2021-03-29 | 2023-07-07 | 北京航天微电科技有限公司 | 提高阻带抑制的方法、系统、声表面波滤波器和电子设备 |
CN114614791B (zh) * | 2022-05-12 | 2022-08-23 | 深圳新声半导体有限公司 | 级联谐振器和声表面波滤波器 |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US33957A (en) * | 1861-12-17 | Improved mode of operating giffard s injector | ||
JPS5330848A (en) * | 1976-09-03 | 1978-03-23 | Murata Manufacturing Co | Surface acoustic wave device |
US4223284A (en) * | 1977-11-07 | 1980-09-16 | Murata Manufacturing Co., Ltd. | Acoustic surface wave device |
JPS55107319A (en) * | 1979-02-09 | 1980-08-18 | Murata Mfg Co Ltd | Surface acoustic wave filter |
JPS5622164A (en) | 1979-07-31 | 1981-03-02 | Fujitsu Ltd | Cash register |
JPS59131213A (ja) * | 1982-07-26 | 1984-07-28 | Toyo Commun Equip Co Ltd | 高周波狭帯域多重モ−ド・フイルタ |
USRE33957E (en) | 1982-07-26 | 1992-06-09 | Toyo Communication Equipment Co., Ltd. | High frequency narrow-band multi-mode filter |
GB2149253A (en) * | 1983-10-31 | 1985-06-05 | Philips Electronic Associated | Surface acoustic wave device |
WO1986001655A1 (en) * | 1984-09-03 | 1986-03-13 | Epprecht, Georg | Converter for surface-acoustic waves (saw) |
JPH0652853B2 (ja) | 1985-12-17 | 1994-07-06 | 東洋通信機株式会社 | 反射器型高周波狭帯域多重モ−ド・フイルタの電極構造 |
JPH0421367A (ja) * | 1989-02-14 | 1992-01-24 | Ricoh Co Ltd | アクチュエータ |
US5363074A (en) * | 1992-10-19 | 1994-11-08 | Motorola, Inc. | Saw structure having serially coupled transducers with overlapping fingers |
US5363073A (en) * | 1992-10-19 | 1994-11-08 | Motorola, Inc. | Saw resonator filter with a multistrip coupler disposed in the resonator gaps |
JP3476151B2 (ja) * | 1992-12-10 | 2003-12-10 | 東洋通信機株式会社 | 縦型3重モードsawフィルタ |
EP0648015B1 (de) * | 1993-10-08 | 2000-05-31 | Matsushita Electric Industrial Co., Ltd. | Akustisches Oberflächenwellenfilter |
JP3532624B2 (ja) | 1993-10-08 | 2004-05-31 | 松下電器産業株式会社 | 弾性表面波フィルタ |
US5365138A (en) * | 1993-12-02 | 1994-11-15 | Northern Telecom Limited | Double mode surface wave resonators |
JPH07321599A (ja) * | 1994-01-31 | 1995-12-08 | Siemens Matsushita Components Gmbh & Co Kg | 横モード結合されたofw共振器フィルタ |
DE4439489C1 (de) * | 1994-10-26 | 1996-01-18 | Tele Filter Tft Gmbh | Akustisches Oberflächenwellenbauelement und Verfahren zur Herstellung |
US5955933A (en) * | 1994-11-10 | 1999-09-21 | Fujitsu Limited | Saw resonator with improved connections |
EP0746095B1 (de) * | 1995-05-29 | 2007-02-14 | SANYO ELECTRIC Co., Ltd. | Akustischer Oberflächenwellenfilter |
FR2739232B1 (fr) * | 1995-09-26 | 1997-10-24 | Thomson Csf | Filtre a ondes acoustiques de surface utilisant le couplage de trois voies acoustiques |
US5793266A (en) * | 1996-08-12 | 1998-08-11 | Motorola Inc. | Differential input and/or differential output, transversely-coupled surface acoustic wave filter |
FR2762458B1 (fr) * | 1997-04-18 | 1999-07-09 | Thomson Csf | Dispositif a ondes acoustiques de surface a couplage par proximite a entrees/sorties differentielles |
-
1997
- 1997-05-22 EP EP97108314A patent/EP0809357B1/de not_active Expired - Lifetime
- 1997-05-22 DE DE69737555T patent/DE69737555T2/de not_active Expired - Lifetime
- 1997-05-22 EP EP99103711A patent/EP0921636B1/de not_active Expired - Lifetime
- 1997-05-22 DE DE69700938T patent/DE69700938T2/de not_active Expired - Lifetime
- 1997-05-23 US US08/862,383 patent/US5990762A/en not_active Expired - Lifetime
- 1997-05-23 CN CN97114902.XA patent/CN1118932C/zh not_active Expired - Lifetime
-
1999
- 1999-09-07 US US09/390,653 patent/US6351196B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US6351196B1 (en) | 2002-02-26 |
CN1118932C (zh) | 2003-08-20 |
EP0809357A3 (de) | 1998-08-05 |
US5990762A (en) | 1999-11-23 |
DE69700938T2 (de) | 2000-05-04 |
DE69737555T2 (de) | 2007-08-09 |
EP0921636A3 (de) | 2000-05-17 |
CN1177236A (zh) | 1998-03-25 |
EP0809357A2 (de) | 1997-11-26 |
DE69737555D1 (de) | 2007-05-16 |
EP0921636A2 (de) | 1999-06-09 |
US20020014934A1 (en) | 2002-02-07 |
EP0921636B1 (de) | 2007-04-04 |
EP0809357B1 (de) | 1999-12-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8327 | Change in the person/name/address of the patent owner |
Owner name: PANASONIC CORP., KADOMA, OSAKA, JP |