DE19928596A1 - Quermodenunterdrückung in akustischen Halbleitervollmaterial-Resonator(SBAR)-Vorrichtungen unter Verwendung von sich verjüngenden Elektroden und von Elektrodenranddämpfungsmaterialien - Google Patents
Quermodenunterdrückung in akustischen Halbleitervollmaterial-Resonator(SBAR)-Vorrichtungen unter Verwendung von sich verjüngenden Elektroden und von ElektrodenranddämpfungsmaterialienInfo
- Publication number
- DE19928596A1 DE19928596A1 DE19928596A DE19928596A DE19928596A1 DE 19928596 A1 DE19928596 A1 DE 19928596A1 DE 19928596 A DE19928596 A DE 19928596A DE 19928596 A DE19928596 A DE 19928596A DE 19928596 A1 DE19928596 A1 DE 19928596A1
- Authority
- DE
- Germany
- Prior art keywords
- sbar
- electrodes
- acoustic
- layer
- piezoelectric
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/02—Details
- H03H9/02007—Details of bulk acoustic wave devices
- H03H9/02086—Means for compensation or elimination of undesirable effects
- H03H9/02118—Means for compensation or elimination of undesirable effects of lateral leakage between adjacent resonators
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
- H03H9/02—Details
- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/13—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials
- H03H9/132—Driving means, e.g. electrodes, coils for networks consisting of piezoelectric or electrostrictive materials characterized by a particular shape
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/42—Piezoelectric device making
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
Abstract
Description
Claims (12)
einem Substrat (22);
einer Schicht (24) piezoelektrischen Materials, die auf dem Substrat (22) ausgebildet ist;
einem Paar Elektroden (26, 28), wobei die piezoelektri sche Schicht (24) zwischen den beiden Elektroden (26, 28) ange ordnet ist; und
einer Einrichtung zum Unterdrücken von Quermodenresonan zen des SBARs.
einer Schicht (24) piezoelektrischen Materials;
einem Paar Elektroden (26, 28),
wobei die piezoelektrische Schicht zwischen den beiden Elektroden (26, 28) angeordnet ist,
wobei die Elektroden (26, 28) zwei Paare (38, 40; 42, 44) von jeweils gegenüberliegenden Seiten haben,
wobei mindestens ein Paar (38, 40; 42, 44) gegenüberliegender Seiten nicht-parallel ausgebildet ist, um akustische Querwellenmoden zu unterdrücken.
- (a) Aufbringen einer Schicht (24) piezoelektrischen Materi als;
- (b) Auswählen einer Elektrodenanordnung, indem die Querab messungen der Elektroden (26, 28) geändert werden, bis die aku stische Querresonanzmode unterdrückt wird;
- (c) Bilden der Elektroden (26, 28) in der ausgewählten An
ordnung;
und - (d) Anordnen des piezoelektrischen Materials zwischen den Elektroden (26, 28).
- (a) Aufbringen einer Schicht (24) piezoelektrischen Materi als auf einem Substrat (22);
- (b) Bilden von Elektroden (26, 28) derart, daß die piezo elektrische Schicht zwischen den Elektroden (26, 28) angeordnet ist; und
- (c) Aufbringen eines akustischen Dämpfungsmaterials zumin dest an einem Teil des Rands der Elektroden (26, 28).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/106,729 US6150703A (en) | 1998-06-29 | 1998-06-29 | Lateral mode suppression in semiconductor bulk acoustic resonator (SBAR) devices using tapered electrodes, and electrodes edge damping materials |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19928596A1 true DE19928596A1 (de) | 2000-01-05 |
DE19928596C2 DE19928596C2 (de) | 2001-11-15 |
Family
ID=22312946
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19928596A Expired - Lifetime DE19928596C2 (de) | 1998-06-29 | 1999-06-22 | Quermodenunterdrückung in akustischen Halbleitervollmaterial-Resonator(SBAR)-Vorrichtungen unter Verwendung von sich verjüngenden Elektroden und von Elektrodenranddämpfungsmaterialien |
Country Status (5)
Country | Link |
---|---|
US (2) | US6150703A (de) |
JP (1) | JP3136141B2 (de) |
KR (1) | KR100333512B1 (de) |
DE (1) | DE19928596C2 (de) |
TW (1) | TW463459B (de) |
Cited By (3)
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EP1041717A2 (de) * | 1999-03-30 | 2000-10-04 | Agilent Technologies Inc | Resonator mit akustischen Volumenwellen mit verbesserter lateralen Modeunterdrückung |
WO2002039782A2 (en) * | 2000-10-19 | 2002-05-16 | Sensant Corporation | Microfabricated acoustic transducer with suppressed substrate modes |
EP1217734A2 (de) * | 2000-12-21 | 2002-06-26 | Agilent Technologies, Inc. (a Delaware corporation) | Akustischer Volumenwellenresonator mit einem Perimeter-Reflexionssystem |
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US3624431A (en) * | 1968-07-12 | 1971-11-30 | Taiyo Yuden Kk | Composite circuit member including an electrostrictive element and condenser |
US3633134A (en) * | 1969-10-10 | 1972-01-04 | Motorola Inc | Crystal band pass filter circuit |
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EP0425716B1 (de) * | 1989-10-30 | 1994-01-19 | Siemens Aktiengesellschaft | Ultraschall-Schichtwandler mit astigmatischer Schallkeule |
CH683050A5 (fr) * | 1991-06-04 | 1993-12-31 | Suisse Electronique Microtech | Résonateur à quartz vibrant selon un mode fondamental de torsion. |
JPH06164293A (ja) * | 1992-02-12 | 1994-06-10 | Kokusai Electric Co Ltd | 弾性表面波共振子 |
JPH0629774A (ja) * | 1992-07-07 | 1994-02-04 | Tdk Corp | 圧電セラミックフィルタ回路及び圧電セラミックフィルタ |
US5382930A (en) * | 1992-12-21 | 1995-01-17 | Trw Inc. | Monolithic multipole filters made of thin film stacked crystal filters |
JPH07336189A (ja) * | 1994-06-09 | 1995-12-22 | Murata Mfg Co Ltd | 圧電フィルタ |
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JPH08335847A (ja) * | 1995-06-08 | 1996-12-17 | Murata Mfg Co Ltd | 厚みすべり振動型2重モードフィルタ |
TW438155U (en) * | 1995-07-27 | 2001-05-28 | Daishinku Corp | Multi-mode piezoelectric filter |
-
1998
- 1998-06-29 US US09/106,729 patent/US6150703A/en not_active Expired - Lifetime
-
1999
- 1999-05-18 TW TW088108136A patent/TW463459B/zh not_active IP Right Cessation
- 1999-05-28 KR KR1019990019393A patent/KR100333512B1/ko not_active IP Right Cessation
- 1999-06-22 DE DE19928596A patent/DE19928596C2/de not_active Expired - Lifetime
- 1999-06-25 JP JP11180160A patent/JP3136141B2/ja not_active Expired - Fee Related
- 1999-09-28 US US09/407,199 patent/US6381820B1/en not_active Expired - Lifetime
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1041717A2 (de) * | 1999-03-30 | 2000-10-04 | Agilent Technologies Inc | Resonator mit akustischen Volumenwellen mit verbesserter lateralen Modeunterdrückung |
EP1041717A3 (de) * | 1999-03-30 | 2000-12-20 | Agilent Technologies Inc | Resonator mit akustischen Volumenwellen mit verbesserter lateralen Modeunterdrückung |
WO2002039782A2 (en) * | 2000-10-19 | 2002-05-16 | Sensant Corporation | Microfabricated acoustic transducer with suppressed substrate modes |
WO2002039782A3 (en) * | 2000-10-19 | 2003-02-27 | Sensant Corp | Microfabricated acoustic transducer with suppressed substrate modes |
US6714484B2 (en) | 2000-10-19 | 2004-03-30 | Sensant Corporation | Microfabricated acoustic transducer with suppressed substrate modes |
US6862254B2 (en) | 2000-10-19 | 2005-03-01 | Sensant Corporation | Microfabricated ultrasonic transducer with suppressed substrate modes |
EP1217734A2 (de) * | 2000-12-21 | 2002-06-26 | Agilent Technologies, Inc. (a Delaware corporation) | Akustischer Volumenwellenresonator mit einem Perimeter-Reflexionssystem |
EP1217734A3 (de) * | 2000-12-21 | 2008-08-27 | Avago Technologies Wireless IP (Singapore) Pte. Ltd. | Akustischer Volumenwellenresonator mit einem Perimeter-Reflexionssystem |
Also Published As
Publication number | Publication date |
---|---|
JP3136141B2 (ja) | 2001-02-19 |
US6381820B1 (en) | 2002-05-07 |
DE19928596C2 (de) | 2001-11-15 |
KR20000005728A (ko) | 2000-01-25 |
KR100333512B1 (ko) | 2002-04-24 |
US6150703A (en) | 2000-11-21 |
TW463459B (en) | 2001-11-11 |
JP2000031552A (ja) | 2000-01-28 |
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